PSD813F1A-90M

PSD813F1A Flash in-system programmable (ISP) peripherals for 8-bit MCUs, 5 V NOT FOR NEW DESIGN FEATURES SUMMARY ■ ■ ■ ■ ■ ■ ■ DUAL BANK FLASH MEMORIES – 1 Mbit of Primary Flash Memory (8 Uniform Sectors) – 256 Kbit Secondary EEPROM (4 Uniform Sectors) – Concurrent operation: read from one memory while erasing and writing the other 16 Kbit SRAM PLD WITH MACROCELLS – Over 3,000 Gates Of PLD: DPLD and CPLD – DPLD - User-defined Internal chip-select decoding – CPLD with 16 Output Macrocells (OMCs) and 24 Input Macrocells (IMCs) 27 RECONFIGURABLE I/Os – 27 individually configurable I/O port pins that can be used for the following functions (16 I/O ports configurable as open-drain outputs): MCU I/Os PLD I/Os Latched MCU address output; and Special function I/Os ENHANCED JTAG SERIAL PORT – Built-in JTAG-compliant serial port allows full-chip In-System Programmability (ISP) – Efficient manufacturing allows for easy product testing and programming PAGE REGISTER – Internal page register that can be used to expand the microcontroller address space by a factor of 256. PROGRAMMABLE POWER MANAGEMENT Figure 1. Packages PQFP52 (M) PLCC52 (J) TQFQ64 (U) ■ ■ ■ ■ October 2008 HIGH ENDURANCE: – 100,000 Erase/WRITE Cycles of Flash Memory – 10,000 Erase/WRITE Cycles of EEPROM – 1,000 Erase/WRITE Cycles of PLD – Data Retention: 15-year minimum at 90°C (for Main Flash, Boot, PLD and Configuration bits). SINGLE SUPPLY VOLTAGE: – 5V±10% for 5V STANDBY CURRENT AS LOW AS 50µA Packages are ECOPACK® Rev 5 This is information on a product still in production but not recommended for new designs. 1/111 PSD813F1A TABLE OF CONTENTS Features Summary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 SUMMARY DESCRIPTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 In-System Programming (ISP) via JTAG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 First time programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Inventory build-up of pre-programmed devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Expensive sockets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 In-Application Programming (IAP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Simultaneous read and write to Flash memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Complex memory mapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Separate program and data space . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 PSDsoft Express . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 PIN DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 PSD ARCHITECTURAL OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 PLDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 I/O Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Microcontroller Bus Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 JTAG Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 In-System Programming (ISP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Page Register. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Power Management Unit (PMU) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 DEVELOPMENT SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 PSD Register Description and Address Offset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 DETAILED OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 MEMORY BLOCKS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Primary Flash Memory and Secondary EEPROM Description . . . . . . . . . . . . . . . . . . . . . . . . . 18 Memory Block Select Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Ready/Busy Pin (PC3). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Memory Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Power-down Instruction and Power-up Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 EEPROM Power Down Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Power-up Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 READ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Read Memory Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Read Main Flash Memory Identifier. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Read Main Flash Memory Sector Protection Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 2/111 PSD813F1A Reading the OTP Row. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Reading the Erase/Program Status Bits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Data Polling Flag (DQ7). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Toggle Flag (DQ6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Error Flag (DQ5). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Erase Time-out Flag DQ3 (Flash Memory only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Writing to the EEPROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Writing a Byte to EEPROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Writing a Page to EEPROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 EEPROM Software Data Protect (SDP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Writing the OTP Row . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 PROGRAMMING FLASH MEMORY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Data Polling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Data Toggle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 ERASING FLASH MEMORY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Flash Bulk Erase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Flash Sector Erase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Flash Erase Suspend . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Flash Erase Resume . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 FLASH AND EEPROM MEMORY SPECIFIC FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Flash Memory and EEPROM Sector Protect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Reset. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 SRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 MEMORY SELECT SIGNALS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Memory Select Configuration for MCUs with Separate Program and Data Spaces . . . . . . . . 31 Separate Space Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Combined Space Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 PAGE REGISTER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 PLD’S . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 The Turbo Bit in PSD. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 DECODE PLD (DPLD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 COMPLEX PLD (CPLD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Output Macrocell (OMC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Product Term Allocator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Loading and Reading the Output Macrocells (OMC). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 The OMC Mask Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 3/111 PSD813F1A The Output Enable of the OMC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Input Macrocells (IMC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 MCU BUS INTERFACE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 PSD Interface to a Multiplexed 8-Bit Bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 PSD Interface to a Non-Multiplexed 8-Bit Bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 Data Byte Enable Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 MCU Bus Interface Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 80C31 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 80C251 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 80C51XA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 68HC11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 I/O PORTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 General Port Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 Port Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 MCU I/O Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 PLD I/O Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 Address Out Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 Address In Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 Data Port Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 Peripheral I/O Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 JTAG In-System Programming (ISP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 Port Configuration Registers (PCR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 Control Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 Direction Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 Drive Select Register. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 Port Data Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 Data In. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 Data Out Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 Output Macrocells (OMC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 Mask Macrocell Register. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 Input Macrocells (IMC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 Enable Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 Ports A and B – Functionality and Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 Port C – Functionality and Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 Port D – Functionality and Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62 External Chip Select . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 POWER MANAGEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 Automatic Power-down (APD) Unit and Power-down Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 Power-down Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 For Users of the HC11 (or compatible) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 Other Power Saving Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 PLD Power Management. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 PSD Chip Select Input (CSI, PD2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 4/111 PSD813F1A Input Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 Input Control Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 RESET TIMING AND DEVICE STATUS AT RESET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 Power-On Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 Warm Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 I/O Pin, Register and PLD Status at Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 PROGRAMMING IN-CIRCUIT USING THE JTAG SERIAL INTERFACE . . . . . . . . . . . . . . . . . . . . . . 71 Standard JTAG Signals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71 JTAG Extensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 Security, Flash memory and EEPROM Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 INITIAL DELIVERY STATE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 AC/DC PARAMETERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 MAXIMUM RATING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76 DC AND AC PARAMETERS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77 PACKAGE MECHANICAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 PART NUMBERING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105 REVISION HISTORY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110 5/111 PSD813F1A SUMMARY DESCRIPTION The PSD family of Programmable Microcontroller (MCU) Peripherals brings In-System Programmability (ISP) to Flash memory and programmable logic. The result is a simple and flexible solution for embedded designs. PSD devices combine many of the peripheral functions found in MCU based applications. PSD devices integrate an optimized “microcontroller macrocell” logic architecture. The Macrocell was created to address the unique requirements of embedded system designs. It allows direct connection between the system address/data bus and the internal PSD registers to simplify communication between the MCU and other supporting devices. The PSD family offers two methods to program PSD Flash memory while the PSD is soldered to a circuit board. In-System Programming (ISP) via JTAG An IEEE 1149.1 compliant JTAG interface is included on the PSD enabling the entire device (Flash memory, EEPROM, the PLD, and all configuration) to be rapidly programmed while soldered to the circuit board. This requires no MCU participation, which means the PSD can be programmed anytime, even while completely blank. The innovative JTAG interface to Flash memories is an industry first, solving key problems faced by designers and manufacturing houses, such as: First time programming. How do I get firmware into the Flash the very first time? JTAG is the answer, program the PSD while blank with no MCU involvement. Inventory build-up of pre-programmed devices. How do I maintain an accurate count of preprogrammed Flash memory and PLD devices based on customer demand? How many and what version? JTAG is the answer, build your hardware with blank PSDs soldered directly to the board and then custom program just before they are shipped to customer. No more labels on chips and no more wasted inventory. Expensive sockets. How do I eliminate the need for expensive and unreliable sockets? JTAG is the answer. Solder the PSD directly to the circuit board. Program first time and subsequent times with JTAG. No need to handle devices and bend the fragile leads. 6/111 In-Application Programming (IAP) Two independent memory arrays (Flash and EEPROM) are included so the MCU can execute code from one memory while erasing and programming the other. Robust product firmware updates in the field are possible over any communication channel (CAN, Ethernet, UART, J1850, etc.) using this unique architecture. Designers are relieved of these problems: Simultaneous read and write to Flash memory. How can the MCU program the same memory from which it is executing code? It cannot. The PSD allows the MCU to operate the two memories concurrently, reading code from one while erasing and programming the other during IAP. Complex memory mapping. I have only a 64Kbyte address space to start with. How can I map these two memories efficiently? A Programmable Decode PLD is the answer. The concurrent PSD memories can be mapped anywhere in MCU address space, segment by segment with extremely high address resolution. As an option, the secondary Flash memory can be swapped out of the system memory map when IAP is complete. A built-in page register breaks the 64K-byte address limit. Separate program and data space. How can I write to Flash or EEPROM memory while it resides in “program” space during field firmware updates, my MCU won’t allow it! The Flash PSD provides means to “reclassify” Flash or EEPROM memory as “data” space during IAP, then back to “program” space when complete. PSDsoft Express PSDsoft Express, a software development tool from ST, guides you through the design process step-by-step making it possible to complete an embedded MCU design capable of ISP/IAP in just hours. Select your MCU and PSDsoft Express takes you through the remainder of the design with point and click entry, covering PSD selection, pin definitions, programmable logic inputs and outputs, MCU memory map definition, ANSI-C code generation for your MCU, and merging your MCU firmware with the PSD design. When complete, two different device programmers are supported directly from PSDsoft Express: FlashLINK (JTAG) and PSDpro. PSD813F1A 40 CNTL0 41 RESET 42 CNTL2 43 CNTL1 44 PB7 45 PB6 46 GND 47 PB5 48 PB4 49 PB3 50 PB2 51 PB1 52 PB0 Figure 2. PQFP52 Connections 28 AD5 PC0 13 27 AD4 AD3 26 29 AD6 PC1 12 AD2 25 30 AD7 PC2 11 AD1 24 31 VCC PC3 10 AD0 23 32 AD8 GND 9 PA0 22 33 AD9 VCC 8 PA1 21 34 AD10 PC4 7 PA2 20 35 AD11 PC5 6 GND 19 36 AD12 PC6 5 PA3 18 37 AD13 PC7 4 PA4 17 PD0 3 PA5 16 38 AD14 PA6 15 39 AD15 PD1 2 PA7 14 PD2 1 AI02858 7/111 PSD813F1A PB7 CNTL1 CNTL2 RESET CNTL0 PB5 PB6 PB4 GND PB3 47 PB2 48 PB1 49 2 50 3 51 4 52 5 1 PD1 6 8 7 8/111 PD2 PB0 Figure 3. PLCC52 Connections VCC 17 37 AD7 PC2 18 36 AD6 PC1 19 35 AD5 PC0 20 34 AD4 32 38 PC3 33 GND AD2 AD8 AD3 39 16 31 VCC AD1 AD9 30 40 15 AD0 14 29 PC4 PA0 AD10 28 41 PA1 13 PA2 PC5 27 AD11 26 42 GND AD12 12 25 43 PC6 PA3 PC7 24 AD13 PA4 44 11 PA5 PD0 23 AD14 22 45 10 PA6 9 21 AD15 PA7 46 AI02857 PSD813F1A 49 NC 50 RESET 51 CNTL2 52 CNTL1 53 PB7 54 PB6 55 GND 56 GND 57 PB5 58 PB4 59 PB3 60 PB2 61 PB1 62 PB0 63 NC 64 NC Figure 4. TQFP64 Connections 34 AD4 16 33 AD3 AD2 32 35 AD5 15 NC ND 31 36 AD6 PC0 14 AD1 30 37 AD7 PC1 13 AD0 29 38 VCC PC2 12 PA0 28 39 VCC PC3 11 PA1 27 GND 10 PA2 26 40 AD8 GND 25 41 AD9 GND 9 GND 24 42 AD10 VCC 8 PA3 23 43 AD11 PC4 7 PA4 22 44 AD12 PC5 6 PA5 21 45 AD13 PC6 5 PA6 20 46 AD14 PC7 4 PA7 19 47 AD15 PD0 3 NC 18 48 CNTL0 PD1 2 NC 17 PD2 1 AI09644 9/111 PSD813F1A PIN DESCRIPTION Table 1. Pin Description (for the PLCC52 package) Pin Name ADIO0-7 ADIO8-15 CNTL0 Pin 30-37 39-46 47 Type Description(1) I/O This is the lower Address/Data port. Connect your MCU address or address/data bus according to the following rules: 1. If your MCU has a multiplexed address/data bus where the data is multiplexed with the lower address bits, connect AD0-AD7 to this port. 2. If your MCU does not have a multiplexed address/data bus, or you are using an 80C251 in page mode, connect A0-A7 to this port. 3. If you are using an 80C51XA in burst mode, connect A4/D0 through A11/D7 to this port. ALE or AS latches the address. The PSD drives data out only if the READ signal is active and one of the PSD functional blocks was selected. The addresses on this port are passed to the PLDs. I/O This is the upper Address/Data port. Connect your MCU address or address/data bus according to the following rules: 1. If your MCU has a multiplexed address/data bus where the data is multiplexed with the lower address bits, connect A8-A15 to this port. 2. If your MCU does not have a multiplexed address/data bus, connect A8-A15 to this port. 3. If you are using an 80C251 in page mode, connect AD8-AD15 to this port. 4. If you are using an 80C51XA in burst mode, connect A12/D8 through A19/D15 to this port. ALE or AS latches the address. The PSD drives data out only if the READ signal is active and one of the PSD functional blocks was selected. The addresses on this port are passed to the PLDs. I The following control signals can be connected to this port, based on your MCU: 1. WR – active Low Write Strobe input. 2. R_W – active High READ/active Low write input. This port is connected to the PLDs. Therefore, these signals can be used in decode and other logic equations. CNTL1 50 I The following control signals can be connected to this port, based on your MCU: 1. RD – active Low Read Strobe input. 2. E – E clock input. 3. DS – active Low Data Strobe input. 4. PSEN – connect PSEN to this port when it is being used as an active Low READ signal. For example, when the 80C251 outputs more than 16 address bits, PSEN is actually the READ signal. This port is connected to the PLDs. Therefore, these signals can be used in decode and other logic equations. CNTL2 49 I This port can be used to input the PSEN (Program Select Enable) signal from any MCU that uses this signal for code exclusively. If your MCU does not output a Program Select Enable signal, this port can be used as a generic input. This port is connected to the PLDs. Reset 48 I Active Low Reset input. Resets I/O Ports, PLD macrocells and some of the Configuration Registers. Must be Low at Power-up. 10/111 PSD813F1A Pin Name Pin PA0 PA1 PA2 PA3 PA4 PA5 PA6 PA7 29 28 27 25 24 23 22 21 PB0 PB1 PB2 PB3 PB4 PB5 PB6 PB7 7 6 5 4 3 2 52 51 PC0 PC1 PC2 PC3 PC4 20 19 18 17 14 Type Description(1) I/O These pins make up Port A. These port pins are configurable and can have the following functions: 1. MCU I/O – write to or read from a standard output or input port. 2. CPLD macrocell (McellAB0-7) outputs. 3. Inputs to the PLDs. 4. Latched address outputs (see Table 5). 5. Address inputs. For example, PA0-3 could be used for A0-A3 when using an 80C51XA in burst mode. 6. As the data bus inputs D0-D7 for non-multiplexed address/data bus MCUs. 7. D0/A16-D3/A19 in M37702M2 mode. 8. Peripheral I/O mode. Note: PA0-PA3 can only output CMOS signals with an option for high slew rate. However, PA4-PA7 can be configured as CMOS or Open Drain Outputs. I/O These pins make up Port B. These port pins are configurable and can have the following functions: 1. MCU I/O – write to or read from a standard output or input port. 2. CPLD macrocell (McellAB0-7 or McellBC0-7) outputs. 3. Inputs to the PLDs. 4. Latched address outputs (see Table 5). Note: PB0-PB3 can only output CMOS signals with an option for high slew rate. However, PB4-PB7 can be configured as CMOS or Open Drain Outputs. I/O PC0 pin of Port C. This port pin can be configured to have the following functions: 1. MCU I/O – write to or read from a standard output or input port. 2. CPLD macrocell (McellBC0) output. 3. Input to the PLDs. 4. TMS Input2 for the JTAG Interface. This pin can be configured as a CMOS or Open Drain output. I/O PC1 pin of Port C. This port pin can be configured to have the following functions: 1. MCU I/O – write to or read from a standard output or input port. 2. CPLD macrocell (McellBC1) output. 3. Input to the PLDs. 4. TCK Input2 for the JTAG Interface. This pin can be configured as a CMOS or Open Drain output. I/O PC2 pin of Port C. This port pin can be configured to have the following functions: 1. MCU I/O – write to or read from a standard output or input port. 2. CPLD macrocell (McellBC2) output. 3. Input to the PLDs. This pin can be configured as a CMOS or Open Drain output. I/O PC3 pin of Port C. This port pin can be configured to have the following functions: 1. MCU I/O – write to or read from a standard output or input port. 2. CPLD macrocell (McellBC3) output. 3. Input to the PLDs. 4. TSTAT output2 for the JTAG Serial Interface. 5. Ready/Busy output for In-System parallel programming. This pin can be configured as a CMOS or Open Drain output. I/O PC4 pin of Port C. This port pin can be configured to have the following functions: 1. MCU I/O – write to or read from a standard output or input port. 2. CPLD macrocell (McellBC4) output. 3. Input to the PLDs. 4. TERR output2 for the JTAG Interface. This pin can be configured as a CMOS or Open Drain output. 11/111 PSD813F1A Pin Name PC5 PC6 PC7 PD0 PD1 Pin 13 12 11 10 9 Description(1) Type I/O PC5 pin of Port C. This port pin can be configured to have the following functions: 1. MCU I/O – write to or read from a standard output or input port. 2. CPLD macrocell (McellBC5) output. 3. Input to the PLDs. 4. TDI input2 for the JTAG Interface. This pin can be configured as a CMOS or Open Drain output. I/O PC6 pin of Port C. This port pin can be configured to have the following functions: 1. MCU I/O – write to or read from a standard output or input port. 2. CPLD macrocell (McellBC6) output. 3. Input to the PLDs. 4. TDO output2 for the JTAG Interface. This pin can be configured as a CMOS or Open Drain output. I/O PC7 pin of Port C. This port pin can be configured to have the following functions: 1. MCU I/O – write to or read from a standard output or input port. 2. CPLD macrocell (McellBC7) output. 3. Input to the PLDs. 4. DBE – active Low Data Byte Enable input from 68HC912 type MCUs. This pin can be configured as a CMOS or Open Drain output. I/O PD0 pin of Port D. This port pin can be configured to have the following functions: 1. ALE/AS input latches address output from the MCU. 2. MCU I/O – write or read from a standard output or input port. 3. Input to the PLDs. 4. CPLD output (External Chip Select). I/O PD1 pin of Port D. This port pin can be configured to have the following functions: 1. MCU I/O – write to or read from a standard output or input port. 2. Input to the PLDs. 3. CPLD output (External Chip Select). 4. CLKIN – clock input to the CPLD macrocells, the APD Unit’s Power-down counter, and the CPLD AND Array. I/O PD2 pin of Port D. This port pin can be configured to have the following functions: 1. MCU I/O – write to or read from a standard output or input port. 2. Input to the PLDs. 3. CPLD output (External Chip Select). 4. PSD Chip Select Input (CSI). When Low, the MCU can access the PSD memory and I/ O. When High, the PSD memory blocks are disabled to conserve power. PD2 8 VCC 15, 38 Supply Voltage GND 1, 16, 26 Ground pins Note: 1. The pin numbers in this table are for the PLCC package only. See the Figure 2., page 7, for pin numbers on other package type. 2. These functions can be multiplexed with other functions. 12/111 AD0 – AD15 CNTL0, CNTL1, CNTL2 CLKIN GLOBAL CONFIG. & SECURITY ADIO PORT PROG. MCU BUS INTRF. PLD INPUT BUS CLKIN 73 CSIOP CLKIN 16 KBIT SRAM 4 SECTORS EEPROM - F1 256 KBIT SECONDARY MEMORY (BOOT OR DATA) 3 EXT CS TO PORT D JTAG SERIAL CHANNEL PORT A ,B & C 24 INPUT MACROCELLS PORT A ,B & C 16 OUTPUT MACROCELLS PLD, CONFIGURATION & FLASH MEMORY LOADER 8 SECTORS 1 MBIT MAIN FLASH MEMORY RUNTIME CONTROL AND I/O REGISTERS PERIP I/O MODE SELECTS SRAM SELECT SECTOR SELECTS FLASH ISP CPLD (CPLD) FLASH DECODE PLD (DPLD) SECTOR SELECTS EMBEDDED ALGORITHM MACROCELL FEEDBACK OR PORT INPUT 73 PAGE REGISTER ADDRESS/DATA/CONTROL BUS PORT D PROG. PORT PORT C PROG. PORT PORT B PROG. PORT PORT A PROG. PORT POWER MANGMT UNIT PD0 – PD2 PC0 – PC7 PB0 – PB7 PA0 – PA7 VSTDBY (PC2) PSD813F1A Figure 5. Block Diagram AI02861G 13/111 PSD813F1A PSD ARCHITECTURAL OVERVIEW PSD devices contain several major functional blocks. Figure 5 shows the architecture of the PSD device. The functions of each block are described briefly in the following sections. Many of the blocks perform multiple functions and are user configurable. Memory The PSD contains the following memories: ■ a 1 Mbit Flash memory ■ a secondary 256 Kbit EEPROM memory ■ a 16 Kbit SRAM Each of the memory blocks is briefly discussed in the following paragraphs. A more detailed discussion can be found in the section entitled MEMORY BLOCKS, page 18. The 1 Mbit Flash memory is the main memory of the PSD. It is divided into 8 equally-sized sectors that are individually selectable. The 256 Kbit EEPROM or Flash memory is divided into 4 equally-sized sectors. Each sector is individually selectable. The 16 Kbit SRAM is intended for use as a scratchpad memory or as an extension to the microcontroller SRAM. Each sector of memory can be located in a different address space as defined by the user. The access times for all memory types includes the address latching and DPLD decoding time. PLDs The device contains two PLD blocks, each optimized for a different function, as shown in Table 2. The functional partitioning of the PLDs reduces power consumption, optimizes cost/performance, and eases design entry. The Decode PLD (DPLD) is used to decode addresses and generate chip selects for the PSD internal memory and registers. The CPLD can implement user-defined logic functions. The DPLD has combinatorial outputs. The CPLD has 16 Output macrocells and 3 combinatorial outputs. The PSD also has 24 Input macrocells that can be configured as inputs to the PLDs. The PLDs receive their inputs from the PLD Input Bus and are differentiated by their output destinations, number of Product Terms, and macrocells. 14/111 The PLDs consume minimal power by using ZeroPower design techniques. The speed and power consumption of the PLD is controlled by the Turbo Bit (ZPSD only) in the PMMR0 register and other bits in the PMMR2 registers. These registers are set by the microcontroller at runtime. There is a slight penalty to PLD propagation time when invoking the ZPSD features. I/O Ports The PSD has 27 I/O pins divided among four ports (Port A, B, C, and D). Each I/O pin can be individually configured for different functions. Ports A, B, C and D can be configured as standard MCU I/O ports, PLD I/O, or latched address outputs for microcontrollers using multiplexed address/data busses. The JTAG pins can be enabled on Port C for InSystem Programming (ISP). Ports A and B can also be configured as a data port for a n on-multiplexed bus or multiplexed Address/Data buses for certain types of 16-bit microcontrollers. Microcontroller Bus Interface The PSD easily interfaces with most 8-bit microcontrollers that have either multiplexed or nonmultiplexed address/data busses. The device is configured to respond to the microcontroller’s control signals, which are also used as inputs to the PLDs. Where there is a requirement to use a 16bit data bus to interface to a 16-bit microcontroller, two PSDs must be used. For examples, please see the section entitled MCU Bus Interface Examples, page 47. Table 2. PLD I/O Inputs Outputs Product Terms Decode PLD (DPLD) 73 17 42 Complex PLD (CPLD) 73 19 140 Name PSD813F1A JTAG Port In-System Programming can be performed through the JTAG pins on Port C. This serial interface allows complete programming of the entire PSD device. A blank device can be completely programmed. The JTAG signals (TMS, TCK, TSTAT, TERR, TDI, TDO) can be multiplexed with other functions on Port C. Table 3 indicates the JTAG signals pin assignments. In-System Programming (ISP) Using the JTAG signals on Port C, the entire PSD device can be programmed or erased without the use of the microcontroller. The main Flash memory can also be programmed in-system by the microcontroller executing the programming algorithms out of the EEPROM or SRAM. The EEPROM can be programmed the same way by executing out of the main Flash memory. The PLD logic or other PSD configuration can be programmed through the JTAG port or a device programmer. Table 4 indicates which programming methods can program different functional blocks of the PSD. Page Register The 8-bit Page Register expands the address range of the microcontroller by up to 256 times. The paged address can be used as part of the address space to access external memory and peripherals, or internal memory and I/O. The Page Register can also be used to change the address mapping of blocks of Flash memory into different memory spaces for in-circuit programming. Power Management Unit (PMU) The Power Management Unit (PMU) in the PSD gives the user control of the power consumption on selected functional blocks based on system requirements. The PMU includes an Automatic Power Down unit (APD) that will turn off device functions due to microcontroller inactivity. The APD unit has a Power Down Mode that helps reduce power consumption. The PSD also has some bits that are configured at run-time by the MCU to reduce power consumption of the CPLD. The turbo bit in the PMMR0 register can be turned off and the CPLD will latch its outputs and go to sleep until the next transition on its inputs. Additionally, bits in the PMMR2 register can be set by the MCU to block signals from entering the CPLD to reduce power consumption. Please see the section entitled POWER MANAGEMENT, page 64 for more details. Table 3. JTAG SIgnals on Port C Port C Pins JTAG Signal PC0 TMS PC1 TCK PC3 TSTAT PC4 TERR PC5 TDI PC6 TDO Table 4. Methods of Programming Different Functional Blocks of the PSD Functional Block In-System Parallel Programming JTAG Programming Device Programmer Main Flash Memory Yes Yes Yes EEPROM Memory Yes Yes Yes PLD Array (DPLD and CPLD) Yes Yes No PSD Configuration Yes Yes No Optional OTP Row No Yes Yes 15/111 PSD813F1A DEVELOPMENT SYSTEM The PSD is supported by PSDsoft Express a Windows-based (95, 98, NT) software development tool. A PSD design is quickly and easily produced in a point and click environment. The designer does not need to enter Hardware Definition Language (HDL) equations (unless desired) to define PSD pin functions and memory map information. The general design flow is shown in Figure 6 below. PSDsoft Express is available from our web site (www.st.com/psm) or other distribution channels. PSDsoft Express directly supports two low cost device programmers from ST, PSDpro and FlashLINK (JTAG). Both of these programmers may be purchased through your local distributor/representative, or directly from our web site using a credit card. The PSD is also supported by third party device programmers, see web site for current list. Figure 6. PSDsoft Express Development Tool Choose MCU and PSD Automatically configures MCU bus interface and other PSD attributes Define PSD Pin and Node functions C Code Generation Point and click definition of PSD pin functions, internal nodes, and MCU system memory map Generate C Code Specific to PSD Functions Define General Purpose Logic in CPLD Point and click definition of combinatorial and registered logic in CPLD. Access to HDL is available if needed MCU Firmware Hex or S-Record format User's choice of Microcontroller Compiler/Linker Merge MCU Firmware with PSD Configuration A composite object file is created containing MCU firmware and PSD configuration. *.OBJ FILE ST PSD Programmer PSDPro, or FlashLINK (JTAG) *.OBJ file available for 3rd party programmers (Conventional or JTAG-ISC) AI09215 16/111 PSD813F1A PSD REGISTER DESCRIPTION AND ADDRESS OFFSET Table 5 shows the offset addresses to the PSD registers relative to the CSIOP base address. The CSIOP space is the 256 bytes of address that is allocated by the user to the internal PSD registers. Table 6 provides brief descriptions of the registers in CSIOP space. The following section gives a more detailed description. Table 5. I/O Port Latched Address Output Assignments Port A(2) MCU(1) Port A (3:0) Port B(2) Port A (7:4) Port B (3:0) Port B (7:4) 8051XA (8-bit) N/A Address a7-a4 Address a11-a8 N/A 80C251 (page mode) N/A N/A Address a11-a8 Address a15-a12 All other 8-bit multiplexed Address a3-a0 Address a7-a4 Address a3-a0 Address a7-a4 8-bit non-multiplexed bus N/A N/A Address a3-a0 Address a7-a4 Note: 1. See the section entitled I/O PORTS, page 52, on how to enable the Latched Address Output function. 2. N/A = Not Applicable Table 6. Register Address Offset Register Name Port A Port B Port C Port D 10 11 Other(1) Description Data In 00 01 Control 02 03 Data Out 04 05 12 13 Direction 06 07 14 15 Configures Port pin as input or output 17 Configures Port pins as either CMOS or Open Drain on some pins, while selecting high slew rate on other pins. Drive Select 08 09 16 Input Macrocell 0A 0B 18 Enable Out 0C 0D 1A Output Macrocells AB 20 20 Output Macrocells BC Mask Macrocells AB Mask Macrocells BC 21 22 Reads Port pin as input, MCU I/O input mode Selects mode between MCU I/O or Address Out Stores data for output to Port pins, MCU I/O output mode Reads Input Macrocells Reads the status of the output enable to the I/O Port driver 1B READ – reads output of macrocells AB WRITE – loads macrocell flip-flops READ – reads output of macrocells BC WRITE – loads macrocell flip-flops 21 22 23 Blocks writing to the Output Macrocells AB 23 Blocks writing to the Output Macrocells BC Primary Flash Protection C0 Read only – Flash Sector Protection Secondary Flash memory Protection C2 Read only – PSD Security and EEPROM Sector Protection JTAG Enable C7 Enables JTAG Port PMMR0 B0 Power Management Register 0 PMMR2 B4 Power Management Register 2 Page E0 Page Register VM E2 Places PSD memory areas in Program and/or Data space on an individual basis. Note: 1. Other registers that are not part of the I/O ports. 17/111 PSD813F1A DETAILED OPERATION As shown in Figure 5., page 13, the PSD consists of six major types of functional blocks: ■ Memory Blocks ■ PLD Blocks ■ MCU Bus Interface ■ I/O Ports ■ Power Management Unit (PMU) ■ JTAG Interface The functions of each block are described in the following sections. Many of the blocks perform multiple functions, and are user configurable. MEMORY BLOCKS The PSD has the following memory blocks (see Table 7): – The Main Flash memory – Secondary EEPROM memory – SRAM The Memory Select signals for these blocks originate from the Decode PLD (DPLD) and are userdefined in PSDsoft Express. Primary Flash Memory and Secondary EEPROM Description The 1Mb primary Flash memory is divided evenly into eight 16-KByte sectors. The EEPROM memory is divided into four sectors of eight KBytes each. Each sector of either memory can be separately protected from Program and Erase operations. Flash memory may be erased on a sector-by-sector basis and programmed byte-by-byte. Flash sector erasure may be suspended while data is read from other sectors of memory and then resumed after reading. EEPROM may be programmed byte-by-byte or sector-by-sector, and erasing is automatic and 18/111 transparent. The integrity of the data can be secured with the help of Software Data Protection (SDP). Any write operation to the EEPROM is inhibited during the first five milliseconds following power-up. During a program or erase of Flash, or during a write of the EEPROM, the status can be output on the Ready/Busy (PC3) pin of Port C3. This pin is set up using PSDsoft Express Configuration. Memory Block Select Signals. The decode PLD in the PSD generates the chip selects for all the internal memory blocks (refer to the section entitled PLD’S, page 34). Each of the eight Flash memory sectors have a Flash Select signal (FS0FS7) which can contain up to three product terms. Each of the four EEPROM memory sectors have a Select signal (EES0-3 or CSBOOT0-3) which can contain up to three product terms. Having three product terms for each sector select signal allows a given sector to be mapped in different areas of system memory. When using a microcontroller with separate Program and Data space, these flexible select signals allow dynamic re-mapping of sectors from one space to the other. Ready/Busy Pin (PC3). Pin PC3 can be used to output the Ready/Busy status of the PSD. The output on the pin will be a ‘0’ (Busy) when Flash or EEPROM memory blocks are being written to, or when the Flash memory block is being erased. The output will be a ‘1’ (Ready) when no write or erase operation is in progress. Table 7. Memory Blocks Device Main Flash EEPROM SRAM PSD813F1A 128KB 32KB 2KB PSD813F1A Memory Operation The main Flash and EEPROM memory are addressed through the microcontroller interface on the PSD device. The microcontroller can access these memories in one of two ways: – The microcontroller can execute a typical bus WRITE or READ operation just as it would if accessing a RAM or ROM device using standard bus cycles. – The microcontroller can execute a specific instruction that consists of several WRITE and READ operations. This involves writing specific data patterns to special addresses within the Flash or EEPROM to invoke an embedded algorithm. These instructions are summarized in Table 8., page 20. Typically, Flash memory can be read by the microcontroller using READ operations, just as it would read a ROM device. However, Flash memory can only be erased and programmed with specific instructions. For example, the microcontroller cannot write a single byte directly to Flash memory as one would write a byte to RAM. To program a byte into Flash memory, the microcontroller must execute a program instruction sequence, then test the status of the programming event. This status test is achieved by a READ operation or polling the Ready/Busy pin (PC3). The Flash memory can also be read by using special instructions to retrieve particular Flash device information (sector protect status and ID). The EEPROM is a bit different. Data can be written to EEPROM memory using write operations, like writing to a RAM device, but the status of each WRITE event must be checked by the microcontroller. A WRITE event can be one to 64 contiguous bytes. The status test is very similar to that used for Flash memory (READ operation or Ready/Busy). Optionally, the EEPROM memory may be put into a Software Data Protect (SDP) mode where it requires instructions, rather than operations, to alter its contents. SDP mode makes writing to EEPROM much like writing to Flash memory. 19/111 PSD813F1A Table 8. Instructions Instruction EEPROM Flash Sector Sector Select Cycle 1 Cycle 2 Cycle 3 Select (FSi)(2) (EESi) Cycle 4 Cycle 5 Cycle 6 Read Flash Identifier3,5 0 1 AAh@ X555h 55h@ 90h@ XAAAh X555h Read Identifier with (A6,A1,A0 at 0,0,1) Read OTP row4 1 0 AAh@ X555h 55h@ 90h@ XAAAh X555h Read byte Read 1 byte 2 55h@ 90h@ XAAAh X555h Read identifier with (A6, A1; A0 = 0,1,0) Cycle 7 Read byte N Read Sector Protection Status3,5 0 1 AAh@ X555h Program a Flash Byte5 0 1 AAh@ X555h 55h@ A0h@ XAAAh X555h Data@ address Erase one Flash Sector5 0 1 AAh@ X555h 55h@ 80h@ XAAAh X555h AAh@ X555h 55h@ XAAAh 30h@ 30h@ Sector Sector address address1 Erase the Whole Flash5 0 1 AAh@ X555h 55h@ 80h@ XAAAh X555h AAh@ X555h 55h@ XAAAh 10h@ X555h Suspend Sector Erase5 0 1 B0h@ XXXXh Resume Sector Erase5 0 1 30h@ XXXXh EEPROM Power Down4 1 0 AAh@ X555h 55h@ 30h@ XAAAh X555h SDP Enable/ EEPROM Write4 1 0 AAh@ X555h 55h@ A0h@ XAAAh X555h Write byte Write 1 byte 2 SDP Disable4 1 0 AAh@ X555h 55h@ 80h@ XAAAh X555h AAh@ X555h Write in OTP Row4,6 1 0 AAh@ X555h 55h@ B0h@ XAAAh X555h Write byte Write 1 byte 2 Return (from OTP Read or EEPROM Power-Down)4 1 0 F0h@ XXXX Reset3.5 0 1 AAh@ X555h Reset (short instruction)5 0 1 F0h@ XXXX 55h@ XAAAh Write byte N 20h@ X555h Write byte N 55h@ F0h@ XAAAh XXXX Note: 1. Additional sectors to be erased must be entered within 80 µs. A Sector Address is any address within the Sector. 2. Flash and EEPROM Sector Selects are active high. Addresses A15-A12 are don’t cares in Instruction Bus Cycles. 3. The Reset instruction is required to return to the normal READ mode if DQ5 goes high or after reading the Flash Identifier or Protection status. 4. The MCU cannot invoke these instructions while executing code from EEPROM. The MCU must be operating from some other memory when these instructions are performed. 5. The MCU cannot invoke these instructions while executing code from the same Flash memory for which the instruction is intended. The MCU must operate from some other memory when these instructions are executed. 6. Writing to OTP Row is allowed only when SDP mode is disabled. 20/111 PSD813F1A INSTRUCTIONS An instruction is defined as a sequence of specific operations. Each received byte is sequentially decoded by the PSD and not executed as a standard write operation. The instruction is executed when the correct number of bytes are properly received and the time between two consecutive bytes is shorter than the time-out value. Some instructions are structured to include READ operations after the initial WRITE operations. The sequencing of any instruction must be followed exactly. Any invalid combination of instruction bytes or time-out between two consecutive bytes while addressing Flash memory will reset the device logic into READ mode (Flash memory reads like a ROM device). An invalid combination or time-out while addressing the EEPROM block will cause the offending byte to be interpreted as a single operation. The PSD supports these instructions (see Table 8., page 20): Flash memory: ■ Erase memory by chip or sector ■ Suspend or resume sector erase ■ Program a Byte ■ Reset to READ mode ■ Read Flash Identifier value ■ Read Sector Protection Status EEPROM: ■ Write data to OTP Row ■ Read data from OTP Row ■ Power down memory ■ Enable Software Data Protect (SDP) ■ Disable SDP ■ Return from read OTP Row read mode or power down mode. These instructions are detailed in Table 8., page 20. For efficient decoding of the instructions, the first two bytes of an instruction are the coded cycles and are followed by a command byte or confirmation byte. The coded cycles consist of writing the data AAh to address X555h during the first cycle and data 55h to address XAAAh during the second cycle. Address lines A15-A12 are don’t cares during the instruction WRITE cycles. However, the appropriate sector select signal (FSi or EESi) must be selected. Power-down Instruction and Power-up Mode EEPROM Power Down Instruction. The EEPROM can enter power down mode with the help of the EEPROM power down instruction (see Table 8., page 20). Once the EEPROM power down instruction is decoded, the EEPROM memory cannot be accessed unless a Return instruction (also in Table 8., page 20) is decoded. Alternately, this power down mode will automatically occur when the APD circuit is triggered (see section entitled Automatic Power-down (APD) Unit and Powerdown Mode, page 65). Therefore, this instruction is not required if the APD circuit is used. Power-up Mode. The PSD internal logic is reset upon power-up to the READ mode. Any write operation to the EEPROM is inhibited during the first 5ms following power-up. The FSi and EESi select signals, along with the write strobe signal, must be in the false state during power-up for maximum security of the data contents and to remove the possibility of a byte being written on the first edge of a write strobe signal. Any write cycle initiation is locked when VCC is below VLKO. 21/111 PSD813F1A READ Under typical conditions, the microcontroller may read the Flash or EEPROM memory using READ operations just as it would a ROM or RAM device. Alternately, the microcontroller may use READ operations to obtain status information about a Program or Erase operation in progress. Lastly, the microcontroller may use instructions to read special data from these memories. The following sections describe these READ functions. Read Memory Contents. Main Flash is placed in the READ mode after power-up, chip reset, or a Reset Flash instruction (see Table 8., page 20). The microcontroller can read the memory contents of main Flash or EEPROM by using READ operations any time the READ operation is not part of an instruction sequence. Read Main Flash Memory Identifier. The main Flash memory identifier is read with an instruction composed of 4 operations: 3 specific write operations and a READ operation (see Table 8). During the READ operation, address bits A6, A1, and A0 must be 0,0,1, respectively, and the appropriate sector select signal (FSi) must be active. The Flash ID is E3h for the PSD. The MCU can read the ID only when it is executing from the EEPROM. Read Main Flash Memory Sector Protection Status. The main Flash memory sector protection status is read with an instruction composed of 4 operations: 3 specific WRITE operations and a READ operation (see Table 8., page 20). During the READ operation, address bits A6, A1, and A0 must be 0,1,0, respectively, while the chip select FSi designates the Flash sector whose protection has to be verified. The READ operation will produce 01h if the Flash sector is protected, or 00h if the sector is not protected. The sector protection status for all NVM blocks (main Flash or EEPROM) can be read by the microcontroller accessing the Flash Protection and PSD/EE Protection registers in PSD I/O space. See Flash Memory and EEPROM Sector Protect, page 30 for register definitions. Reading the OTP Row. There are 64 bytes of One-Time-Programmable (OTP) memory that reside in EEPROM. These 64 bytes are in addition to the 32 Kbytes of EEPROM memory. A READ of the OTP row is done with an instruction composed of at least 4 operations: 3 specific WRITE operations and one to 64 READ operations (see Table 8., page 20). During the READ operation(s), address bit A6 must be zero, while address bits A5A0 define the OTP Row byte to be read while any EEPROM sector select signal (EESi) is active. After reading the last byte, an EEPROM Return instruction must be executed (see Table 8., page 20). Reading the Erase/Program Status Bits. The PSD provides several status bits to be used by the microcontroller to confirm the completion of an erase or programming instruction of Flash memory. Bits are also available to show the status of WRITES to EEPROM. These status bits minimize the time that the microcontroller spends performing these tasks and are defined in Table 9. The status bits can be read as many times as needed. For Flash memory, the microcontroller can perform a READ operation to obtain these status bits while an Erase or Program instruction is being executed by the embedded algorithm. See the section entitled PROGRAMMING FLASH MEMORY, page 27 for details. For EEPROM not in SDP mode, the microcontroller can perform a READ operation to obtain these status bits just after a data WRITE operation. The microcontroller may write one to 64 bytes before reading the status bits. See the section entitled Writing to the EEPROM, page 24 for details. For EEPROM in SDP mode, the microcontroller will perform a READ operation to obtain these status bits while an SDP write instruction is being executed by the embedded algorithm. See section entitled EEPROM Software Data Protect (SDP), page 24 for details. Table 9. Status Bit Device FSi/ CSBOOTi EESi DQ7 DQ6 DQ5 DQ4 DQ3 DQ2 DQ1 DQ0 Flash VIH VIL Data Polling Toggle Flag Error Flag X Erase Timeout X X X EEPROM VIL VIH Data Polling Toggle Flag X X X X X X Note: 1. X = not guaranteed value, can be read either 1 or 0. 2. DQ7-DQ0 represent the Data Bus Bits, D7-D0. 3. FSi and EESi are active High. 22/111 PSD813F1A Data Polling Flag (DQ7) When Erasing or Programming the Flash memory (or when Writing into the EEPROM memory), bit DQ7 outputs the complement of the bit being entered for Programming/Writing on DQ7. Once the Program instruction or the WRITE operation is completed, the true logic value is read on DQ7 (in a Read operation). Flash memory specific features: – Data Polling is effective after the fourth WRITE pulse (for programming) or after the sixth WRITE pulse (for Erase). It must be performed at the address being programmed or at an address within the Flash sector being erased. – During an Erase instruction, DQ7 outputs a ‘0.’ After completion of the instruction, DQ7 will output the last bit programmed (it is a ‘1’ after erasing). – If the byte to be programmed is in a protected Flash sector, the instruction is ignored. – If all the Flash sectors to be erased are protected, DQ7 will be set to ‘0’ for about 100µs, and then return to the previous addressed byte. No erasure will be performed. Toggle Flag (DQ6) The PSD offers another way for determining when the EEPROM write or the Flash memory Program instruction is completed. During the internal WRITE operation and when either the FSi or EESi is true, the DQ6 will toggle from ‘0’ to ‘1’ and ‘1’ to ‘0’ on subsequent attempts to read any byte of the memory. When the internal cycle is complete, the toggling will stop and the data read on the Data Bus D0-7 is the addressed memory byte. The device is now accessible for a new READ or WRITE operation. The operation is finished when two successive reads yield the same output data. Flash memory specific features: ■ The Toggle bit is effective after the fourth WRITE pulse (for programming) or after the sixth WRITE pulse (for Erase). ■ If the byte to be programmed belongs to a protected Flash sector, the instruction is ignored. ■ If all the Flash sectors selected for erasure are protected, DQ6 will toggle to ‘0’ for about 100 µs and then return to the previous addressed byte. Error Flag (DQ5) During a correct Program or Erase, the Error bit will set to ‘0.’ This bit is set to ‘1’ when there is a failure during Flash byte programming, Sector erase, or Bulk Erase. In the case of Flash programming, the Error Bit indicates the attempt to program a Flash bit(s) from the programmed state ('0') to the erased state ('1'), which is not a valid operation. The Error bit may also indicate a timeout condition while attempting to program a byte. In case of an error in Flash sector erase or byte program, the Flash sector in which the error occurred or to which the programmed byte belongs must no longer be used. Other Flash sectors may still be used. The Error bit resets after the Reset instruction. Erase Time-out Flag DQ3 (Flash Memory only) The Erase Timer bit reflects the time-out period allowed between two consecutive Sector Erase instructions. The Erase timer bit is set to ‘0’ after a Sector Erase instruction for a time period of 100µs + 20% unless an additional Sector Erase instruction is decoded. After this time period or when the additional Sector Erase instruction is decoded, DQ3 is set to ‘1.’ 23/111 PSD813F1A Writing to the EEPROM Data may be written a byte at a time to the EEPROM using simple write operations, much like writing to an SRAM. Unlike SRAM though, the completion of each byte write must be checked before the next byte is written. To speed up this process, the PSD offers a Page write feature to allow writing of several bytes before checking status. To prevent inadvertent writes to EEPROM, the PSD offers a Software Data Protect (SDP) mode. Once enabled, SDP forces the MCU to “unlock” the EEPROM before altering its contents, much like Flash memory programming. Writing a Byte to EEPROM. A write operation is initiated when an EEPROM select signal (EESi) is true and the write strobe signal (WR) into the PSD is true. If the PSD detects no additional writes within 120µsec, an internal storage operation is initiated. Internal storage to EEPROM memory technology typically takes a few milliseconds to complete. The status of the write operation is obtained by the MCU reading the Data Polling or Toggle bits (as detailed in section entitled READ, page 22), or the Ready/Busy output pin (section Ready/Busy Pin (PC3), page 18). Keep in mind that the MCU does not need to erase a location in EEPROM before writing it. Erasure is performed automatically as an internal process. Writing a Page to EEPROM. Writing data to EEPROM using page mode is more efficient than writing one byte at a time. The PSD EEPROM has a 64 byte volatile buffer that the MCU may fill before an internal EEPROM storage operation is initiated. Page mode timing approaches a 64:1 advantage over the time it takes to write individual bytes. To invoke page mode, the MCU must write to EEPROM locations within a single page, with no more than 120µs between individual byte writes. A single page means that address lines A14 to A6 must remain constant. The MCU may write to the 64 locations on a page in any order, which is determined by address lines A5 to A0. As soon as 120µs have expired after the last page write, the internal EEPROM storage process begins and the MCU checks programming status. Status is checked the same way it is for byte writes, described above. Note: Be aware that if the upper address bits (A14 to A6) change during page write operations, loss of data may occur. Ensure that all bytes for a given page have been successfully stored in the EEPROM before proceeding to the next page. Correct management of MCU interrupts during EEPROM page write operations is essential. 24/111 EEPROM Software Data Protect (SDP). The SDP feature is useful for protecting the contents of EEPROM from inadvertent write cycles that may occur during uncontrolled MCU bus conditions. These may happen if the application software gets lost or when VCC is not within normal operating range. Instructions from the MCU are used to enable and disable SDP mode (see Table 8., page 20). Once enabled, the MCU must write an instruction sequence to EEPROM before writing data (much like writing to Flash memory). SDP mode can be used for both byte and page writes to EEPROM. The device will remain in SDP mode until the MCU issues a valid SDP disable instruction. PSD devices are shipped with SDP mode disabled. However, within PSDsoft Express, SDP mode may be enabled as part of programming the device with a device programmer (PSDpro). To enable SDP mode at run time, the MCU must write three specific data bytes at three specific memory locations, as shown in Figure 7., page 25. Any further writes to EEPROM when SDP is set will require this same sequence, followed by the byte(s) to write. The first SDP enable sequence can be followed directly by the byte(s) to be written. To disable SDP mode, the MCU must write specific bytes to six specific locations, as shown in Figure 8., page 26. The MCU must not be executing code from EEPROM when these instructions are invoked. The MCU must be operating from some other memory when enabling or disabling SDP mode. The state of SDP mode is not changed by power on/off sequences (nonvolatile). When either the SDP enable or SDP disable instructions are issued from the MCU, the MCU must use the Toggle bit (status bit DQ6) or the Ready/Busy output pin to check programming status. The Ready/Busy output is driven low from the first write of AAh @ 555h until the completion of the internal storage sequence. Data Polling (status bit DQ7) is not supported when issuing the SDP enable or SDP disable commands. Note: Using the SDP sequence (enabling, disabling, or writing data) is initiated when specific bytes are written to addresses on specific “pages” of EEPROM memory, with no more than 120µs between WRITES. The addresses 555h and AAAh are located on different pages of EEPROM. This is how the PSD distinguishes these instruction sequences from ordinary writes to EEPROM, which are expected to be within a single EEPROM page. PSD813F1A Writing the OTP Row Writing to the OTP row (64 bytes) can only be done once per byte, and is enabled by an instruction. This instruction is composed of three specific WRITE operations of data bytes at three specific memory locations followed by the data to be stored in the OTP row (refer to Table 8., page 20). During the WRITE operations, address bit A6 must be zero, while address bits A5-A0 define the OTP Row byte to be written while any EEPROM Sector Select signal (EESi) is active. Writing the OTP Row is allowed only when SDP mode is not enabled. Figure 7. EEPROM SDP Enable Flowcharts SDP SDP Set not Set WRITE AAh to Address 555h Page Write Instruction WRITE AAh to Address 555h WRITE 55h to Address AAAh WRITE A0h to Address 555h WRITE 55h to Address AAAh Page Write Instruction WRITE A0h to Address 555h WRITE is enabled SDP is set SDP ENABLE ALGORITHM WRITE Data to be Written in any Address Write in Memory Write Data + SDP Set after tWC (Write Cycle Time) ai09219 25/111 PSD813F1A Figure 8. Software Data Protection Disable Flowchart WRITE AAh to Address 555h WRITE 55h to Address AAAh WRITE 80h to Address 555h Page Write Instruction WRITE AAh to Address 555h WRITE 55h to Address AAAh WRITE 20h to Address 555h Unprotected State after tWC (Write Cycle time) ai09220 26/111 PSD813F1A PROGRAMMING FLASH MEMORY Flash memory must be erased prior to being programmed. The MCU may erase Flash memory all at once or by-sector, but not byte-by-byte. A byte of Flash memory erases to all logic ones (FF hex), and its bits are programmed to logic zeros. Although erasing Flash memory occurs on a sector basis, programming Flash memory occurs on a byte basis. The PSD main Flash and optional boot Flash require the MCU to send an instruction to program a byte or perform an erase function (see Table 8., page 20). This differs from EEPROM, which can be programmed with simple MCU bus write operations (unless EEPROM SDP mode is enabled). Once the MCU issues a Flash memory program or erase instruction, it must check for the status of completion. The embedded algorithms that are invoked inside the PSD support several means to provide status to the MCU. Status may be checked using any of three methods: Data Polling, Data Toggle, or the Ready/Busy output pin. Data Polling Polling on DQ7 is a method of checking whether a Program or Erase instruction is in progress or has completed. Figure 9 shows the Data Polling algorithm. When the MCU issues a programming instruction, the embedded algorithm within the PSD begins. The MCU then reads the location of the byte to be programmed in Flash to check status. Data bit DQ7 of this location becomes the compliment of data bit 7of the original data byte to be programmed. The MCU continues to poll this location, comparing DQ7 and monitoring the Error bit on DQ5. When the DQ7 matches data bit 7 of the original data, and the Error bit at DQ5 remains ‘0’, then the embedded algorithm is complete. If the Error bit at DQ5 is ‘1’, the MCU should test DQ7 again since DQ7 may have changed simultaneously with DQ5 (see Figure 9). The Error bit at DQ5 will be set if either an internal timeout occurred while the embedded algorithm attempted to program the byte or if the MCU attempted to program a ‘1’ to a bit that was not erased (not erased is logic ‘0’). It is suggested (as with all Flash memories) to read the location again after the embedded programming algorithm has completed to compare the byte that was written to Flash with the byte that was intended to be written. When using the Data Polling method after an erase instruction, Figure 9 still applies. However, DQ7 will be ‘0’ until the erase operation is complete. A ‘1’ on DQ5 will indicate a timeout failure of the erase operation, a ‘0’ indicates no error. The MCU can read any location within the sector being erased to get DQ7 and DQ5. PSDsoft Express will generate ANSI C code functions which implement these Data Polling algorithms. Figure 9. Data Polling Flowchart START READ DQ5 & DQ7 at VALID ADDRESS DQ7 = DATA YES NO NO DQ5 =1 YES READ DQ7 DQ7 = DATA YES NO FAIL PASS AI01369B 27/111 PSD813F1A Data Toggle Checking the Data Toggle bit on DQ6 is a method of determining whether a Program or Erase instruction is in progress or has completed. Figure 10 shows the Data Toggle algorithm. When the MCU issues a programming instruction, the embedded algorithm within the PSD begins. The MCU then reads the location of the byte to be programmed in Flash to check status. Data bit DQ6 of this location will toggle each time the MCU reads this location until the embedded algorithm is complete. The MCU continues to read this location, checking DQ6 and monitoring the Error bit on DQ5. When DQ6 stops toggling (two consecutive reads yield the same value), and the Error bit on DQ5 remains ‘0’, then the embedded algorithm is complete. If the Error bit on DQ5 is ‘1’, the MCU should test DQ6 again, since DQ6 may have changed simultaneously with DQ5 (see Figure 10). The Error bit at DQ5 will be set if either an internal timeout occurred while the embedded algorithm attempted to program the byte, or if the MCU attempted to program a ‘1’ to a bit that was not erased (not erased is logic ‘0’). It is suggested (as with all Flash memories) to read the location again after the embedded programming algorithm has completed to compare the byte that was written to Flash with the byte that was intended to be written. When using the Data Toggle method after an erase instruction, Figure 10 still applies. DQ6 will toggle until the erase operation is complete. A ‘1’ on DQ5 will indicate a timeout failure of the erase operation, a ‘0’ indicates no error. The MCU can read any location within the sector being erased to get DQ6 and DQ5. 28/111 PSDsoft Express will generate ANSI C code functions which implement these Data Toggling algorithms. Figure 10. Data Toggle Flowchart START READ DQ5 & DQ6 DQ6 = TOGGLE NO YES NO DQ5 =1 YES READ DQ6 DQ6 = TOGGLE NO YES FAIL PASS AI01370B PSD813F1A ERASING FLASH MEMORY Flash Bulk Erase The Flash Bulk Erase instruction uses six write operations followed by a Read operation of the status register, as described in Table 8., page 20. If any byte of the Bulk Erase instruction is wrong, the Bulk Erase instruction aborts and the device is reset to the Read Flash memory status. During a Bulk Erase, the memory status may be checked by reading status bits DQ5, DQ6, and DQ7, as detailed in section entitled PROGRAMMING FLASH MEMORY, page 27. The Error bit (DQ5) returns a ‘1’ if there has been an Erase Failure (maximum number of erase cycles have been executed). It is not necessary to program the array with 00h because the PSD will automatically do this before erasing to 0FFh. During execution of the Bulk Erase instruction, the Flash memory will not accept any instructions. Flash Sector Erase. The Sector Erase instruction uses six write operations, as described in Table 8., page 20. Additional Flash Sector Erase confirm commands and Flash sector addresses can be written subsequently to erase other Flash sectors in parallel, without further coded cycles, if the additional instruction is transmitted in a shorter time than the timeout period of about 100 µs. The input of a new Sector Erase instruction will restart the time-out period. The status of the internal timer can be monitored through the level of DQ3 (Erase time-out bit). If DQ3 is ‘0’, the Sector Erase instruction has been received and the timeout is counting. If DQ3 is ‘1’, the timeout has expired and the PSD is busy erasing the Flash sector(s). Before and during Erase timeout, any instruction other than Erase suspend and Erase Resume will abort the instruction and reset the device to READ mode. It is not necessary to program the Flash sector with 00h as the PSD will do this automatically before erasing (byte=FFh). During a Sector Erase, the memory status may be checked by reading status bits DQ5, DQ6, and DQ7, as detailed in section entitled PROGRAMMING FLASH MEMORY, page 27. During execution of the erase instruction, the Flash block logic accepts only Reset and Erase Suspend instructions. Erasure of one Flash sector may be suspended, in order to read data from another Flash sector, and then resumed. Flash Erase Suspend When a Flash Sector Erase operation is in progress, the Erase Suspend instruction will suspend the operation by writing 0B0h to any address when an appropriate Chip Select (FSi) is true. (See Table 8., page 20). This allows reading of data from another Flash sector after the Erase operation has been suspended. Erase suspend is accepted only during the Flash Sector Erase instruction execution and defaults to READ mode. An Erase Suspend instruction executed during an Erase timeout will, in addition to suspending the erase, terminate the time out. The Toggle Bit DQ6 stops toggling when the PSD internal logic is suspended. The toggle Bit status must be monitored at an address within the Flash sector being erased. The Toggle Bit will stop toggling between 0.1 µs and 15 µs after the Erase Suspend instruction has been executed. The PSD will then automatically be set to Read Flash Block Memory Array mode. If an Erase Suspend instruction was executed, the following rules apply: ■ Attempting to read from a Flash sector that was being erased will output invalid data. ■ Reading from a Flash sector that was not being erased is valid. ■ The Flash memory cannot be programmed, and will only respond to Erase Resume and Reset instructions (READ is an operation and is OK). ■ If a Reset instruction is received, data in the Flash sector that was being erased will be invalid. Flash Erase Resume If an Erase Suspend instruction was previously executed, the erase operation may be resumed by this instruction. The Erase Resume instruction consists of writing 030h to any address while an appropriate Chip Select (FSi) is true. (See Table 8., page 20.) 29/111 PSD813F1A FLASH AND EEPROM MEMORY SPECIFIC FEATURES Flash Memory and EEPROM Sector Protect Each Flash and EEPROM sector can be separately protected against Program and Erase functions. Sector Protection provides additional data security because it disables all program or erase operations. This mode can be activated through the JTAG Port or a Device Programmer. Sector protection can be selected for each sector using the PSDsoft Configuration program. This will automatically protect selected sectors when the device is programmed through the JTAG Port or a Device Programmer. Flash and EEPROM sectors can be unprotected to allow updating of their contents using the JTAG Port or a Device Programmer. The microcontroller can read (but cannot change) the sector protection bits. Any attempt to program or erase a protected Flash or EEPROM sector will be ignored by the device. The Verify operation will result in a READ of the protected data. This allows a guarantee of the retention of the Protection status. The sector protection status can be read by the MCU through the Flash protection and PSD/EE protection registers (CSIOP). See Table 10. Reset The Reset instruction resets the internal memory logic state machine in a few milliseconds. Reset is an instruction of either one write operation or three write operations (refer to Table 8., page 20). Table 10. Sector Protection/Security Bit Definition – Flash Protection Register Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Sec7_Prot Sec6_Prot Sec5_Prot Sec4_Prot Sec3_Prot Sec2_Prot Sec1_Prot Sec0_Prot Note: 1. Bit Definitions: Sec_Prot 1 = Flash is write protected. Sec_Prot 0 = Flash is not write protected. Table 11. Sector Protection/Security Bit Definition – PSD/EE Protection Register Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Security_Bit not used not used not used Sec3_Prot Sec2_Prot Sec1_Prot Sec0_Prot Note: 1. Bit Definitions: Sec_Prot 1 = EEPROM Boot Sector is write protected. Sec_Prot 0 = EEPROM Boot Sector is not write protected. Security_Bit 0 = Security Bit in device has not been set. 1 = Security Bit in device has been set. SRAM The SRAM is a 16 Kbit (2K x 8) memory. The SRAM is enabled when RS0 the SRAM chip select output from the DPLD is high. RS0 can contain up 30/111 to two product terms, allowing flexible memory mapping. PSD813F1A MEMORY SELECT SIGNALS The main Flash (FSi), EEPROM (EESi), and SRAM (RS0) memory select signals are all outputs of the DPLD. They are setup by entering equations for them in PSDsoft Express. The following rules apply to the equations for the internal chip select signals: 1. Flash memory and EEPROM sector select signals must not be larger than the physical sector size. 2. Any main Flash memory sector must not be mapped in the same memory space as another Flash sector. 3. An EEPROM sector must not be mapped in the same memory space as another EEPROM sector. 4. SRAM, I/O, and Peripheral I/O spaces must not overlap. 5. An EEPROM sector may overlap a main Flash memory sector. In case of overlap, priority will be given to the EEPROM. 6. SRAM, I/O, and Peripheral I/O spaces may overlap any other memory sector. Priority will be given to the SRAM, I/O, or Peripheral I/O. Example FS0 is valid when the address is in the range of 8000h to BFFFh, EES0 is valid from 8000h to 9FFFh, and RS0 is valid from 8000h to 87FFh. Any address in the range of RS0 will always access the SRAM. Any address in the range of EES0 greater than 87FFh (and less than 9FFFh) will automatically address EEPROM segment 0. Any address greater than 9FFFh will access the Flash memory segment 0. You can see that half of the Flash memory segment 0 and one-fourth of EEPROM segment 0 can not be accessed in this example. Also note that an equation that defined FS1 to anywhere in the range of 8000h to BFFFh would not be valid. Figure 11 shows the priority levels for all memory components. Any component on a higher level can overlap and has priority over any component on a lower level. Components on the same level must not overlap. Level one has the highest priority and level 3 has the lowest. Memory Select Configuration for MCUs with Separate Program and Data Spaces The 8031 and compatible family of microcontrollers, which includes the 80C51, 80C151, 80C251, 80C51XA, and the C500 family, have separate address spaces for code memory (selected using PSEN) and data memory (selected using RD). Any of the memories within the PSD can reside in either space or both spaces. This is controlled through manipulation of the VM register that resides in the PSD’s CSIOP space. The VM register is set using PSDsoft Express to have an initial value. It can subsequently be changed by the microcontroller so that memory mapping can be changed on-the-fly. For example, I may wish to have SRAM and Flash in Data Space at boot, and EEPROM in Program Space at boot, and later swap EEPROM and Flash. This is easily done with the VM register by using PSDsoft Express to configure it for boot up and having the microcontroller change it when desired. Table 12 describes the VM Register. Figure 11. Priority Level of Memory and I/O Components Highest Priority Level 1 SRAM, I /O, or Peripheral I /O Level 2 Secondary EEPROM Memory Level 3 Flash Memory Lowest Priority AI09221 Table 12. VM Register Bit 7 PIO_EN Bit 5 Bit 4 FL_Data 0 = disable not used PIO mode not used 0 = RD can’t access Flash memory 0 = PSEN 0 = RD can’t can’t access access EEPROM Flash memory 1= enable PIO mode not used 1 = RD access Flash memory 1 = RD access EEPROM Bit 6 not used Bit 3 EE_Data Bit 2 FL_Code 1 = PSEN access Flash memory Bit 1 EE_Code Bit 0 SRAM_Code 0 = PSEN 0 = PSEN can’t can’t access access EEPROM SRAM 1 = PSEN 1 = PSEN access access EEPROM SRAM 31/111 PSD813F1A Separate Space Modes Code memory space is separated from data memory space. For example, the PSEN signal is used to access the program code from the Flash Memory, while the RD signal is used to access data from the EEPROM, SRAM and I/O Ports. This configuration requires the VM register to be set to 0Ch. See Figure 12. Combined Space Modes The program and data memory spaces are combined into one space that allows the main Flash Memory, EEPROM, and SRAM to be accessed by either PSEN or RD. For example, to configure the main Flash memory in combined space mode, bits 2 and 4 of the VM register are set to “1” (see Figure 13). Figure 12. 80C31 Memory Modes - Separate Space DPLD Flash Memory RS0 EEPROM Memory SRAM EES0-EES3 FS0-FS7 CS CS OE CS OE OE PSEN RD AI09222 Figure 13. 80C31 Memory Mode - Combined Space DPLD RD RS0 Flash Memory EEPROM Memory SRAM EES0-EES3 FS0-FS7 CS CS OE CS OE OE VM REG BIT 3 VM REG BIT 4 PSEN VM REG BIT 1 VM REG BIT 2 RD VM REG BIT 0 AI09223 32/111 PSD813F1A PAGE REGISTER The 8-bit Page Register increases the addressing capability of the microcontroller by a factor of up to 256. The contents of the register can also be read by the microcontroller. The outputs of the Page Register (PGR0-PGR7) are inputs to the DPLD decoder and can be included in the Flash Memory, EEPROM, and SRAM chip select equations. If memory paging is not needed, or if not all 8 page register bits are needed for memory paging, then these bits may be used in the CPLD for general logic. Figure 14 shows the Page Register. The eight flip flops in the register are connected to the internal data bus D0-D7. The microcontroller can write to or read from the Page Register. The Page Register can be accessed at address location CSIOP + E0h. Figure 14. Page Register RESET D0 - D7 D0 Q0 D1 Q1 D2 Q2 D3 Q3 D4 Q4 D5 Q5 D6 Q6 D7 Q7 PGR0 INTERNAL SELECTS AND LOGIC PGR1 PGR2 PGR3 PGR4 Flash DPLD AND Flash CPLD PGR5 PGR6 PGR7 R/W PAGE REGISTER PLD AI09224 33/111 PSD813F1A PLD’S The PLDs bring programmable logic functionality to the PSD. After specifying the logic for the PLDs using the PSDabel tool in PSDsoft Express, the logic is programmed into the device and available upon power-up. The PSD contains two PLDs: the Decode PLD (DPLD), and the Complex PLD (CPLD). The PLDs are briefly discussed in the next few paragraphs, and in more detail in the sections entitled DECODE PLD (DPLD) and COMPLEX PLD (CPLD). Figure 15., page 35 shows the configuration of the PLDs. The DPLD performs address decoding for internal and external components, such as memory, registers, and I/O port selects. The CPLD can be used for logic functions, such as loadable counters and shift registers, state machines, and encoding and decoding logic. These logic functions can be constructed using the 16 Output macrocells (OMCs), 24 Input macrocells (IMCs), and the AND array. The CPLD can also be used to generate external chip selects. The AND array is used to form product terms. These product terms are specified using PSDabel. An Input Bus consisting of 73 signals is connected to the PLDs. The signals are shown in Table 13. The Turbo Bit in PSD The PLDs in the PSD can minimize power consumption by switching off when inputs remain unchanged for an extended time of about 70ns. Setting the Turbo mode bit to off (Bit 3 of the PMMR0 register) automatically places the PLDs into standby if no inputs are changing. Turbo-off mode increases propagation delays while reducing power consumption. See the section entitled POWER MANAGEMENT, page 64, on how to set the Turbo Bit. Additionally, five bits are available in the PMMR2 register to block MCU control signals from entering 34/111 the PLDs. This reduces power consumption and can be used only when these MCU control signals are not used in PLD logic equations. The PLDs in the PSD can minimize power consumption by switching off when inputs remain unchanged for an extended time of about 70ns. Each of the two PLDs has unique characteristics suited for its applications. They are described in the following sections. Table 13. DPLD and CPLD Inputs Input Source Input Name Number of Signals MCU Address Bus1 A15-A0 16 MCU Control Signals CNTL2-CNTL0 3 Reset RST 1 Power-down PDN 1 Port A Input Macrocells PA7-PA0 8 Port B Input Macrocells PB7-PB0 8 Port C Input Macrocells PC7-PC0 8 Port D Inputs PD2-PD0 3 Page Register PGR7-PGR0 8 Macrocell AB Feedback MCELLAB.FB7FB0 8 Macrocell BC Feedback MCELLBC.FB7FB0 8 EEPROM Program Status Bit Ready/Busy 1 Note: 1. The address inputs are A19-A4 in 80C51XA mode. DATA BUS 16 1 2 1 1 4 8 CPLD PT ALLOC. OUTPUT MACROCELL FEEDBACK DECODE PLD 24 INPUT MACROCELL (PORT A,B,C) INPUT MACROCELL & INPUT PORTS PORT D INPUTS 24 3 MACROCELL ALLOC. 3 8 MCELLBC TO PORT B OR C EXTERNAL CHIP SELECTS TO PORT D 8 MCELLAB TO PORT A OR B DIRECT MACROCELL ACCESS FROM MCU DATA BUS JTAG SELECT PERIPHERAL SELECTS CSIOP SELECT SRAM SELECT EEPROM SELECTS FLASH MEMORY SELECTS 16 OUTPUT MACROCELL DIRECT MACROCELL INPUT TO MCU DATA BUS 73 73 PAGE REGISTER I/O PORTS 8 AI09225 PSD813F1A Figure 15. PLD Diagram 35/111 PLD INPUT BUS PSD813F1A DECODE PLD (DPLD) The DPLD, shown in Figure 16, is used for decoding the address for internal and external components. The DPLD can be used to generate the following decode signals: ■ 8 sector selects for the main Flash memory (three product terms each) ■ 4 sector selects for the EEPROM (three product terms each) ■ ■ ■ ■ 1 internal SRAM select signal (two product terms) 1 internal CSIOP (PSD configuration register) select signal 1 JTAG select signal (enables JTAG on Port C) 2 internal peripheral select signals (peripheral I/O mode). Figure 16. DPLD Logic Array (INPUTS) I /O PORTS (PORT A,B,C) 3 EES 0 3 EES 1 3 EES 2 3 EES 3 3 FS0 (24) 3 MCELLAB.FB [7:0] (FEEDBACKS) FS1 (8) 3 MCELLBC.FB [7:0] (FEEDBACKS) (8) PGR0 - PGR7 (8) FS2 3 FS3 3 A[15:0](1) 3 (3) PDN (APD OUTPUT) (1) 8 FLASH MEMORY SECTOR SELECTS FS4 (16) PD[2:0] (ALE,CLKIN,CSI) EEPROM SELECTS FS5 3 FS6 3 FS7 CNTRL[2:0] (READ/WRITE CONTROL SIGNALS) (3) RESET (1) RD_BSY (1) 2 RS0 1 CSIOP 1 PSEL0 1 PSEL1 1 JTAGSEL SRAM SELECT I/O DECODER SELECT PERIPHERAL I/O MODE SELECT AI09226 Note: 1. The address inputs are A19-A4 in 80C51XA mode. 36/111 PSD813F1A COMPLEX PLD (CPLD) The CPLD can be used to implement system logic functions, such as loadable counters and shift registers, system mailboxes, handshaking protocols, state machines, and random logic. The CPLD can also be used to generate 3 external chip selects, routed to Port D. Although external chip selects can be produced by any Output Macrocell, these three external chip selects on Port D do not consume any Output macrocells. As shown in Figure 15., page 35, the CPLD has the following blocks: ■ 24 Input macrocells (IMCs) ■ 16 Output macrocells (OMCs) ■ Macrocell Allocator ■ Product Term Allocator AND array capable of generating up to 137 product terms ■ Four I/O ports. Each of the blocks are described in the subsections that follow. The Input Macrocells (IMC) and Output Macrocells (OMC) are connected to the PSD internal data bus and can be directly accessed by the microcontroller. This enables the MCU software to load data into the Output Macrocells (OMC) or read data from both the Input and Output Macrocells (IMC and OMC). This feature allows efficient implementation of system logic and eliminates the need to connect the data bus to the AND logic array as required in most standard PLD macrocell architectures. ■ Figure 17. Macrocell and I/O Port PLD INPUT BUS PRODUCT TERMS FROM OTHER MACROCELLS MCU ADDRESS / DATA BUS TO OTHER I/O PORTS CPLD MACROCELLS I/O PORTS DATA LOAD CONTROL PT PRESET MCU DATA IN PRODUCT TERM ALLOCATOR LATCHED ADDRESS OUT DATA MCU LOAD I/O PIN D Q MUX POLARITY SELECT MUX CPLD OUTPUT PR DI LD D/T MUX PT CLOCK GLOBAL CLOCK CK CL CLOCK SELECT SELECT Q D/T/JK FF SELECT COMB. /REG SELECT CPLD OUTPUT PDR MACROCELL TO I/O PORT ALLOC. INPUT Q DIR REG. D WR PT CLEAR PT OUTPUT ENABLE (OE) MACROCELL FEEDBACK INPUT MACROCELLS I/O PORT INPUT MUX PLD INPUT BUS MACROCELL OUT TO MCU PT INPUT LATCH GATE/CLOCK ALE/AS MUX AND ARRAY WR UP TO 10 PRODUCT TERMS Q D Q D G AI02874 37/111 PSD813F1A Output Macrocell (OMC) Eight of the Output Macrocells (OMC) are connected to Ports A and B pins and are named as McellAB0-McellAB7. The other eight macrocells are connected to Ports B and C pins and are named as McellBC0-McellBC7. If an McellAB output is not assigned to a specific pin in PSDabel, the Macrocell Allocator will assign it to either Port A or B. The same is true for a McellBC output on Port B or C. Table 14 shows the macrocells and Port assignment. The Output Macrocell (OMC) architecture is shown in Figure 18., page 40. As shown in the figure, there are native product terms available from the AND array, and borrowed product terms available (if unused) from other OMCs. The polarity of the product term is controlled by the XOR gate. The OMC can implement either sequential logic, using the flip-flop element, or combinatorial logic. The multiplexer selects between the sequential or combinatorial logic outputs. The multiplexer output can drive a Port pin and has a feedback path to the AND array inputs. The flip-flop in the OMC can be configured as a D, T, JK, or SR type in the PSDabel program. The flip-flop’s clock, preset, and clear inputs may be driven from a product term of the AND array. Alternatively, the external CLKIN signal can be used for the clock input to the flip-flop. The flip-flop is clocked on the rising edge of the clock input. The preset and clear are active-high inputs. Each clear input can use up to two product terms. Table 14. Output Macrocell Port and Data Bit Assignments Output Macrocell Port Assignment Native Product Terms Maximum Borrowed Product Terms Data Bit for Loading or Reading McellAB0 Port A0, B0 3 6 D0 McellAB1 Port A1, B1 3 6 D1 McellAB2 Port A2, B2 3 6 D2 McellAB3 Port A3, B3 3 6 D3 McellAB4 Port A4, B4 3 6 D4 McellAB5 Port A5, B5 3 6 D5 McellAB6 Port A6, B6 3 6 D6 McellAB7 Port A7, B7 3 6 D7 McellBC0 Port B0, C0 4 5 D0 McellBC1 Port B1, C1 4 5 D1 McellBC2 Port B2, C2 4 5 D2 McellBC3 Port B3, C3 4 5 D3 McellBC4 Port B4, C4 4 6 D4 McellBC5 Port B5, C5 4 6 D5 McellBC6 Port B6, C6 4 6 D6 McellBC7 Port B7, C7 4 6 D7 38/111 PSD813F1A Product Term Allocator The CPLD has a Product Term Allocator. The PSDabel compiler uses the Product Term Allocator to borrow and place product terms from one macrocell to another. The following list summarizes how product terms are allocated: ■ McellAB0-McellAB7 all have three native product terms and may borrow up to six more ■ McellBC0-McellBC3 all have four native product terms and may borrow up to five more ■ McellBC4-McellBC7 all have four native product terms and may borrow up to six more. Each macrocell may only borrow product terms from certain other macrocells. Product terms already in use by one macrocell are not available for another macrocell. If an equation requires more product terms than are available to it, then “external” product terms are required, which will consume other Output Macrocells (OMC). If external product terms are used, extra delay will be added for the equation that required the extra product terms. This is called product term expansion. PSDsoft Express will perform this expansion as needed. Loading and Reading the Output Macrocells (OMC). The OMCs occupy a memory location in the MCU address space, as defined by the CSIOP (refer to the I/O section). The flip-flops in each of the 16 OMCs can be loaded from the data bus by a microcontroller. Loading the OMCs with data from the MCU takes priority over internal functions. As such, the preset, clear, and clock inputs to the flip-flop can be overridden by the MCU. The ability to load the flip-flops and read them back is useful in such applications as loadable counters and shift registers, mailboxes, and handshaking protocols. Data can be loaded to the OMCs on the trailing edge of the WR signal (edge loading) or during the time that the WR signal is active (level loading). The method of loading is specified in PSDsoft Express Configuration. The OMC Mask Register There is one Mask Register for each of the two groups of eight OMCs. The Mask Registers can be used to block the loading of data to individual OMCs. The default value for the Mask Registers is 00h, which allows loading of the OMCs. When a given bit in a Mask Register is set to a ‘1’, the MCU will be blocked from writing to the associated OMC. For example, suppose McellAB0-3 are being used for a state machine. You would not want a MCU write to McellAB to overwrite the state machine registers. Therefore, you would want to load the Mask Register for McellAB (Mask Macrocell AB) with the value 0Fh. The Output Enable of the OMC The OMC can be connected to an I/O port pin as a PLD output. The output enable of each Port pin driver is controlled by a single product term from the AND array, ORed with the Direction Register output. The pin is enabled upon power up if no output enable equation is defined and if the pin is declared as a PLD output in PSDsoft Express. If the OMC output is declared as an internal node and not as a Port pin output in the PSDabel file, then the Port pin can be used for other I/O functions. The internal node feedback can be routed as an input to the AND array. 39/111 40/111 CLKIN PT CLK PT PT PT PT ALLOCATOR PRESET(.PR) ENABLE (.OE) PORT INPUT FEEDBACK (.FB) MUX CLEAR (.RE) POLARITY SELECT WR RD MACROCELL CS MASK REG. Q MUX PROGRAMMABLE FF (D / T/JK /SR) CLR IN LD DIN PR COMB/REG SELECT DIRECTION REGISTER D [ 7:0] MACROCELL ALLOCATOR INTERNAL DATA BUS INPUT MACROCELL PORT DRIVER AI02875B I/O PIN PSD813F1A Figure 18. CPLD Output Macrocell AND ARRAY PLD INPUT BUS PSD813F1A Input Macrocells (IMC) The CPLD has 24 IMCs, one for each pin on Ports A, B, and C. The architecture of the IMC is shown in Figure 19., page 42. The IMCs are individually configurable, and can be used as a latch, register, or to pass incoming Port signals prior to driving them onto the PLD input bus. The outputs of the IMCs can be read by the microcontroller through the internal data bus. The enable for the latch and clock for the register are driven by a multiplexer whose inputs are a product term from the CPLD AND array or the MCU address strobe (ALE/AS). Each product term output is used to latch or clock four IMCs. Port inputs 3-0 can be controlled by one product term and 7-4 by another. Configurations for the IMCs are specified by equations written in PSDabel (see Application Note 55). Outputs of the IMCs can be read by the MCU via the IMC buffer. See the I/O Port section on how to read the IMCs. IMCs can use the address strobe to latch address bits higher than A15. Any latched addresses are routed to the PLDs as inputs. IMCs are particularly useful with handshaking communication applications where two processors pass data back and forth through a common mailbox. Figure 20., page 43 shows a typical configuration where the Master MCU writes to the Port A Data Out Register. This, in turn, can be read by the Slave MCU via the activation of the “SlaveRead” output enable product term. The Slave can also write to the Port A IMCs and the Master can then read the IMCs directly. Note that the “Slave-Read” and “Slave-wr” signals are product terms that are derived from the Slave MCU inputs RD, WR, and Slave_CS. 41/111 42/111 FEEDBACK PT PT ENABLE ( .OE ) MUX OUTPUT MACROCELLS BC AND MACROCELL AB G D D LATCH Q D FF Q INPUT MACROCELL _ RD ALE/AS DIRECTION REGISTER D [ 7:0] INPUT MACROCELL MUX PT INTERNAL DATA BUS PORT DRIVER AI02876B I/O PIN PSD813F1A Figure 19. Input Macrocell AND ARRAY PLD INPUT BUS MASTER MCU D [ 7:0] MCU - WR MCU - RD PSD MCU -RD CPLD D Q Q D PORT A INPUT MACROCELL SLAVE– WR MCU -WR PORT A DATA OUT REGISTER SLAVE – READ WR RD SLAVE – CS PORT A D [ 7:0] AI02877C SLAVE MCU PSD813F1A Figure 20. Handshaking Communication Using Input Macrocells 43/111 PSD813F1A MCU BUS INTERFACE The “no-glue logic” PSD MCU Bus Interface block can be directly connected to most popular MCUs and their control signals. Key 8-bit MCUs, with their bus types and control signals, are shown in Table 15. The interface type is specified using the PSDsoft Express Configuration. Table 15. MCUs and their Control Signals Data Bus Width CNTL0 CNTL1 CNTL2 8031 8 WR RD PSEN 80C51XA 8 WR RD PSEN 80C251 8 WR 80C251 8 80198 MCU PC7 PD02 ADIO0 PA3-PA0 PA7-PA3 (Note 1) ALE A0 (Note 1) (Note 1) (Note 1) ALE A4 A3-A0 (Note 1) PSEN (Note 1) (Note 1) ALE A0 (Note 1) (Note 1) WR RD PSEN (Note 1) ALE A0 (Note 1) (Note 1) 8 WR RD (Note 1) (Note 1) ALE A0 (Note 1) (Note 1) 68HC11 8 R/W E (Note 1) (Note 1) AS A0 (Note 1) (Note 1) 68HC912 8 R/W E (Note 1) DBE A0 (Note 1) (Note 1) Z80 8 WR RD (Note 1) (Note 1) (Note 1) A0 D3-D0 D7-D4 Z8 8 R/W DS (Note 1) (Note 1) AS A0 (Note 1) (Note 1) 68330 8 R/W DS (Note 1) (Note 1) AS A0 (Note 1) (Note 1) M37702M2 8 R/W E (Note 1) (Note 1) ALE A0 D3-D0 D7-D4 AS Note: 1. Unused CNTL2 pin can be configured as CPLD input. Other unused pins (PC7, PD0, PA3-0) can be configured for other I/O functions. 2. ALE/AS input is optional for MCUs with a non-multiplexed bus 44/111 PSD813F1A PSD Interface to a Multiplexed 8-Bit Bus Figure 21 shows an example of a system using a MCU with an 8-bit multiplexed bus and a PSD. The ADIO port on the PSD is connected directly to the MCU address/data bus. Address Strobe (ALE/AS, PD0) latches the address signals internally. Latched addresses can be brought out to Port A or B. The PSD drives the ADIO data bus only when one of its internal resources is accessed and Read Strobe (RD, CNTL1) is active. Should the system address bus exceed sixteen bits, Ports A, B, C, or D may be used as additional address inputs. Figure 21. An Example of a Typical 8-bit Multiplexed Bus Interface PSD MCU AD [ 7:0] A[ 15:8] ADIO PORT WR WR (CNTRL0) RD RD (CNTRL1) BHE (CNTRL2) BHE RST ALE A [ 7: 0] PORT A (OPTIONAL) PORT B (OPTIONAL) A [ 15: 8] PORT C ALE (PD0) PORT D RESET AI02878C 45/111 PSD813F1A PSD Interface to a Non-Multiplexed 8-Bit Bus Figure 22 shows an example of a system using a microcontroller with an 8-bit non-multiplexed bus and a PSD. The address bus is connected to the ADIO Port, and the data bus is connected to Port A. Port A is in tri-state mode when the PSD is not accessed by the microcontroller. Should the system address bus exceed sixteen bits, Ports B, C, or D may be used for additional address inputs. Figure 22. An Example of a Typical 8-bit Non-Multiplexed Bus Interface PSD MCU D [ 7:0] ADIO PORT PORT A D [ 7:0] A [ 15:0] PORT B WR WR (CNTRL0) RD RD (CNTRL1) BHE (CNTRL2) BHE RST ALE A[ 23:16] (OPTIONAL) PORT C ALE (PD0) PORT D RESET AI02879C 46/111 PSD813F1A Data Byte Enable Reference Microcontrollers have different data byte orientations. The following table shows how the PSD interprets byte/word operations in different bus WRITE configurations. Even-byte refers to locations with address A0 equal to zero and odd byte as locations with A0 equal to one. Table 16. Eight-Bit Data Bus BHE A0 D7-D0 X 0 Even Byte X 1 Odd Byte MCU Bus Interface Examples Figure 23 to 26 show examples of the basic connections between the PSD and some popular MCUs. The PSD Control input pins are labeled as to the MCU function for which they are configured. The MCU bus interface is specified using the PSDsoft Express Configuration. The first configuration is 80C31-compatible, and the bus interface to the PSD is identical to that shown in Figure 23. The second and third configurations have the same bus connection as shown in Table 17., page 48. There is only one READ input (PSEN) connected to the CNTL1 pin on the PSD. The A16 connection to the PA0 pin allows for a larger address input to the PSD. Configuration 4 is shown in Figure 24., page 49. The RD signal is connected to Cntl1 and the PSEN signal is connected to the CNTL2. 80C31 Figure 23 shows the bus interface for the 80C31, which has an 8-bit multiplexed address/data bus. The lower address byte is multiplexed with the data bus. The MCU control signals Program Select Enable (PSEN, CNTL2), Read Strobe (RD, CNTL1), and Write Strobe (WR, CNTL0) may be used for accessing the internal memory and I/O Ports. The ALE input (pin PD0) latches the address. Figure 23. Interfacing the PSD with an 80C31 AD7-AD0 PSD 80C31 31 19 18 9 RESET 12 13 14 15 EA/VP X1 X2 RESET INT0 INT1 T0 T1 1 2 3 4 5 6 7 8 P1.0 P1.1 P1.2 P1.3 P1.4 P1.5 P1.6 P1.7 P0.0 P0.1 P0.2 P0.3 P0.4 P0.5 P0.6 P0.7 P2.0 P2.1 P2.2 P2.3 P2.4 P2.5 P2.6 P2.7 RD WR PSEN ALE/P TXD RXD AD0 AD1 AD2 AD3 AD4 AD5 AD6 AD7 30 31 32 33 34 35 36 37 39 38 37 36 35 34 33 32 AD0 AD1 AD2 AD3 AD4 AD5 AD6 AD7 21 22 23 24 25 26 27 28 A8 A9 A10 A11 A12 A13 A14 A15 39 40 41 42 43 44 45 46 17 RD WR 47 16 29 30 11 10 RESET RESET AD[ 7:0 ] PSEN ALE 50 49 10 9 8 48 ADIO0 ADIO1 ADIO2 ADIO3 ADIO4 ADIO5 ADIO6 ADIO7 PA0 PA1 PA2 PA3 PA4 PA5 PA6 PA7 ADIO8 ADIO9 ADIO10 ADIO11 ADIO12 ADIO13 ADIO14 ADIO15 PB0 PB1 PB2 PB3 PB4 PB5 PB6 PB7 CNTL0 (WR) PC0 PC1 PC2 PC3 PC4 PC5 PC6 PC7 CNTL1(RD) CNTL2 (PSEN) PD0-ALE PD1 PD2 29 28 27 25 24 23 22 21 7 6 5 4 3 2 52 51 20 19 18 17 14 13 12 11 RESET AI02880C 47/111 PSD813F1A 80C251 The Intel 80C251 MCU features a user-configurable bus interface with four possible bus configurations, as shown in Table 18., page 49. The 80C251 has two major operating modes: Page Mode and Non-Page Mode. In Non-Page Mode, the data is multiplexed with the lower address byte, and ALE is active in every bus cycle. In Page Mode, data D[7:0] is multiplexed with address A[15:8]. In a bus cycle where there is a Page hit, the ALE signal is not active and only addresses A[7:0] are changing. The PSD supports both modes. In Page Mode, the PSD bus timing is identical to Non-Page Mode except the address hold time and setup time with respect to ALE is not required. The PSD access time is measured from address A[7:0] valid to data in valid. Table 17. Interfacing the PSD with the 80C251, with One READ Input PSD 80C251SB 2 3 4 5 6 7 8 9 21 20 11 13 14 15 16 17 RESET 10 35 P1.0 P1.1 P1.2 P1.3 P1.4 P1.5 P1.6 P1.7 P0.0 P0.1 P0.2 P0.3 P0.4 P0.5 P0.6 P0.7 X1 P2.0 P2.1 P2.2 P2.3 P2.4 P2.5 P2.6 P2.7 X2 P3.0/RXD P3.1/TXD P3.2/INT0 P3.3/INT1 P3.4/T0 P3.5/T1 RST EA ALE PSEN WR RD/A16 A0 A1 A2 A3 A4 A5 A6 A7 30 31 32 33 34 35 36 37 AD8 AD9 AD10 AD11 AD12 AD13 AD14 AD15 39 40 41 42 43 44 45 46 43 42 41 40 39 38 37 36 A0 A1 A2 A3 A4 A5 A6 A7 24 25 26 27 28 29 30 31 AD8 AD9 AD10 AD11 AD12 AD13 AD14 AD15 33 ALE 47 32 RD 50 18 WR 19 A16 49 10 9 8 RESET RESET 48 ADIO0 ADIO1 ADIO2 ADIO3 ADIO4 ADIO5 ADIO6 ADIO7 ADIO8 ADIO9 ADIO10 ADIO11 ADIO12 ADIO13 ADIO14 ADIO15 CNTL0 ( WR) CNTL1( RD) CNTL 2(PSEN) PD0-ALE PD1 PD2 PA0 PA1 PA2 PA3 PA4 PA5 PA6 PA7 PB0 PB1 PB2 PB3 PB4 PB5 PB6 PB7 PC0 PC1 PC2 PC3 PC4 PC5 PC6 PC7 29 28 27 25 24 23 22 21 A161 A171 7 6 5 4 3 2 52 51 20 19 18 17 14 13 12 11 RESET AI02881C Note: 1. The A16 and A17 connections are optional. 2. In non-Page-Mode, AD7-AD0 connects to ADIO7-ADIO0. 48/111 PSD813F1A Figure 24. Interfacing the PSD with the 80C251, with RD and PSEN Inputs 80C251SB 2 3 4 5 6 7 8 9 21 20 11 13 14 15 16 17 RESET 10 35 PSD P1.0 P1.1 P1.2 P1.3 P1.4 P1.5 P1.6 P1.7 P0.0 P0.1 P0.2 P0.3 P0.4 P0.5 P0.6 P0.7 X1 P2.0 P2.1 P2.2 P2.3 P2.4 P2.5 P2.6 P2.7 X2 P3.0/RXD P3.1/TXD P3.2/INT0 P3.3/INT1 P3.4/T0 P3.5/T1 RST ALE PSEN WR RD/A16 EA 43 42 41 40 39 38 37 36 A0 A1 A2 A3 A4 A5 A6 A7 24 25 26 27 28 29 30 31 AD8 AD9 AD10 AD11 AD12 AD13 AD14 AD15 A0 A1 A2 A3 A4 A5 A6 A7 30 31 32 33 34 35 36 37 AD8 AD9 AD10 AD11 AD12 AD13 AD14 AD15 39 40 41 42 43 44 45 46 33 ALE 47 32 RD 50 18 WR 19 PSEN 49 10 9 8 RESET RESET 48 ADIO0 ADIO1 ADIO2 ADIO3 ADIO4 ADIO5 ADIO6 ADIO7 PA0 PA1 PA2 PA3 PA4 PA5 PA6 PA7 ADIO8 ADIO9 ADIO10 ADIO11 ADIO12 ADIO13 ADIO14 ADIO15 PB0 PB1 PB2 PB3 PB4 PB5 PB6 PB7 CNTL0 ( WR) CNTL1( RD) CNTL 2(PSEN) PD0-ALE PD1 PD2 PC0 PC1 PC2 PC3 PC4 PC5 PC6 PC7 29 28 27 25 24 23 22 21 7 6 5 4 3 2 52 51 20 19 18 17 14 13 12 11 RESET AI02882C Table 18. 80C251 Configurations Configuration 80C251 READ/WRITE Pins Connecting to PSD Pins Page Mode 1 WR RD PSEN CNTL0 CNTL1 CNTL2 Non-Page Mode, 80C31 compatible A7-A0 multiplex with D7-D0 2 WR PSEN only CNTL0 CNTL1 Non-Page Mode A7-A0 multiplex with D7-D0 3 WR PSEN only CNTL0 CNTL1 Page Mode A15-A8 multiplex with D7-D0 4 WR RD PSEN CNTL0 CNTL1 CNTL2 Page Mode A15-A8 multiplex with D7-D0 49/111 PSD813F1A 80C51XA The Philips 80C51XA microcontroller family supports an 8- or 16-bit multiplexed bus that can have burst cycles. Address bits (A3-A0) are not multiplexed, while (A19-A4) are multiplexed with data bits (D15-D0) in 16-bit mode. In 8-bit mode, (A11A4) are multiplexed with data bits (D7-D0). The 80C51XA can be configured to operate in eight-bit data mode. (shown in Figure 25). The 80C51XA improves bus throughput and performance by executing Burst cycles for code fetches. In Burst Mode, address A19-A4 are latched internally by the PSD, while the 80C51XA changes the A3-A0 lines to fetch up to 16 bytes of code. The PSD access time is then measured from address A3-A0 valid to data in valid. The PSD bus timing requirement in Burst Mode is identical to the normal bus cycle, except the address setup and hold time with respect to ALE does not apply. Figure 25. Interfacing the PSD with the 80C51X, 8-bit Data Bus PSD 80C51XA 21 20 11 13 6 7 9 8 16 RESET 10 14 15 XTAL1 XTAL2 RXD0 TXD0 RXD1 TXD1 T2EX T2 T0 RST INT0 INT1 A0/WRH A1 A2 A3 A4D0 A5D1 A6D2 A7D3 A8D4 A9D5 A10D6 A11D7 A12D8 A13D9 A14D10 A15D11 A16D12 A17D13 A18D14 A19D15 2 3 4 5 43 42 41 40 39 38 37 36 24 25 26 27 28 29 30 31 A0 A1 A2 A3 A4D0 A5D1 A6D2 A7D3 A8D4 A9D5 A10D6 A11D7 A12 A13 A14 A15 A16 A17 A18 A19 A4D0 A5D1 A6D2 A7D3 A8D4 A9D5 A10D6 A11D7 30 31 32 33 34 35 36 37 A12 A13 A14 A15 A16 A17 A18 A19 39 ADIO8 40 ADIO9 41 ADIO10 42 ADIO11 43 AD1012 44 AD1013 45 ADIO14 46 ADIO15 47 50 35 17 EA/WAIT BUSW PSEN RD WRL ALE 32 PSEN 49 19 RD WR ALE 10 8 9 18 33 48 ADIO0 ADIO1 ADIO2 ADIO3 AD104 AD105 ADIO6 ADIO7 CNTL0 (WR) CNTL1(RD) CNTL 2(PSEN) PD0-ALE PD1 PD2 PA0 PA1 PA2 PA3 PA4 PA5 PA6 PA7 PB0 PB1 PB2 PB3 PB4 PB5 PB6 PB7 PC0 PC1 PC2 PC3 PC4 PC5 PC6 PC7 29 28 27 25 24 23 22 21 A0 A1 A2 A3 7 6 5 4 3 2 52 51 20 19 18 17 14 13 12 11 RESET RESET AI02883C 50/111 PSD813F1A 68HC11 Figure 26 shows an interface to a 68HC11 where the PSD is configured in 8-bit multiplexed mode with E and R/W settings. The DPLD can generate the READ and WR signals for external devices. Figure 26. Interfacing the PSD with a 68HC11 AD7-AD0 AD7-AD0 PSD 31 30 29 28 27 AD0 AD1 AD2 AD3 AD4 AD5 AD6 AD7 30 31 32 33 34 35 36 37 42 41 40 39 38 37 36 35 A8 A9 A10 A11 A12 A13 A14 A15 39 40 41 42 43 44 45 46 68HC11 8 7 RESET 17 19 18 2 34 33 32 43 44 45 46 47 48 49 50 52 51 XT EX RESET IRQ XIRQ MODB PA0 PA1 PA2 PE0 PE1 PE2 PE3 PE4 PE5 PE6 PE7 VRH VRL PA3 PA4 PA5 PA6 PA7 PB0 PB1 PB2 PB3 PB4 PB5 PB6 PB7 PC0 PC1 PC2 PC3 PC4 PC5 PC6 PC7 PD0 PD1 PD2 PD3 PD4 PD5 MODA E AS R/W 9 10 11 12 13 14 15 16 AD0 AD1 AD2 AD3 AD4 AD5 AD6 AD7 20 21 22 23 24 25 47 50 49 10 9 8 48 ADIO0 ADIO1 ADIO2 ADIO3 AD104 AD105 ADIO6 ADIO7 PA0 PA1 PA2 PA3 PA4 PA5 PA6 PA7 ADIO8 ADIO9 ADIO10 ADIO11 AD1012 AD1013 ADIO14 ADIO15 PB0 PB1 PB2 PB3 PB4 PB5 PB6 PB7 CNTL0 (R _W) CNTL1(E) CNTL 2 PD0 – AS PD1 PD2 PC0 PC1 PC2 PC3 PC4 PC5 PC6 PC7 29 28 27 25 24 23 22 21 7 6 5 4 3 2 52 51 20 19 18 17 14 13 12 11 RESET 3 5 E 4 AS 6 R/W RESET AI02884C 51/111 PSD813F1A I/O PORTS There are four programmable I/O ports: Ports A, B, C, and D. Each of the ports is eight bits except Port D, which is 3 bits. Each port pin is individually user configurable, thus allowing multiple functions per port. The ports are configured using PSDsoft Express Configuration or by the MCU writing to onchip registers in the CSIOP address space. The topics discussed in this section are: ■ General Port architecture ■ Port Operating Modes ■ Port Configuration Registers (PCR) ■ Port Data Registers ■ Individual Port Functionality. General Port Architecture The general architecture of the I/O Port is shown in Figure 27., page 53. Individual Port architectures are shown in Figure 29., page 60 to Figure 32., page 63. In general, once the purpose for a port pin has been defined, that pin will no longer be available for other purposes. Exceptions will be noted. As shown in Figure 27., page 53, the ports contain an output multiplexer whose selects are driven by the configuration bits in the Control Registers (Ports A and B only) and PSDsoft Express Configuration. Inputs to the multiplexer include the following: ■ Output data from the Data Out Register ■ Latched address outputs ■ CPLD Macrocell output ■ External Chip Select from CPLD. The Port Data Buffer (PDB) is a tri-state buffer that allows only one source at a time to be read. The PDB is connected to the Internal Data Bus for feedback and can be read by the microcontroller. The Data Out and Macrocell outputs, Direction and Control Registers, and port pin input are all connected to the PDB. 52/111 The Port pin’s tri-state output driver enable is controlled by a two input OR gate whose inputs come from the CPLD AND array enable product term and the Direction Register. If the enable product term of any of the array outputs are not defined and that port pin is not defined as a CPLD output in the PSDabel file, then the Direction Register has sole control of the buffer that drives the port pin. The contents of these registers can be altered by the microcontroller. The PDB feedback path allows the microcontroller to check the contents of the registers. Ports A, B, and C have embedded Input Macrocells (IMCs). The IMCs can be configured as latches, registers, or direct inputs to the PLDs. The latches and registers are clocked by the address strobe (AS/ALE) or a product term from the PLD AND array. The outputs from the IMCs drive the PLD input bus and can be read by the microcontroller. See the section entitled Input Macrocell, page 42. Port Operating Modes The I/O Ports have several modes of operation. Some modes can be defined using PSDabel, some by the microcontroller writing to the Control Registers in CSIOP space, and some by both. The modes that can only be defined using PSDsoft Express must be programmed into the device and cannot be changed unless the device is reprogrammed. The modes that can be changed by the microcontroller can be done so dynamically at runtime. The PLD I/O, Data Port, Address Input, and Peripheral I/O modes are the only modes that must be defined before programming the device. All other modes can be changed by the microcontroller at run-time. Table 19., page 54 summarizes which modes are available on each port. Table 22., page 57 shows how and where the different modes are configured. Each of the port operating modes are described in the following subsections. PSD813F1A Figure 27. General I/O Port Architecture DATA OUT REG. D Q D Q DATA OUT WR ADDRESS ALE ADDRESS PORT PIN OUTPUT MUX G MACROCELL OUTPUTS EXT CS INTERNAL DATA BUS READ MUX P OUTPUT SELECT D DATA IN B CONTROL REG. D Q ENABLE OUT WR DIR REG. D Q WR ENABLE PRODUCT TERM (.OE) INPUT MACROCELL CPLD-INPUT AI02885 53/111 PSD813F1A MCU I/O Mode In the MCU I/O Mode, the microcontroller uses the PSD ports to expand its own I/O ports. By setting up the CSIOP space, the ports on the PSD are mapped into the microcontroller address space. The addresses of the ports are listed in Table 6., page 17. A port pin can be put into MCU I/O mode by writing a ‘0’ to the corresponding bit in the Control Register. The MCU I/O direction may be changed by writing to the corresponding bit in the Direction Register, or by the output enable product term. See the section entitled Peripheral I/O Mode, page 56. When the pin is configured as an output, the content of the Data Out Register drives the pin. When configured as an input, the microcontroller can read the port input through the Data In buffer. See Figure 27., page 53. Ports C and D do not have Control Registers, and are in MCU I/O mode by default. They can be used for PLD I/O if equation are written for them in PSDabel. PLD I/O Mode The PLD I/O Mode uses a port as an input to the CPLD’s Input Macrocells, and/or as an output from the CPLD’s Output Macrocells. The output can be tri-stated with a control signal. This output enable control signal can be defined by a product term from the PLD, or by setting the corresponding bit in the Direction Register to ‘0.’ The corresponding bit in the Direction Register must not be set to ‘1’ if the pin is defined as a PLD input pin in PSDabel. The PLD I/O Mode is specified in PSDabel by declaring the port pins, and then writing an equation assigning the PLD I/O to a port. Address Out Mode For microcontrollers with a multiplexed address/ data bus, Address Out Mode can be used to drive latched addresses onto the port pins. These port pins can, in turn, drive external devices. Either the output enable or the corresponding bits of both the Direction Register and Control Register must be set to a ‘1’ for pins to use Address Out Mode. This must be done by the MCU at run-time. See Table 21., page 55 for the address output pin assignments on Ports A and B for various MCUs. For non-multiplexed 8-bit bus mode, address lines A7-A0 are available to Port B in Address Out Mode. Note: do not drive address lines with Address Out Mode to an external memory device if it is intended for the MCU to boot from the external device. The MCU must first boot from PSD memory so the Direction and Control register bits can be set. Table 19. Port Operating Modes Port Mode Port A Port B Port C Port D MCU I/O Yes Yes Yes Yes PLD I/O McellAB Outputs McellBC Outputs Additional Ext. CS Outputs PLD Inputs Yes No No Yes Yes Yes No Yes No Yes No Yes No No Yes Yes Address Out Yes (A7-A0 Yes (A7-A0) or (A15-A8) No No Address In Yes Yes Yes Yes Data Port Yes (D7-D0) No No No Peripheral I/O Yes No No No JTAG ISP No No Yes1 No Note: 1. Can be multiplexed with other I/O functions. 54/111 PSD813F1A Table 20. Port Operating Mode Settings Defined in PSDabel Mode Defined in PSD Configuration Control Register Setting VM Register Setting Direction Register Setting JTAG Enable MCU I/O Declare pins only N/A1 0 1 = output, 0 = input N/A (Note 2) N/A PLD I/O Logic equations N/A N/A (Note 2) N/A N/A Data Port (Port A) N/A Specify bus type N/A N/A N/A N/A Address Out (Port A,B) Declare pins only N/A 1 1 (Note 2) N/A N/A Address In (Port A,B,C,D) Logic equation for Input Macrocells N/A N/A N/A N/A N/A Peripheral I/O (Port A) Logic equations (PSEL0 & 1) N/A N/A N/A PIO bit = 1 N/A JTAG ISP (Note 3) JTAGSEL JTAG Configuration N/A N/A N/A JTAG_Enable Note: 1. N/A = Not Applicable 2. The direction of the Port A,B,C, and D pins are controlled by the Direction Register ORed with the individual output enable product term (.oe) from the CPLD AND Array. 3. Any of these three methods enables the JTAG pins on Port C. Table 21. I/O Port Latched Address Output Assignments MCU Port A (PA3-PA0) Port A (PA7-PA4) Port B (PB3-PB0) Port B (PB7-PB4) 8051XA (8-Bit) N/A1 Address a7-a4 Address A11-A8 N/A 80C251 (Page Mode) N/A N/A Address A11-A8 Address A15-A12 All Other 8-Bit Multiplexed Address A3-A0 Address A7-A4 Address A3-A0 Address A7-A4 8-Bit Non-Multiplexed Bus N/A N/A Address A3-A0 Address A7-A4 Note: 1. N/A = Not Applicable. 55/111 PSD813F1A Address In Mode For microcontrollers that have more than 16 address lines, the higher addresses can be connected to Port A, B, C, and D. The address input can be latched in the Input Macrocell by the address strobe (ALE/AS). Any input that is included in the DPLD equations for the PLD’s Flash, EEPROM, or SRAM is considered to be an address input. Data Port Mode Port A can be used as a data bus port for a microcontroller with a non-multiplexed address/data bus. The Data Port is connected to the data bus of the microcontroller. The general I/O functions are disabled in Port A if the port is configured as a Data Port. Peripheral I/O Mode Peripheral I/O Mode can be used to interface with external peripherals. In this mode, all of Port A serves as a tri-stateable, bi-directional data buffer for the microcontroller. Peripheral I/O Mode is enabled by setting Bit 7 of the VM Register to a ‘1.’ Figure 28 shows how Port A acts as a bi-directional buffer for the microcontroller data bus if Peripheral I/O Mode is enabled. An equation for PSEL0 and/or PSEL1 must be written in PSDabel. The buffer is tri-stated when PSEL 0 or PSEL1 is not active. Figure 28. Peripheral I/O Mode RD PSEL0 PSEL PSEL1 VM REGISTER BIT 7 D0 - D7 DATA BUS PA0 - PA7 WR AI02886 56/111 PSD813F1A JTAG In-System Programming (ISP) Port C is JTAG compliant, and can be used for InSystem Programming (ISP). You can multiplex JTAG operations with other functions on Port C because ISP is not performed during normal system operation. For more information on the JTAG Port, see the section entitled PROGRAMMING INCIRCUIT USING THE JTAG SERIAL INTERFACE, page 71. Port Configuration Registers (PCR) Each Port has a set of Port Configuration Registers (PCR) used for configuration. The contents of the registers can be accessed by the MCU through normal READ/WRITE bus cycles at the addresses given in Table 6., page 17. The addresses in Table 6., page 17 are the offsets in hexadecimal from the base of the CSIOP register. The pins of a port are individually configurable and each bit in the register controls its respective pin. For example, Bit 0 in a register refers to Bit 0 of its port. The three Port Configuration Registers (PCR), shown in Table 22, are used for setting the Port configurations. The default Power-up state for each register in Table 22 is 00h. Control Register Any bit reset to ‘0’ in the Control Register sets the corresponding port pin to MCU I/O Mode, and a ‘1’ sets it to Address Out Mode. The default mode is MCU I/O. Only Ports A and B have an associated Control Register. Table 22. Port Configuration Registers (PCR) Register Name Port MCU Access Control A,B WRITE/READ Direction A,B,C,D WRITE/READ Drive Select1 A,B,C,D WRITE/READ Note: 1. See Table 26., page 58 for Drive Register bit definition. 57/111 PSD813F1A Direction Register The Direction Register, in conjunction with the output enable (except for Port D), controls the direction of data flow in the I/O Ports. Any bit set to ‘1’ in the Direction Register will cause the corresponding pin to be an output, and any bit set to ‘0’ will cause it to be an input. The default mode for all port pins is input. Figure 29., page 60 and Figure 30., page 61 show the Port Architecture diagrams for Ports A/B and C, respectively. The direction of data flow for Ports A, B, and C are controlled not only by the direction register, but also by the output enable product term from the PLD AND array. If the output enable product term is not active, the Direction Register has sole control of a given pin’s direction. An example of a configuration for a port with the three least significant bits set to output and the remainder set to input is shown in Table 25. Since Port D only contains three pins (shown in Figure 32., page 63), the Direction Register for Port D has only the three least significant bits active. Drive Select Register The Drive Select Register configures the pin driver as Open Drain or CMOS for some port pins, and controls the slew rate for the other port pins. An external pull-up resistor should be used for pins configured as Open Drain. A pin can be configured as Open Drain if its corresponding bit in the Drive Select Register is set to a ‘1.’ The default pin drive is CMOS. Aside: the slew rate is a measurement of the rise and fall times of an output. A higher slew rate means a faster output response and may create more electrical noise. A pin operates in a high slew rate when the corresponding bit in the Drive Register is set to ‘1.’ The default rate is slow slew. Table 26 shows the Drive Register for Ports A, B, C, and D. It summarizes which pins can be configured as Open Drain outputs and which pins the slew rate can be set for. Table 23. Port Pin Direction Control, Output Enable P.T. Not Defined Direction Register Bit Port Pin Mode 0 Input 1 Output Table 24. Port Pin Direction Control, Output Enable P.T. Defined Direction Register Bit Output Enable P.T. Port Pin Mode 0 0 Input 0 1 Output 1 0 Output 1 1 Output Table 25. Port Direction Assignment Example Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 0 0 0 0 0 1 1 1 Table 26. Drive Register Pin Assignment Drive Register Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Port A Open Drain Open Drain Open Drain Open Drain Slew Rate Slew Rate Slew Rate Slew Rate Port B Open Drain Open Drain Open Drain Open Drain Slew Rate Slew Rate Slew Rate Slew Rate Port C Open Drain Open Drain Open Drain Open Drain Open Drain Open Drain Open Drain Open Drain Port D NA1 NA1 NA1 NA1 NA1 Slew Rate Slew Rate Slew Rate Note: 1. NA = Not Applicable. 58/111 PSD813F1A Port Data Registers The Port Data Registers, shown in Table 27, are used by the MCU to write data to or read data from the ports. Table 27 shows the register name, the ports having each register type, and MCU access for each register type. The registers are described below. Data In Port pins are connected directly to the Data In buffer. In MCU I/O input mode, the pin input is read through the Data In buffer. Data Out Register Stores output data written by the MCU in the MCU I/O output mode. The contents of the Register are driven out to the pins if the Direction Register or the output enable product term is set to ‘1.’ The contents of the register can also be read back by the MCU. Output Macrocells (OMC) The CPLD Output Macrocells (OMC) occupy a location in the microcontroller’s address space. The microcontroller can read the output of the OMCs. If the Mask Macrocell Register bits are not set, writing to the Macrocell loads data to the Macrocell flip flops. See the section entitled PLD’S, page 34. Mask Macrocell Register Each Mask Register bit corresponds to an OMC flip flop. When the Mask Register bit is set to a “1”, loading data into the OMC flip flop is blocked. The default value is “0” or unblocked. Input Macrocells (IMC) The IMCs can be used to latch or store external inputs. The outputs of the IMCs are routed to the PLD input bus, and can be read by the microcontroller. Refer to the section entitled PLD’S, page 34 for a detailed description. Table 27. Port Data Registers Register Name Port MCU Access Data In A,B,C,D READ – input on pin Data Out A,B,C,D WRITE/READ Output Macrocell A,B,C READ – outputs of macrocells WRITE – loading macrocell flip-flop Mask Macrocell A,B,C WRITE/READ – prevents loading into a given macrocell Input Macrocell A,B,C READ – outputs of the Input Macrocells Enable Out A,B,C READ – the output enable control of the port driver 59/111 PSD813F1A Enable Out The Enable Out register can be read by the microcontroller. It contains the output enable values for a given port. A ‘1’ indicates the driver is in output mode. A ‘0’ indicates the driver is in tri-state and the pin is in input mode. Ports A and B – Functionality and Structure Ports A and B have similar functionality and structure, as shown in Figure 29. The two ports can be configured to perform one or more of the following functions: ■ MCU I/O Mode ■ CPLD Output – Macrocells McellAB7McellAB0 can be connected to Port A or Port B. McellBC7-McellBC0 can be connected to Port B or Port C. ■ ■ ■ ■ ■ ■ ■ CPLD Input – Via the Input Macrocells (IMC). Latched Address output – Provide latched address output as per Table 21., page 55. Address In – Additional high address inputs using the Input Macrocells (IMC). Open Drain/Slew Rate – pins PA3-PA0 and PB3-PB0 can be configured to fast slew rate, pins PA7-PA4 and PB7-PB4 can be configured to Open Drain Mode. Data Port – Port A to D7-D0 for 8 bit nonmultiplexed bus Multiplexed Address/Data port for certain types of MCU bus interfaces. Peripheral Mode – Port A only Figure 29. Port A and Port B Structure DATA OUT REG. D Q D Q DATA OUT WR ADDRESS ALE PORT A OR B PIN ADDRESS A[ 7:0] OR A[15:8] G OUTPUT MUX MACROCELL OUTPUTS INTERNAL DATA BUS READ MUX P OUTPUT SELECT D DATA IN B CONTROL REG. D Q ENABLE OUT WR DIR REG. D Q WR ENABLE PRODUCT TERM (.OE) INPUT MACROCELL CPLD - INPUT AI02887 60/111 PSD813F1A Port C – Functionality and Structure Port C can be configured to perform one or more of the following functions (see Figure 30): ■ MCU I/O Mode ■ CPLD Output – McellBC7-McellBC0 outputs can be connected to Port B or Port C. ■ CPLD Input – via the Input Macrocells (IMC) ■ Address In – Additional high address inputs using the Input Macrocells (IMC). ■ In-System Programming (ISP) – JTAG port can be enabled for programming/erase of the PSD device. (See the section entitled PROGRAMMING IN-CIRCUIT USING THE JTAG SERIAL INTERFACE, page 71, for more information on JTAG programming.) ■ Open Drain – Port C pins can be configured in Open Drain Mode Port C does not support Address Out mode, and therefore no Control Register is required. Pin PC7 may be configured as the DBE input in certain MCU interfaces. Figure 30. Port C Structure DATA OUT REG. D DATA OUT Q WR 1 SPECIAL FUNCTION PORT C PIN OUTPUT MUX MCELLBC[ 7:0] INTERNAL DATA BUS READ MUX P OUTPUT SELECT D DATA IN B ENABLE OUT DIR REG. D Q WR ENABLE PRODUCT TERM (.OE) INPUT MACROCELL CPLD - INPUT 1 SPECIAL FUNCTION CONFIGURATION AI02888B BIT Note: 1. ISP. 61/111 PSD813F1A Port D – Functionality and Structure Port D has three I/O pins. See Figure 31 and Figure 32., page 63. This port does not support Address Out mode, and therefore no Control Register is required. Port D can be configured to perform one or more of the following functions: ■ MCU I/O Mode ■ CPLD Output – External Chip Select (ECS0ECS2) ■ CPLD Input – direct input to the CPLD, no Input Macrocells (IMC) ■ Slew rate – pins can be set up for fast slew rate Port D pins can be configured in PSDsoft Express as input pins for other dedicated functions: ■ PD0 – ALE, as address strobe input ■ PD1 – CLKIN, as clock input to the macrocells flip-flops and APD counter ■ PD2 – CSI, as active Low chip select input. A High input will disable the Flash memory, EEPROM, SRAM and CSIOP. Figure 31. Port D Structure DATA OUT REG. DATA OUT D Q WR PORT D PIN OUTPUT MUX ECS[ 2:0] INTERNAL DATA BUS READ MUX OUTPUT SELECT P D DATA IN B ENABLE PRODUCT TERM (.OE) DIR REG. D WR 62/111 Q CPLD-INPUT AI02889 PSD813F1A External Chip Select The CPLD also provides three External Chip Select (ECS0-ECS2) outputs on Port D pins that can be used to select external devices. Each External Chip Select (ECS0-ECS2) consists of one product term that can be configured active High or Low. The output enable of the pin is controlled by either the output enable product term or the Direction Register. (See Figure 32.) Figure 32. Port D External Chip Select Signals ENABLE (.OE) CPLD AND ARRAY PLD INPUT BUS PT0 DIRECTION REGISTER PD0 PIN ECS0 POLARITY BIT ENABLE (.OE) PT1 DIRECTION REGISTER PD1 PIN ECS1 POLARITY BIT ENABLE (.OE) PT2 DIRECTION REGISTER ECS2 POLARITY BIT PD2 PIN AI02890 63/111 PSD813F1A POWER MANAGEMENT The PSD offers configurable power saving options. These options may be used individually or in combinations, as follows: – All memory types in a PSD (Flash, EEPROM, and SRAM) are built with Zero-Power technology. In addition to using special silicon design methodology, Zero-Power technology puts the memories into standby mode when address/data inputs are not changing (zero DC current). As soon as a transition occurs on an input, the affected memory “wakes up”, changes and latches its outputs, then goes back to standby. The designer does not have to do anything special to achieve memory standby mode when no inputs are changing— it happens automatically. The PLD sections can also achieve standby mode when its inputs are not changing, as described in the section entitled PLD Power Management, page 66. – Like the Zero-Power feature, the Automatic Power Down (APD) logic allows the PSD to reduce to standby current automatically. The APD will block MCU address/data signals from reaching the memories and PLDs. This feature is available on all PSD devices. The APD Unit is described in more detail in the sections entitled Automatic Power-down (APD) Unit and Power-down Mode, page 65. Built in logic will monitor the address strobe of the MCU for activity. If there is no activity for a certain time period (MCU is asleep), the APD logic initiates Power Down Mode (if enabled). Once in Power Down Mode, all address/data signals are blocked from reaching PSD memories and PLDs, and the memories are deselected internally. This allows the memories and PLDs to remain in standby mode even if the address/data lines are 64/111 – – changing state externally (noise, other devices on the MCU bus, etc.). Keep in mind that any unblocked PLD input signals that are changing states keeps the PLD out of standby mode, but not the memories. The PSD Chip Select Input (CSI) on all families can be used to disable the internal memories, placing them in standby mode even if inputs are changing. This feature does not block any internal signals or disable the PLDs. This is a good alternative to using the APD logic, especially if your MCU has a chip select output. There is a slight penalty in memory access time when the CSI signal makes its initial transition from deselected to selected. The PMMR registers can be written by the MCU at run-time to manage power. PSD supports “blocking bits” in these registers that are set to block designated signals from reaching both PLDs. Current consumption of the PLDs is directly related to the composite frequency of the changes on their inputs (see Figure 36., page 73 and Figure 37., page 73). Significant power savings can be achieved by blocking signals that are not used in DPLD or CPLD logic equations. The PSD has a Turbo Bit in the PMMR0 register. This bit can be set to disable the Turbo Mode feature (default is Turbo Mode on). While Turbo Mode is disabled, the PLDs can achieve standby current when no PLD inputs are changing (zero DC current). Even when inputs do change, significant power can be saved at lower frequencies (AC current), compared to when Turbo Mode is enabled. When the Turbo Mode is enabled, there is a significant DC current component and the AC component is higher. PSD813F1A Automatic Power-down (APD) Unit and Power-down Mode The APD Unit, shown in Figure 33, puts the PSD setting the appropriate bits in the PMMR into Power-down mode by monitoring the activity registers. The blocked signals include MCU of Address Strobe (ALE/AS, PD0). If the APD Unit control signals and the common clock is enabled, as soon as activity on Address Strobe (CLKIN). Note that blocking CLKIN from the (ALE/AS, PD0) stops, a four bit counter starts PLDs will not block CLKIN from the APD unit. counting. If Address Strobe (ALE/AS, PD0) re– All PSD memories enter standby mode and mains inactive for fifteen clock periods of CLKIN are drawing standby current. However, the (PD1), the Power-down (PDN) signal becomes acPLDs and I/O ports do not go into standby tive, and the PSD enters Power-down mode, as mode because you don’t want to have to wait discussed next. for the logic and I/O to “wake-up” before their Power-down Mode outputs can change. See Table 28 for Power Down Mode effects on PSD ports. By default, if you enable the PSD APD unit, Power Down Mode is automatically enabled. The device – Typical standby current are of the order of the will enter Power Down Mode if the address strobe microampere (see Table 29). These standby (ALE/AS) remains inactive for fifteen CLKIN (pin current values assume that there are no PD1) clock periods. transitions on any PLD input. The following should be kept in mind when the PSD is in Power Down Mode: Table 28. Power-down Mode’s Effect on Ports – If the address strobe starts pulsing again, the Port Function Pin Level PSD will return to normal operation. The PSD MCU I/O No Change will also return to normal operation if either the CSI input returns low or the Reset input PLD Out No Change returns high. Address Out Undefined – The MCU address/data bus is blocked from all memories and PLDs. Data Port Tri-State – Various signals can be blocked (prior to Power Peripheral I/O Tri-State Down Mode) from entering the PLDs by Figure 33. APD Unit APD EN PMMR0 BIT 1=1 TRANSITION DETECTION DISABLE BUS INTERFACE ALE CLR PD EEPROM SELECT APD COUNTER RESET FLASH SELECT EDGE DETECT CSI PD PLD CLKIN SRAM SELECT POWER DOWN (PDN) SELECT DISABLE FLASH/EEPROM/SRAM AI02891 Table 29. PSD Timing and Standby Current during Power-down Mode Mode Power-down PLD Propagation Delay Memory Access Time Access Recovery Time to Normal Access Normal tPD(1) No Access tLVDV Typical Standby Current 5V VCC 3V VCC 50µA(2) 25µA(2) Note: 1. Power-down does not affect the operation of the PLD. The PLD operation in this mode is based only on the Turbo bit. 2. Typical current consumption assuming no PLD inputs are changing state and the PLD Turbo bit is 0. 65/111 PSD813F1A For Users of the HC11 (or compatible) The HC11 turns off its E clock when it sleeps. Therefore, if you are using an HC11 (or compatible) in your design, and you wish to use the Power-down mode, you must not connect the E clock to CLKIN (PD1). You should instead connect an independent clock signal to the CLKIN input (PD1). The clock frequency must be less than 15 times the frequency of AS. The reason for this is that if the frequency is greater than 15 times the frequency of AS, the PSD will keep going into Power-down mode. Other Power Saving Options The PSD offers other reduced power saving options that are independent of the Power-down mode. Except for the SRAM Standby and Chip Select Input (CSI, PD2) features, they are enabled by setting bits in the PMMR0 and PMMR2 registers. PLD Power Management The power and speed of the PLDs are controlled by the Turbo bit (bit 3) in the PMMR0. By setting the bit to ‘1’, the Turbo mode is disabled and the PLDs consume Zero Power current when the inputs are not switching for an extended time of 70ns. The propagation delay time will be increased by 10ns after the Turbo bit is set to ‘1’ (turned off) when the inputs change at a composite frequency of less than 15 MHz. When the Turbo bit is set to a ‘0’ (turned on), the PLDs run at full power and speed. The Turbo bit affects the PLD’s D.C. power, AC power, and propagation delay. Note: Blocking MCU control signals with PMMR2 bits can further reduce PLD AC power consumption. PSD Chip Select Input (CSI, PD2) Pin PD2 of Port D can be configured in PSDsoft Express as the CSI input. When low, the signal selects and enables the internal Flash, EEPROM, SRAM, and I/O for READ or WRITE operations involving the PSD. A high on the CSI pin will disable the Flash memory, EEPROM, and SRAM, and reduce the PSD power consumption. However, the 66/111 PLD and I/O pins remain operational when CSI is High. Note: There may be a timing penalty when using the CSI pin depending on the speed grade of the PSD that you are using. See the timing parameter tSLQV in Table 63., page 95 or Table 64., page 95. Input Clock The PSD provides the option to turn off the CLKIN input to the PLD to save AC power consumption. The CLKIN is an input to the PLD AND array and the Output Macrocells. During Power Down Mode, or, if the CLKIN input is not being used as part of the PLD logic equation, the clock should be disabled to save AC power. The CLKIN will be disconnected from the PLD AND array or the Macrocells by setting bits 4 or 5 to a ‘1’ in PMMR0. Figure 34. Enable Power-down Flow Chart RESET Enable APD Set PMMR0 Bit 1 = 1 OPTIONAL Disable desired inputs to PLD by setting PMMR0 bits 4 and 5 and PMMR2 bits 2 through 6. No ALE/AS idle for 15 CLKIN clocks? Yes PSD in Power Down Mode AI02892 PSD813F1A Table 30. Power Management Mode Registers PMMR0 (Note 1) Bit 0 X Bit 1 APD Enable 0 Not used, and should be set to zero. 0 = off Automatic Power-down (APD) is disabled. 1 = on Automatic Power-down (APD) is enabled. Bit 2 X Bit 3 PLD Turbo 0 Not used, and should be set to zero. 0 = on PLD Turbo mode is on 1 = off PLD Turbo mode is off, saving power. 0 = on Bit 4 PLD Array clk CLKIN (PD1) input to the PLD AND Array is connected. Every change of CLKIN (PD1) Powers-up the PLD when Turbo bit is 0. 1 = off CLKIN (PD1) input to PLD AND Array is disconnected, saving power. 0 = on CLKIN (PD1) input to the PLD macrocells is connected. Bit 5 PLD MCell clk 1 = off CLKIN (PD1) input to PLD macrocells is disconnected, saving power. Bit 6 X 0 Not used, and should be set to zero. Bit 7 X 0 Not used, and should be set to zero. Note: 1. The bits of this register are cleared to zero following Power-up. Subsequent Reset (RESET) pulses do not clear the registers. Table 31. Power Management Mode Registers PMMR2 (Note 1) Bit 0 X 0 Not used, and should be set to zero. Bit 1 X 0 Not used, and should be set to zero. PLD Array CNTL0 0 = on Cntl0 input to the PLD AND Array is connected. Bit 2 PLD Array CNTL1 0 = on Cntl1 input to the PLD AND Array is connected. PLD Array CNTL2 0 = on Cntl2 input to the PLD AND Array is connected. PLD Array ALE 0 = on ALE input to the PLD AND Array is connected. PLD Array DBE 0 = on DBE input to the PLD AND Array is connected. X 0 Bit 3 Bit 4 Bit 5 Bit 6 Bit 7 1 = off Cntl0 input to PLD AND Array is disconnected, saving power. 1 = off Cntl1 input to PLD AND Array is disconnected, saving power. 1 = off Cntl2 input to PLD AND Array is disconnected, saving power. 1 = off ALE input to PLD AND Array is disconnected, saving power. 1 = off DBE input to PLD AND Array is disconnected, saving power. Not used, and should be set to zero. Note: 1. The bits of this register are cleared to zero following Power-up. Subsequent Reset (RESET) pulses do not clear the registers. 67/111 PSD813F1A Input Control Signals The PSD provides the option to turn off the input control signals (CNTL0, CNTL1, CNTL2, ALE, and DBE) to the PLD to save AC power consumption. These control signals are inputs to the PLD AND array. During Power Down Mode, or, if any of them are not being used as part of the PLD logic equation, these control signals should be disabled to save AC power. They will be disconnected from the PLD AND array by setting bits 2, 3, 4, 5, and 6 to a ‘1’ in the PMMR2. Table 32. APD Counter Operation APD Enable Bit ALE PD Polarity ALE Level 0 X X Not Counting 1 X Pulsing Not Counting 1 1 1 Counting (Generates PDN after 15 Clocks) 1 0 0 Counting (Generates PDN after 15 Clocks) 68/111 APD Counter PSD813F1A RESET TIMING AND DEVICE STATUS AT RESET Power-On Reset Upon Power-up, the PSD requires a Reset (RESET) pulse of duration tNLNH-PO (See Tables 67 and 68 for values) after VCC is steady. During this period, the device loads internal configurations, clears some of the registers and sets the Flash memory or EEPROM into Operating mode. After the rising edge of Reset (RESET), the PSD remains in the Reset mode for an additional period, tOPR (See Tables 67 and 68 for values), before the first memory access is allowed. The PSD Flash or EEPROM memory is reset to the READ mode upon power up. The FSi and EESi select signals along with the write strobe signal must be in the false state during power-up reset for maximum security of the data contents and to remove the possibility of a byte being written on the first edge of a write strobe signal. The PSD automatically prevents write strobes from reaching the EEPROM memory array for about 5ms (tEEHWL). Any Flash memory WRITE cycle initiation is prevented automatically when VCC is below VLKO. Warm Reset Once the device is up and running, the device can be reset with a much shorter pulse of tNLNH (See Tables 67 and 68 for values). The same tOPR time is needed before the device is operational after warm reset. Figure 35 shows the timing of the power on and warm reset. I/O Pin, Register and PLD Status at Reset Table 33., page 70 shows the I/O pin, register and PLD status during Power On Reset, Warm reset and Power-down mode. PLD outputs are always valid during warm reset, and they are valid in Power On Reset once the internal PSD Configuration bits are loaded. This loading of PSD is completed typically long before the VCC ramps up to operating level. Once the PLD is active, the state of the outputs are determined by the PSDabel equations. Figure 35. Reset (RESET) Timing VCC VCC(min) tNLNH-PO Power-On Reset tOPR tNLNH tNLNH-A tOPR Warm Reset RESET AI02866b 69/111 PSD813F1A Table 33. Status During Power-On Reset, Warm Reset and Power-down Mode Port Configuration Power-On Reset Warm Reset Power-down Mode MCU I/O Input mode Input mode Unchanged PLD Output Valid after internal PSD configuration bits are loaded Valid Depends on inputs to PLD (addresses are blocked in PD mode) Address Out Tri-stated Tri-stated Not defined Data Port Tri-stated Tri-stated Tri-stated Peripheral I/O Tri-stated Tri-stated Tri-stated Register Power-On Reset Warm Reset Power-down Mode PMMR0 and PMMR2 Cleared to ‘0’ Unchanged Unchanged Macrocells flip-flop status Cleared to ‘0’ by internal Power-On Reset Depends on .re and .pr equations Depends on .re and .pr equations VM Register1 Initialized, based on the selection in PSDsoft Express Configuration menu Initialized, based on the selection in PSDsoft Express Configuration menu Unchanged All other registers Cleared to ‘0’ Cleared to ‘0’ Unchanged Note: 1. The SR_cod and PeriphMode bits in the VM Register are always cleared to ‘0’ on Power-On Reset or Warm Reset. 70/111 PSD813F1A PROGRAMMING IN-CIRCUIT USING THE JTAG SERIAL INTERFACE The JTAG interface on the PSD can be enabled on Port C (see Table 34., page 72). All memory (Flash and EEPROM), PLD logic, and PSD configuration bits may be programmed through the JTAG interface. A blank part can be mounted on a printed circuit board and programmed using JTAG. The standard JTAG signals (IEEE 1149.1) are TMS, TCK, TDI, and TDO. Two additional signals, TSTAT and TERR, are optional JTAG extensions used to speed up program and erase operations. Note: By default, on a blank PSD (as shipped from factory or after erasure), four pins on Port C are enabled for the basic JTAG signals TMS, TCK, TDI, and TDO. Standard JTAG Signals The standard JTAG signals (TMS, TCK, TDI, and TDO) can be enabled by any of three different conditions that are logically ORed. When enabled, TDI, TDO, TCK, and TMS are inputs, waiting for a serial command from an external JTAG controller device (such as FlashLink or Automated Test Equipment). When the enabling command is received from the external JTAG controller, TDO becomes an output and the JTAG channel is fully functional inside the PSD. The same command that enables the JTAG channel may optionally enable the two additional JTAG pins, TSTAT and TERR. The following symbolic logic equation specifies the conditions enabling the four basic JTAG pins (TMS, TCK, TDI, and TDO) on their respective Port C pins. For purposes of discussion, the logic label JTAG_ON will be used. When JTAG_ON is true, the four pins are enabled for JTAG. When JTAG_ON is false, the four pins can be used for general PSD I/O. JTAG_ON = PSDsoft_enabled + /* An NVM configuration bit inside the PSD is set by the designer in the PSDsoft Express Configuration utility. This dedicates the pins for JTAG at all times (compliant with IEEE 1149.1) */ Microcontroller_enabled + /* The microcontroller can set a bit at runtime by writing to the PSD register, JTAG Enable. This register is located at address CSIOP + offset C7h. Setting the JTAG_ENABLE bit in this register will enable the pins for JTAG use. This bit is cleared by a PSD reset or the microcontroller. See Table 35., page 72 for bit definition. */ PSD_product_term_enabled; /* A dedicated product term (PT) inside the PSD can be used to enable the JTAG pins. This PT has the reserved name JTAGSEL. Once defined as a node in PSDabel, the designer can write an equation for JTAGSEL. This method is used when the Port C JTAG pins are multiplexed with other I/O signals. It is recommended to logically tie the node JTAGSEL to the JEN\ signal on the Flashlink cable when multiplexing JTAG signals. (AN1153) The PSD supports JTAG In-System-Configuration (ISC) commands, but not Boundary Scan. A definition of these JTAG-ISC commands and sequences are defined in a supplemental document available from ST. ST’s PSDsoft Express software tool and FlashLink JTAG programming cable implement these JTAG-ISC commands. This document is needed only as a reference for designers who use a FlashLink to program their PSD. 71/111 PSD813F1A JTAG Extensions TSTAT and TERR are two JTAG extension signals enabled by an “ISC_ENABLE” command received over the four standard JTAG pins (TMS, TCK, TDI, and TDO). They are used to speed programming and erase functions by indicating status on PSD pins instead of having to scan the status out serially using the standard JTAG channel. TERR will indicate if an error has occurred when erasing a sector or programming a byte in Flash memory. This signal will go Low (active) when an error condition occurs, and stay Low until an “ISC_CLEAR” command is executed or a chip reset pulse is received after an “ISC-DISABLE” command. TERR does not apply to EEPROM. TSTAT behaves the same as the Ready/Busy signal described in the section entitled Ready/Busy Pin (PC3), page 18. TSTAT will be High when the PSD device is in READ mode (Flash memory and EEPROM contents can be read). TSTAT will be Low when Flash memory programming or erase cycles are in progress, and also when data is being written to EEPROM. TSTAT and TERR can be configured as opendrain type signals during an “ISC_ENABLE” command. This facilitates a wired-OR connection of TSTAT signals from several PSD devices and a wired-OR connection of TERR signals from those same devices. This is useful when several PSD devices are “chained” together in a JTAG environment. Security, Flash memory and EEPROM Protection When the security bit is set, the device cannot be read on a device programmer or through the JTAG Port. When using the JTAG Port, only a full chip erase command is allowed. All other program/ erase/verify commands are blocked. Full chip erase returns the part to a non-secured blank state. The Security Bit can be set in PSDsoft Express Configuration. All Flash Memory and EEPROM sectors can individually be sector protected against erasures. The sector protect bits can be set in PSDsoft Express Configuration. Table 34. JTAG Port Signals Port C Pin JTAG Signals Description PC0 TMS Mode Select PC1 TCK Clock PC3 TSTAT Status PC4 TERR Error Flag PC5 TDI Serial Data In PC6 TDO Serial Data Out INITIAL DELIVERY STATE When delivered from ST, the PSD device has all bits in the memory and PLDs set to '1.' The PSD Configuration Register bits are set to '0.' The code, configuration, and PLD logic are loaded using the programming procedure. Information for programming the device is available directly from ST. Please contact your local sales representative. Table 35. JTAG Enable Register 0 = off JTAG port is disabled. Bit 0 JTAG_Enable 1 = on JTAG port is enabled. Bit 1 X 0 Not used, and should be set to zero. Bit 2 X 0 Not used, and should be set to zero. Bit 3 X 0 Not used, and should be set to zero. Bit 4 X 0 Not used, and should be set to zero. Bit 5 X 0 Not used, and should be set to zero. Bit 6 X 0 Not used, and should be set to zero. Bit 7 X 0 Not used, and should be set to zero. Note: The state of Reset (RESET) does not interrupt (or prevent) JTAG operations if the JTAG signals are dedicated by an NVM Configuration bit (via PSDsoft Express). However, Reset (RESET) prevents or interrupts JTAG operations if the JTAG enable register is used to enable the JTAG signals. 72/111 PSD813F1A AC/DC PARAMETERS The following are issues concerning the parameters presented: ■ In the DC specification the supply current is given for different modes of operation. Before calculating the total power consumption, determine the percentage of time that the PSD is in each mode. Also, the supply power is considerably different if the Turbo bit is ‘0.’ ■ The AC power component gives the PLD, EEPROM and SRAM mA/MHz specification. Figures 36 and 37 show the PLD mA/MHz as a function of the number of Product Terms (PT) used. ■ In the PLD timing parameters, add the required delay when Turbo bit is ‘0.' The following tables describe the AD and DC parameters of the PSD: ■ DC Electrical Specification ■ AC Timing Specification PLD Timing – Combinatorial Timing – Synchronous Clock Mode – Asynchronous Clock Mode – Input Macrocell Timing MCU Timing – READ Timing – WRITE Timing – Peripheral Mode Timing – Power-down and Reset Timing Figure 36. PLD ICC /Frequency Consumption (5V range) 110 VCC = 5V 100 90 80 (100 70 FF ) O URB O 60 (25% O T RB 50 ON TU ICC – (mA) %) ON BO TUR 40 30 F 20 O B UR OF PT 100% PT 25% T 10 0 0 5 10 15 20 25 HIGHEST COMPOSITE FREQUENCY AT PLD INPUTS (MHz) AI02894 Figure 37. PLD ICC /Frequency Consumption (3V range) 60 VCC = 3V BO TUR ) 100% ON ( 40 FF 30 O 5%) O (2 O ON RB TURB 20 TU ICC – (mA) 50 10 PT 100% PT 25% F O RB TU OF 0 0 5 10 15 20 HIGHEST COMPOSITE FREQUENCY AT PLD INPUTS (MHz) 25 AI03100 73/111 PSD813F1A Table 36. Example of PSD Typical Power Calculation at VCC = 5.0V (Turbo Mode On) Conditions Highest Composite PLD input frequency (Freq PLD) MCU ALE frequency (Freq ALE) = 8MHz = 4MHz % Flash memory Access = 80% % SRAM access = 15% % I/O access = 5% (no additional power above base) Operational Modes % Normal = 10% % Power-down Mode = 90% Number of product terms used (from fitter report) = 45 PT % of total product terms = 45/182 = 24.7% Turbo Mode = ON Calculation (using typical values) ICC total = Ipwrdown x %pwrdown + %normal x (ICC (ac) + ICC (dc)) = Ipwrdown x %pwrdown + % normal x (%flash x 2.5mA/MHz x Freq ALE + %SRAM x 1.5mA/MHz x Freq ALE + % PLD x 2mA/MHz x Freq PLD + #PT x 400µA/PT) = 50µA x 0.90 + 0.1 x (0.8 x 2.5mA/MHz x 4MHz + 0.15 x 1.5mA/MHz x 4MHz + 2mA/MHz x 8MHz + 45 x 0.4mA/PT) = 45µA + 0.1 x (8 + 0.9 + 16 + 18mA) = 45µA + 0.1 x 42.9 = 45µA + 4.29mA = 4.34mA This is the operating power with no EEPROM WRITE or Flash memory Erase cycles. Calculation is based on IOUT = 0mA. 74/111 PSD813F1A Table 37. Example of PSD Typical Power Calculation at VCC = 5.0V (Turbo Mode Off) Conditions Highest Composite PLD input frequency (Freq PLD) MCU ALE frequency (Freq ALE) = 8MHz = 4MHz % Flash memory Access = 80% % SRAM access = 15% % I/O access = 5% (no additional power above base) Operational Modes % Normal = 10% % Power-down Mode = 90% Number of product terms used (from fitter report) = 45 PT % of total product terms = 45/182 = 24.7% Turbo Mode = Off Calculation (using typical values) ICC total = Ipwrdown x %pwrdown + %normal x (ICC (ac) + ICC (dc)) = Ipwrdown x %pwrdown + % normal x (%flash x 2.5mA/MHz x Freq ALE + %SRAM x 1.5mA/MHz x Freq ALE + % PLD x (from graph using Freq PLD)) = 50µA x 0.90 + 0.1 x (0.8 x 2.5mA/MHz x 4MHz + 0.15 x 1.5mA/MHz x 4MHz + 24mA) = 45µA + 0.1 x (8 + 0.9 + 24) = 45µA + 0.1 x 32.9 = 45µA + 3.29mA = 3.34mA This is the operating power with no EEPROM WRITE or Flash memory Erase cycles. Calculation is based on IOUT = 0mA. 75/111 PSD813F1A MAXIMUM RATING Stressing the device above the rating listed in the Absolute Maximum Ratings” table may cause permanent damage to the device. These are stress ratings only and operation of the device at these or any other conditions above those indicated in the Operating sections of this specification is not im- plied. Exposure to Absolute Maximum Rating conditions for extended periods may affect device reliability. Refer also to the STMicroelectronics SURE Program and other relevant quality documents. Table 38. Absolute Maximum Ratings Symbol Parameter TSTG Storage Temperature TLEAD Lead Temperature during Soldering (20 seconds max.)1 Min. Max. Unit –65 125 °C 235 °C VIO Input and Output Voltage (Q = VOH or Hi-Z) –0.6 7.0 V VCC Supply Voltage –0.6 7.0 V VPP Device Programmer Supply Voltage –0.6 14.0 V VESD Electrostatic Discharge Voltage (Human Body model) 2 –2000 2000 V Note: 1. IPC/JEDEC J-STD-020A 2. JEDEC Std JESD22-A114A (C1=100 pF, R1=1500 Ω, R2=500 Ω) 76/111 PSD813F1A DC AND AC PARAMETERS This section summarizes the operating and measurement conditions, and the DC and AC characteristics of the device. The parameters in the DC and AC Characteristic tables that follow are derived from tests performed under the Measure- ment Conditions summarized in the relevant tables. Designers should check that the operating conditions in their circuit match the measurement conditions when relying on the quoted parameters. Table 39. Operating Conditions (5V devices) Symbol VCC Parameter Min. Max. Unit Supply Voltage 4.5 5.5 V Ambient Operating Temperature (Industrial) –40 85 °C 0 70 °C Min. Max. Unit Supply Voltage 3.0 3.6 V Ambient Operating Temperature (Industrial) –40 85 °C 0 70 °C TA Ambient Operating Temperature (Commercial) Table 40. Operating Conditions (3V devices) Symbol VCC Parameter TA Ambient Operating Temperature (Commercial) Table 41. AC Signal Letters for PLD Timings A Address Input C CEout Output D Input Data E E Input G Internal WDOG_ON signal I Interrupt Input L ALE Input N Reset Input or Output P Port Signal Output Q Output Data R WR, UDS, LDS, DS, IORD, PSEN Inputs S Chip Select Input T R/W Input W Internal PDN Signal M Output Macrocell Table 42. AC Signal Behavior Symbols for PLD Timings t Time L Logic Level Low or ALE H Logic Level High V Valid X No Longer a Valid Logic Level Z Float PW Pulse Width Note: Example: tAVLX = Time from Address Valid to ALE Invalid. Note: Example: tAVLX = Time from Address Valid to ALE Invalid. Table 43. AC Measurement Conditions Symbol CL Parameter Load Capacitance Min. Max. 30 Unit pF Note: 1. Output Hi-Z is defined as the point where data out is no longer driven. 77/111 PSD813F1A Table 44. Capacitance Symbol Parameter Test Condition Typ.2 Max. Unit CIN Input Capacitance (for input pins) VIN = 0V 4 6 pF COUT Output Capacitance (for input/ output pins) VOUT = 0V 8 12 CVPP Capacitance (for CNTL2/VPP) VPP = 0V 18 25 pF pF Note: 1. Sampled only, not 100% tested. 2. Typical values are for TA = 25°C and nominal supply voltages. Figure 38. AC Measurement I/O Waveform Figure 39. AC Measurement Load Circuit 2.01 V 3.0V 195 Ω Test Point 1.5V Device Under Test 0V CL = 30 pF (Including Scope and Jig Capacitance) AI03103b AI03104b Figure 40. Switching Waveforms – Key WAVEFORMS INPUTS OUTPUTS STEADY INPUT STEADY OUTPUT MAY CHANGE FROM HI TO LO WILL BE CHANGING FROM HI TO LO MAY CHANGE FROM LO TO HI WILL BE CHANGING LO TO HI DON'T CARE CHANGING, STATE UNKNOWN OUTPUTS ONLY CENTER LINE IS TRI-STATE AI03102 Table 45. DC Characteristics (5V devices) Symbol Parameter Test Condition (in addition to those in Table 39) Min. Typ. Max. Unit VIH Input High Voltage 4.5V < VCC < 5.5V 2 VCC +0.5 V VIL Input Low Voltage 4.5V < VCC < 5.5V –0.5 0.8 V 78/111 PSD813F1A Parameter Test Condition (in addition to those in Table 39) Min. VIH1 Reset High Level Input Voltage (Note 1) VIL1 Reset Low Level Input Voltage (Note 1) VHYS Reset Pin Hysteresis 0.3 VLKO VCC (min) for Flash Erase and Program 2.5 VOL Output Low Voltage Symbol VOH Max. Unit 0.8VCC VCC +0.5 V –0.5 0.2VCC –0.1 V V 4.2 V IOL = 20µA, VCC = 4.5V 0.01 0.1 V IOL = 8mA, VCC = 4.5V 0.25 0.45 V IOH = –20µA, VCC = 4.5V 4.4 4.49 V IOH = –2mA, VCC = 4.5V 2.4 3.9 V Output High Voltage ISB Standby Supply Current for Power-down Mode CSI >VCC –0.3V (Notes 2,3) ILI Input Leakage Current VSS < VIN < VCC ILO Output Leakage Current 0.45 < VOUT < VCC ICC (DC) (Note 5) 200 µA –1 ±0.1 1 µA –10 ±5 10 µA 0 ZPLD_TURBO = On, f = 0MHz 400 700 µA/PT During Flash memory or EEPROM WRITE/Erase Only 15 30 mA Read only, f = 0MHz 0 0 mA f = 0MHz 0 0 mA Flash memory or EEPROM AC Adder 2.5 3.5 mA/ MHz SRAM AC Adder 1.5 3.0 mA/ MHz Max. Unit Operating Supply Current Flash memory or EEPROM SRAM mA See Figure 36, note 4 ZPLD AC Adder ICC (AC) (Note 5) 50 ZPLD_TURBO = Off, f = 0MHz (Note 5) ZPLD Only Note: 1. 2. 3. 4. 5. Typ. Reset (RESET) has hysteresis. VIL1 is valid at or below 0.2VCC –0.1. VIH1 is valid at or above 0.8VCC. CSI deselected or internal Power-down mode is active. PLD is in non-Turbo mode, and none of the inputs are switching. Please see Figure 36., page 73 for the PLD current calculation. IOUT = 0mA Table 46. DC Characteristics (3V devices) Symbol Parameter Conditions Min. Typ. VIH High Level Input Voltage 3.0V < VCC < 3.6V 0.7VCC VCC +0.5 V VIL Low Level Input Voltage 3.0V < VCC < 3.6V –0.5 0.8 V VIH1 Reset High Level Input Voltage (Note 1) 0.8VCC VCC +0.5 V VIL1 Reset Low Level Input Voltage (Note 1) –0.5 0.2VCC –0.1 V 79/111 PSD813F1A Symbol Parameter Conditions Min. VHYS Reset Pin Hysteresis 0.3 VLKO VCC (min) for Flash Erase and Program 1.5 VOL Output Low Voltage VOH V IOL = 4mA, VCC = 3.0V 0.15 0.45 V IOH = –20µA, VCC = 3.0V 2.9 2.99 V IOH = –1mA, VCC = 3.0V 2.7 2.8 V Output High Voltage VSS < VIN < VCC ILO Output Leakage Current 0.45 < VIN < VCC CSI >VCC –0.3V (Notes 2) 25 100 µA –1 ±0.1 1 µA –10 ±5 10 µA ZPLD_TURBO = Off, f = 0MHz (Note 3) 0 ZPLD_TURBO = On, f = 0MHz 200 400 µA/PT During Flash memory or EEPROM WRITE/Erase Only 10 25 mA Read only, f = 0MHz 0 0 mA f = 0MHz 0 0 mA Flash memory or EEPROM AC Adder 1.5 2.0 mA/ MHz SRAM AC Adder 0.8 1.5 mA/ MHz ZPLD Only Operating Supply Current Flash memory or EEPROM SRAM ZPLD AC Adder µA/PT See Figure 37., page 73 Note: 1. Reset (RESET) has hysteresis. VIL1 is valid at or below 0.2VCC –0.1. VIH1 is valid at or above 0.8VCC. 2. CSI deselected or internal PD is active. 3. IOUT = 0mA Figure 41. Input to Output Disable / Enable INPUT tER tEA INPUT TO OUTPUT ENABLE/DISABLE AI02863 80/111 2.2 V Input Leakage Current (Note 3) V 0.1 ILI ICC (AC) Unit 0.01 Standby Supply Current for Power-down Mode ICC (DC) Max. IOL = 20µA, VCC = 3.0V ISB (Note 3) Typ. PSD813F1A Figure 42. Combinatorial Timing PLD CPLD INPUT tPD CPLD OUTPUT ai09228 Table 47. CPLD Combinatorial Timing (5V devices) -90 Symbol Parameter -12 -15 Conditions Min Max Min Max Min Fast PT Max Aloc tPD CPLD Input Pin/ Feedback to CPLD Combinatorial Output 25 30 32 tEA CPLD Input to CPLD Output Enable 26 30 tER CPLD Input to CPLD Output Disable 26 tARP CPLD Register Clear or Preset Delay 26 tARPW CPLD Register Clear or Preset Pulse Width tARD CPLD Array Delay 20 Any macrocell 16 Unit + 10 –2 ns 32 + 10 –2 ns 30 32 + 10 –2 ns 30 33 + 10 –2 ns 24 +2 Turbo Slew Off2 rate1 29 18 + 10 22 +2 ns ns Note: 1. Fast Slew Rate output available on PA3-PA0, PB3-PB0, and PD2-PD0. Decrement times by given amount. 2. ZPSD versions only. 81/111 PSD813F1A Table 48. CPLD Combinatorial Timing (3V devices) -15 Symbol Parameter -20 Turbo Off2 Slew rate1 Unit Max PT Aloc +4 + 20 –6 ns Conditions Min Max Min tPD CPLD Input Pin/Feedback to CPLD Combinatorial Output 48 55 tEA CPLD Input to CPLD Output Enable 43 50 + 20 –6 ns tER CPLD Input to CPLD Output Disable 43 50 + 20 –6 ns tARP CPLD Register Clear or Preset Delay 48 55 + 20 –6 ns tARPW CPLD Register Clear or Preset Pulse Width tARD CPLD Array Delay 30 35 Any macrocell + 20 29 33 +4 Note: 1. Fast Slew Rate output available on PA3-PA0, PB3-PB0, and PD2-PD0. Decrement times by given amount. 2. ZPSD versions only. Figure 43. Synchronous Clock Mode Timing – PLD tCH tCL CLKIN tS tH INPUT tCO REGISTERED OUTPUT AI02860 82/111 ns ns PSD813F1A Table 49. CPLD Macrocell Synchronous Clock Mode Timing (5V devices) -90 Symbol Parameter Min fMAX -12 -15 Conditions Max Min Max Min Max Fast PT Aloc Turbo Slew Off rate1 Unit Maximum Frequency External Feedback 1/(tS+tCO) 30.3 0 26.3 23.8 MHz Maximum Frequency Internal Feedback (fCNT) 1/(tS+tCO–10) 43.4 8 35.7 31.25 MHz 1/(tCH+tCL) 50.0 0 41.67 33.3 MHz Maximum Frequency Pipelined Data tS Input Setup Time 15 18 20 tH Input Hold Time 0 0 0 ns tCH Clock High Time Clock Input 10 12 15 ns tCL Clock Low Time Clock Input 10 12 15 ns tCO Clock to Output Delay Clock Input 18 20 22 tARD CPLD Array Delay Any macrocell 16 18 22 tMIN Minimum Clock Period 2 tCH+tCL 20 24 +2 + 10 ns –2 +2 30 ns ns ns Note: 1. Fast Slew Rate output available on PA3-PA0, PB3-PB0, and PD2-PD0. Decrement times by given amount. 2. CLKIN (PD1) tCLCL = tCH + tCL. 83/111 PSD813F1A Table 50. CPLD Macrocell Synchronous Clock Mode Timing (3V devices) -15 Symbol Parameter Min Maximum Frequency External Feedback fMAX Maximum Frequency Internal Feedback (fCNT) Maximum Frequency Pipelined Data -20 Conditions Max Min Max PT Aloc Turbo Off Slew rate1 Unit 1/(tS+tCO) 17.8 14.7 MHz 1/(tS+tCO–10) 19.6 17.2 MHz 1/(tCH+tCL) 33.3 31.2 MHz tS Input Setup Time 27 35 tH Input Hold Time 0 0 ns tCH Clock High Time Clock Input 15 16 ns tCL Clock Low Time Clock Input 15 16 ns tCO Clock to Output Delay Clock Input 35 39 tARD CPLD Array Delay Any macrocell 29 33 tMIN Minimum Clock Period2 tCH+tCL 29 +4 + 20 –6 +4 32 ns Figure 44. Asynchronous Reset / Preset tARPW RESET/PRESET INPUT tARP REGISTER OUTPUT AI02864 Figure 45. Asynchronous Clock Mode Timing (Product Term Clock) tCLA CLOCK tSA tHA INPUT tCOA REGISTERED OUTPUT AI02859 84/111 ns ns Note: 1. Fast Slew Rate output available on PA3-PA0, PB3-PB0, and PD2-PD0. 2. CLKIN (PD1) tCLCL = tCH + tCL. tCHA ns PSD813F1A Table 51. CPLD Macrocell Asynchronous Clock Mode Timing (5V devices) -90 Symbol Parameter Min fMAXA -12 -15 Conditions Max Min Max Min Max PT Aloc Turbo Slew Off1 Rate Unit Maximum Frequency External Feedback 1/(tSA+tCOA) 26.3 2 23.25 20.4 MHz Maximum Frequency Internal Feedback (fCNTA) 1/(tSA+tCOA–10) 35.7 1 30.30 25.64 MHz Maximum Frequency Pipelined Data 1/(tCHA+tCLA) 41.6 7 35.71 33.3 MHz tSA Input Setup Time 8 10 12 tHA Input Hold Time 12 14 14 tCHA Clock Input High Time 12 14 15 + 10 ns tCLA Clock Input Low Time 12 14 15 + 10 ns tCOA Clock to Output Delay tARDA CPLD Array Delay Any macrocell tMINA Minimum Clock Period 1/fCNTA 28 +2 33 37 16 18 22 39 ns ns 30 33 + 10 + 10 +2 –2 ns ns ns Note: 1. ZPSD versions only. 85/111 PSD813F1A Table 52. CPLD Macrocell Asynchronous Clock Mode Timing (3V devices) -15 Symbol Parameter Min fMAXA -20 Conditions Max Min Max PT Aloc Turbo Slew Off1 Rate Unit Maximum Frequency External Feedback 1/(tSA+tCOA) 19.2 16.9 MHz Maximum Frequency Internal Feedback (fCNTA) 1/(tSA+tCOA–10) 23.8 20.4 MHz Maximum Frequency Pipelined Data 1/(tCHA+tCLA) 27 24.4 MHz tSA Input Setup Time 12 13 tHA Input Hold Time 15 17 tCHA Clock High Time 22 25 + 20 ns tCLA Clock Low Time 15 16 + 20 ns tCOA Clock to Output Delay tARD CPLD Array Delay tMINA Minimum Clock Period Note: 1. ZPSD Versions only. 86/111 Any macrocell 1/fCNTA 42 +4 ns ns 40 46 29 33 49 + 20 + 20 +4 –6 ns ns ns PSD813F1A Figure 46. Input Macrocell Timing (product term clock) t INH t INL PT CLOCK t IS t IH INPUT OUTPUT t INO AI03101 Table 53. Input Macrocell Timing (5V devices) -90 Symbol Parameter -12 -15 Conditions Min Max Min Max Min Max PT Aloc Turbo Off2 Unit tIS Input Setup Time (Note 1) 0 0 0 tIH Input Hold Time (Note 1) 20 22 26 tINH NIB Input High Time (Note 1) 12 15 18 ns tINL NIB Input Low Time (Note 1) 12 15 18 ns tINO NIB Input to Combinatorial Delay (Note 1) 46 50 ns + 10 59 +2 + 10 ns ns Note: 1. Inputs from Port A, B, and C relative to register/ latch clock from the PLD. ALE/AS latch timings refer to tAVLX and tLXAX. 2. ZPSD versions only. Table 54. Input Macrocell Timing (3V Devices) -15 Symbol Parameter -20 Conditions Min Max Min Max PT Aloc Turbo Off2 Unit tIS Input Setup Time (Note 1) 0 0 tIH Input Hold Time (Note 1) 25 30 tINH NIB Input High Time (Note 1) 13 15 ns tINL NIB Input Low Time (Note 1) 13 15 ns tINO NIB Input to Combinatorial Delay (Note 1) 62 ns + 20 70 +4 + 20 ns ns Note: 1. Inputs from Port A, B, and C relative to register/latch clock from the PLD. ALE latch timings refer to tAVLX and tLXAX. 2. ZPSD Versions only. 87/111 PSD813F1A Figure 47. READ Timing tAVLX tLXAX 1 ALE /AS tLVLX A /D MULTIPLEXED BUS DATA VALID ADDRESS VALID tAVQV ADDRESS NON-MULTIPLEXED BUS ADDRESS VALID DATA NON-MULTIPLEXED BUS DATA VALID tSLQV CSI tRLQV tRHQX tRLRH RD (PSEN, DS) tRHQZ tEHEL E tTHEH tELTL R/W tAVPV ADDRESS OUT AI02895 Note: 1. tAVLX and tLXAX are not required for 80C251 in Page Mode or 80C51XA in Burst Mode. 88/111 PSD813F1A Table 55. READ Timing (5V devices) -90 Symbol Parameter Min tLVLX ALE or AS Pulse Width tAVLX Address Setup Time tLXAX Address Hold Time tAVQV Address Valid to Data Valid tSLQV CS Valid to Data Valid -12 -15 Conditions Max Min Max Min Max Turbo Off Unit 20 22 28 ns (Note 3) 6 8 10 ns (Note 3) 8 9 11 ns (Notes 3,6) 90 120 150 + 10 ns 100 135 150 ns RD to Data Valid 8-Bit Bus (Note 5) 32 35 40 ns RD or PSEN to Data Valid 8-Bit Bus, 8031, 80251 (Note 2) 38 42 45 ns tRHQX RD Data Hold Time (Note 1) 0 0 0 ns tRLRH RD Pulse Width (Note 1) 32 35 38 ns tRHQZ RD to Data High-Z (Note 1) tEHEL E Pulse Width 32 36 38 ns tTHEH R/W Setup Time to Enable 10 13 18 ns tELTL R/W Hold Time After Enable 0 0 0 ns tAVPV Address Input Valid to Address Output Delay tRLQV Note: 1. 2. 3. 4. 5. 6. (Note 4) 25 25 35 38 28 32 ns ns RD timing has the same timing as DS, LDS, UDS, and PSEN signals. RD and PSEN have the same timing. Any input used to select an internal PSD function. In multiplexed mode, latched addresses generated from ADIO delay to address output on any Port. RD timing has the same timing as DS, LDS, and UDS signals. In Turbo Off mode, add 10ns to tAVQV. 89/111 PSD813F1A Table 56. READ Timing (3V devices) -15 Symbol Parameter Min tLVLX ALE or AS Pulse Width tAVLX Address Setup Time tLXAX Address Hold Time tAVQV Address Valid to Data Valid tSLQV CS Valid to Data Valid tRLQV tRHQX tRLRH -20 Conditions Max Min Max Turbo Off Unit 26 30 ns (Note 3) 10 12 ns (Note 3) 12 14 ns (Note 3,6) 150 200 + 20 ns 150 200 ns RD to Data Valid 8-Bit Bus (Note 5) 35 40 ns RD or PSEN to Data Valid 8-Bit Bus, 8031, 80251 (Note 2) 50 55 ns RD Data Hold Time (Note 1) 0 0 ns RD Pulse Width (also DS, LDS, UDS) 40 45 ns RD or PSEN Pulse Width (8031, 80251) 55 60 ns (Note 1) tRHQZ RD to Data High-Z tEHEL E Pulse Width 45 52 ns tTHEH R/W Setup Time to Enable 18 20 ns tELTL R/W Hold Time After Enable 0 0 ns tAVPV Address Input Valid to Address Output Delay Note: 1. 2. 3. 4. 5. 6. 90/111 (Note 4) 40 45 35 RD timing has the same timing as DS, LDS, UDS, and PSEN signals. RD and PSEN have the same timing for 8031. Any input used to select an internal PSD function. In multiplexed mode latched address generated from ADIO delay to address output on any Port. RD timing has the same timing as DS, LDS, and UDS signals. In Turbo Off mode, add 20ns to tAVQV. 40 ns ns PSD813F1A Figure 48. WRITE Timing tAVLX t LXAX ALE/AS t LVLX A/D MULTIPLEXED BUS ADDRESS VALID DATA VALID tAVWL ADDRESS NON-MULTIPLEXED BUS ADDRESS VALID DATA NON-MULTIPLEXED BUS DATA VALID tSLWL CSI tDVWH t WLWH WR (DS) t WHDX t WHAX t EHEL E t THEH t ELTL R/ W t WLMV tAVPV t WHPV ADDRESS OUT STANDARD MCU I/O OUT AI02896 91/111 PSD813F1A Table 57. WRITE, Erase and Program Timing (5V devices) -90 Symbol Parameter ALE or AS Pulse Width tAVLX Address Setup Time tLXAX Address Hold Time tAVWL Address Valid to Leading Edge of WR tSLWL -15 Unit Min tLVLX -12 Conditions Max Min Max Min Max 20 22 28 ns (Note 1) 6 8 10 ns (Note 1) 8 9 11 ns (Notes 1,3) 15 18 20 ns CS Valid to Leading Edge of WR (Note 3) 15 18 20 ns tDVWH WR Data Setup Time (Note 3) 35 40 45 ns tWHDX WR Data Hold Time (Note 3) 5 5 5 ns tWLWH WR Pulse Width (Note 3) 35 40 45 ns tWHAX1 Trailing Edge of WR to Address Invalid (Note 3) 8 9 10 ns tWHAX2 Trailing Edge of WR to DPLD Address Invalid (Note 3,6) 0 0 0 ns tWHPV Trailing Edge of WR to Port Output Valid Using I/O Port Data Register tDVMV (Note 3) 30 35 38 ns Data Valid to Port Output Valid Using Macrocell Register Preset/Clear (Notes 3,5) 55 60 65 ns tAVPV Address Input Valid to Address Output Delay (Note 2) 25 28 30 ns tWLMV WR Valid to Port Output Valid Using Macrocell Register Preset/Clear (Notes 3,4) 55 60 65 ns Note: 1. 2. 3. 4. 5. 6. 92/111 Any input used to select an internal PSD function. In multiplexed mode, latched address generated from ADIO delay to address output on any port. WR has the same timing as E, LDS, UDS, WRL, and WRH signals. Assuming data is stable before active WRITE signal. Assuming WRITE is active before data becomes valid. TWHAX2 is the address hold time for DPLD inputs that are used to generate Sector Select signals for internal PSD memory. PSD813F1A Table 58. WRITE Timing (3V devices) -15 Symbol Parameter Unit Min tLVLX ALE or AS Pulse Width tAVLX Address Setup Time tLXAX Address Hold Time tAVWL Address Valid to Leading Edge of WR tSLWL -20 Conditions Max Min Max 26 30 (Note 1) 10 12 ns (Note 1) 12 14 ns (Notes 1,3) 20 25 ns CS Valid to Leading Edge of WR (Note 3) 20 25 ns tDVWH WR Data Setup Time (Note 3) 45 50 ns tWHDX WR Data Hold Time (Note 3) 8 10 ns tWLWH WR Pulse Width (Note 3) 48 53 ns tWHAX1 Trailing Edge of WR to Address Invalid (Note 3) 12 17 ns tWHAX2 Trailing Edge of WR to DPLD Address Invalid (Note 3,6) 0 0 ns tWHPV Trailing Edge of WR to Port Output Valid Using I/O Port Data Register tDVMV Data Valid to Port Output Valid Using Macrocell Register Preset/Clear tAVPV Address Input Valid to Address Output Delay tWLMV WR Valid to Port Output Valid Using Macrocell Register Preset/Clear Note: 1. 2. 3. 4. 5. 6. (Note 3) 45 50 ns (Notes 3,5) 90 100 ns (Note 2) 48 55 ns (Notes 3,4) 90 100 ns Any input used to select an internal PSD function. In multiplexed mode, latched address generated from ADIO delay to address output on any port. WR has the same timing as E, LDS, UDS, WRL, and WRH signals. Assuming data is stable before active WRITE signal. Assuming WRITE is active before data becomes valid. TWHAX2 is the address hold time for DPLD inputs that are used to generate Sector Select signals for internal PSD memory. Table 59. Flash Program, WRITE and Erase Times (5V devices) Symbol Parameter Min. Flash Program Typ. Max. 8.5 1 Flash Bulk Erase (pre-programmed) 3 Flash Bulk Erase (not pre-programmed) 10 tWHQV3 Sector Erase (pre-programmed) 1 tWHQV2 Sector Erase (not pre-programmed) 2.2 tWHQV1 Byte Program 14 Program / Erase Cycles (per Sector) tWHWLO Sector Erase Time-Out tQ7VQV DQ7 Valid to Output (DQ7-DQ0) Valid (Data Polling)2 Unit s 30 s s 30 s s 1200 100,000 µs cycles 100 µs 30 ns Note: 1. Programmed to all zero before erase. 2. The polling status, DQ7, is valid tQ7VQV time units before the data byte, DQ0-DQ7, is valid for reading. 93/111 PSD813F1A Table 60. Flash Program, WRITE and Erase Times (3V devices) Symbol Parameter Min. Flash Program Typ. Max. 8.5 Flash Bulk Erase1 (pre-programmed) 3 Flash Bulk Erase (not pre-programmed) 10 tWHQV3 Sector Erase (pre-programmed) 1 tWHQV2 Sector Erase (not pre-programmed) 2.2 tWHQV1 Byte Program 14 Program / Erase Cycles (per Sector) tWHWLO Sector Erase Time-Out tQ7VQV DQ7 Valid to Output (DQ7-DQ0) Valid (Data Polling)2 Unit s 30 s s 30 s s 1200 100,000 µs cycles 100 µs 30 ns Max Unit Note: 1. Programmed to all zero before erase. 2. The polling status, DQ7, is valid tQ7VQV time units before the data byte, DQ0-DQ7, is valid for reading. Table 61. EEPROM WRITE Times (5V devices) Symbol Parameter tEEHWL Write Protect After Power Up tBLC EEPROM Byte Load Cycle Timing (Note 1) tWCB EEPROM Byte Write Cycle Time tWCP EEPROM Page Write Cycle Time (Note 2) Program/Erase Cycles (Per Sector) Min Typ 5 0.2 ms 120 µs 4 10 ms 6 30 ms 10,000 cycles Note: 1. If the maximum time has elapsed between successive WRITE cycles to an EEPROM page, the transfer of this data to EEPROM cells will begin. Also, bytes cannot be written (loaded) to a page any faster than the indicated minimum type. 2. These specifications are for writing a page to EEPROM cells. Table 62. EEPROM WRITE Times (3V devices) Symbol Parameter tEEHWL Write Protect After Power Up tBLC EEPROM Byte Load Cycle Timing (Note 1) tWCB EEPROM Byte Write Cycle Time tWCP EEPROM Page Write Cycle Time (Note 2) Program/Erase Cycles (Per Sector) Min Typ Max 5 0.2 10,000 Unit ms 120 µs 4 10 ms 6 30 ms cycles Note: 1. If the maximum time has elapsed between successive WRITE cycles to an EEPROM page, the transfer of this data to EEPROM cells will begin. Also, bytes cannot be written (loaded) to a page any faster than the indicated minimum type. 2. These specifications are for writing a page to EEPROM cells. 94/111 PSD813F1A Figure 49. Peripheral I/O Read Timing ALE/AS ADDRESS A/D BUS DATA VALID tAVQV (PA) tSLQV (PA) CSI tRLQV (PA) tQXRH (PA) tRHQZ (PA) tRLRH (PA) RD tDVQV (PA) DATA ON PORT A AI02897 Table 63. Port A Peripheral Data Mode READ Timing (5V devices) -90 Symbol Parameter Min tAVQV–PA Address Valid to Data Valid tSLQV–PA CSI Valid to Data Valid -12 -15 Turbo Off Unit Max Conditions (Note 3) Max Min Max Min 40 45 45 + 10 ns 35 40 45 + 10 ns 32 35 40 ns RD to Data Valid 8031 Mode 38 42 45 ns tDVQV–PA Data In to Data Out Valid 30 35 38 ns tQXRH–PA RD Data Hold Time tRLRH–PA RD Pulse Width (Note 1) tRHQZ–PA RD to Data High-Z (Note 1) tRLQV–PA RD to Data Valid (Notes 1,4) 0 0 0 ns 32 35 38 ns 25 28 30 ns Table 64. Port A Peripheral Data Mode READ Timing (3V devices) -15 -20 Turbo Off Unit Max 55 60 + 20 ns 45 50 + 20 ns 40 45 ns RD to Data Valid 8031 Mode 45 50 ns tDVQV–PA Data In to Data Out Valid 60 65 ns tQXRH–PA RD Data Hold Time tRLRH–PA RD Pulse Width (Note 1) tRHQZ–PA RD to Data High-Z (Note 1) Symbol Parameter Conditions Min tAVQV–PA Address Valid to Data Valid tSLQV–PA CSI Valid to Data Valid tRLQV–PA RD to Data Valid (Note 3) (Notes 1,4) Max Min 0 0 ns 36 46 ns 40 45 ns 95/111 PSD813F1A Figure 50. Peripheral I/O WRITE Timing ALE/AS A / D BUS ADDRESS DATA OUT tWLQV tWHQZ (PA) (PA) WR tDVQV (PA) PORT A DATA OUT AI02898 Table 65. Port A Peripheral Data Mode WRITE Timing (5V devices) -90 Symbol Parameter -12 -15 Conditions Unit Min Max Min Max Min Max tWLQV–PA WR to Data Propagation Delay (Note 2) 35 38 40 ns tDVQV–PA Data to Port A Data Propagation Delay (Note 5) 30 35 38 ns tWHQZ–PA WR Invalid to Port A Tri-state (Note 2) 25 30 33 ns Note: 1. 2. 3. 4. 5. RD has the same timing as DS, LDS, UDS, and PSEN (in 8031 combined mode). WR has the same timing as the E, LDS, UDS, WRL, and WRH signals. Any input used to select Port A Data Peripheral mode. Data is already stable on Port A. Data stable on ADIO pins to data on Port A. Table 66. Port A Peripheral Data Mode WRITE Timing (3V devices) -15 Symbol Parameter -20 Conditions Unit Min Max Min Max tWLQV–PA WR to Data Propagation Delay (Note 2) 45 55 ns tDVQV–PA Data to Port A Data Propagation Delay (Note 5) 40 45 ns tWHQZ–PA WR Invalid to Port A Tri-state (Note 2) 33 35 ns Note: 1. 2. 3. 4. 5. 96/111 RD has the same timing as DS, LDS, UDS, and PSEN (in 8031 combined mode) signals. WR has the same timing as the E, LDS, UDS, WRL, and WRH signals. Any input used to select Port A Data Peripheral mode. Data is already stable on Port A. Data stable on ADIO pins to data on Port A. PSD813F1A Figure 51. Reset (RESET) Timing VCC VCC(min) tNLNH-PO tNLNH tNLNH-A tOPR Power-On Reset tOPR Warm Reset RESET AI02866b Table 67. Reset (RESET) Timing (5V devices) Symbol Parameter tNLNH RESET Active Low Time 1 tNLNH–PO Power On Reset Active Low Time tOPR RESET High to Operational Device Conditions Min Max Unit 150 ns 1 ms 120 ns Max Unit Note: 1. Reset (RESET) does not reset Flash memory Program or Erase cycles. 2. Warm reset aborts Flash memory Program or Erase cycles, and puts the device in READ Mode. Table 68. Reset (RESET) Timing (3V devices) Symbol Parameter tNLNH RESET Active Low Time 1 tNLNH–PO Power On Reset Active Low Time2 tOPR RESET High to Operational Device Conditions Min 300 ns 1 ms 300 ns Note: 1. Reset (RESET) does not reset Flash memory Program or Erase cycles. 2. tNLNH-PO is 10ms for devices manufactured before the rev.A. 97/111 PSD813F1A Figure 52. ISC Timing t ISCCH TCK t ISCCL t ISCPSU t ISCPH TDI/TMS t ISCPZV t ISCPCO ISC OUTPUTS/TDO t ISCPVZ ISC OUTPUTS/TDO AI02865 Table 69. ISC Timing (5V devices) -90 Symbol Parameter -12 -15 Conditions Unit Min Max Min Max Min Max tISCCF Clock (TCK, PC1) Frequency (except for PLD) (Note 1) tISCCH Clock (TCK, PC1) High Time (except for PLD) (Note 1) 26 29 31 ns tISCCL Clock (TCK, PC1) Low Time (except for PLD) (Note 1) 26 29 31 ns tISCCFP Clock (TCK, PC1) Frequency (PLD only) (Note 2) tISCCHP Clock (TCK, PC1) High Time (PLD only) (Note 2) 240 240 240 ns tISCCLP Clock (TCK, PC1) Low Time (PLD only) (Note 2) 240 240 240 ns tISCPSU ISC Port Set Up Time 8 10 10 ns tISCPH ISC Port Hold Up Time 5 5 5 ns tISCPCO ISC Port Clock to Output 23 24 25 ns tISCPZV ISC Port High-Impedance to Valid Output 23 24 25 ns tISCPVZ ISC Port Valid Output to High-Impedance 23 24 25 ns Note: 1. For non-PLD Programming, Erase or in ISC by-pass mode. 2. For Program or Erase PLD only. 98/111 18 16 2 14 2 2 MHz MHz PSD813F1A Table 70. ISC Timing (3V devices) -15 Symbol Parameter -20 Conditions Unit Min Max Min Max tISCCF Clock (TCK, PC1) Frequency (except for PLD) (Note 1) tISCCH Clock (TCK, PC1) High Time (except for PLD) (Note 1) 45 51 ns tISCCL Clock (TCK, PC1) Low Time (except for PLD) (Note 1) 45 51 ns tISCCFP Clock (TCK, PC1) Frequency (PLD only) (Note 2) tISCCHP Clock (TCK, PC1) High Time (PLD only) (Note 2) 240 240 ns tISCCLP Clock (TCK, PC1) Low Time (PLD only) (Note 2) 240 240 ns tISCPSU ISC Port Set Up Time 13 15 ns tISCPH ISC Port Hold Up Time 10 10 ns tISCPCO ISC Port Clock to Output 36 40 ns tISCPZV ISC Port High-Impedance to Valid Output 36 40 ns tISCPVZ ISC Port Valid Output to High-Impedance 36 40 ns 10 9 2 2 MHz MHz Note: 1. For non-PLD Programming, Erase or in ISC by-pass mode. 2. For Program or Erase PLD only. Table 71. Power-down Timing (5V devices) -90 Symbol Parameter ALE Access Time from Power-down tCLWH Maximum Delay from APD Enable to Internal PDN Valid Signal -15 Unit Min tLVDV -12 Conditions Max Min 90 Using CLKIN (PD1) Max Min 120 Max 150 15 * tCLCL1 ns µs Note: 1. tCLCL is the period of CLKIN (PD1). Table 72. Power-down Timing (3V devices) -15 Symbol Parameter Unit Min tLVDV ALE Access Time from Power-down tCLWH Maximum Delay from APD Enable to Internal PDN Valid Signal -20 Conditions Max Min 150 Using CLKIN (PD1) 15 * tCLCL1 Max 200 ns µs Note: 1. tCLCL is the period of CLKIN (PD1). 99/111 PSD813F1A PACKAGE MECHANICAL In order to meet environmental requirements, ST offers these devices in ECOPACK® packages. These packages have a Lead-free second level interconnect. The category of second level interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com. Figure 53. PQFP52 - 52-pin Plastic, Quad, Flat Package Mechanical Drawing D D1 D2 A2 e E2 E1 E Ne b N 1 A Nd CP L1 c QFP-A Note: Drawing is not to scale. 100/111 A1 α L PSD813F1A Table 73. PQFP52 - 52-pin Plastic, Quad, Flat Package Mechanical Dimensions mm inches Symb. Typ. Min. Max. Typ. Min. Max. A 2.35 0.093 A1 0.25 0.010 A2 2.00 1.80 2.10 b 0.22 c 0.079 0.077 0.083 0.38 0.009 0.015 0.11 0.23 0.004 0.009 D 13.20 13.15 13.25 0.520 0.518 0.522 D1 10.00 9.95 10.05 0.394 0.392 0.396 D2 7.80 – – 0.307 – – E 13.20 13.15 13.25 0.520 0.518 0.522 E1 10.00 9.95 10.05 0.394 0.392 0.396 E2 7.80 – – 0.307 – – e 0.65 – – 0.026 L 0.88 0.73 1.03 0.035 0.029 0.041 L1 1.60 – – 0.063 α 0° 7° 0° 7° N 52 52 Nd 13 13 Ne 13 13 CP 0.10 0.004 101/111 PSD813F1A Figure 54. PLCC52 - 52-lead Plastic Lead, Chip Carrier Package Mechanical Drawing D D1 A1 A2 M M1 1 N b1 e D2/E2 D3/E3 E1 E b L1 L C A CP PLCC-B Note: Drawing is not to scale. Table 74. PLCC52 - 52-lead Plastic Lead, Chip Carrier Package Mechanical Dimensions mm inches Symbol Typ. Min. Max. A 4.19 A1 Typ. Min. Max. 4.57 0.165 0.180 2.54 2.79 0.100 0.110 A2 – 0.91 – 0.036 B 0.33 0.53 0.013 0.021 B1 0.66 0.81 0.026 0.032 C 0.246 0.261 0.0097 0.0103 D 19.94 20.19 0.785 0.795 D1 19.05 19.15 0.750 0.754 D2 17.53 18.54 0.690 0.730 E 19.94 20.19 0.785 0.795 E1 19.05 19.15 0.750 0.754 E2 17.53 18.54 0.690 0.730 e 1.27 – – 0.050 – – R 0.89 – – 0.035 – – N 52 52 Nd 13 13 Ne 13 13 102/111 PSD813F1A Figure 55. TQFP64 - 64-lead Thin Quad Flatpack, Package Outline D D1 D2 A2 e E2 E1 E Ne b N 1 A Nd CP L1 c QFP-A A1 α L Note: Drawing is not to scale. 103/111 PSD813F1A Table 75. TQFP64 - 64-lead Thin Quad Flatpack, Package Mechanical Data mm inches Symb. Typ. A Min. Max. 1.42 1.54 Min. Max. 0.056 0.061 A1 0.10 0.07 0.14 0.004 0.003 0.005 A2 1.40 1.36 1.44 0.055 0.054 0.057 α 3.5° 0.0° 7.0° 3.5° 0.0° 7.0° b 0.35 0.33 0.38 0.014 0.013 0.015 c 104/111 Typ. 0.17 0.006 D 16.00 15.90 16.10 0.630 0.626 0.634 D1 14.00 13.98 14.03 0.551 0.550 0.552 D2 12.00 11.95 12.05 0.472 0.470 0.474 E 16.00 15.90 16.10 0.630 0.626 0.634 E1 14.00 13.98 14.03 0.551 0.550 0.552 E2 12.00 11.95 12.05 0.472 0.470 0.474 e 0.80 0.75 0.85 0.031 0.030 0.033 L 0.60 0.45 0.75 0.024 0.018 0.030 L1 1.00 0.94 1.06 0.039 0.037 0.042 CP 0.10 0.004 N 64 64 Nd 16 16 Ne 16 16 PSD813F1A PART NUMBERING Table 76. Ordering Information Scheme Example: PSD8 1 3 F 1 A – 15 J 1 T Device Type PSD8 = 8-bit PSD with Register Logic SRAM Capacity 1 = 16 Kbit Flash Memory Capacity 3 = 1 Mbit (128Kb x 8) 2nd Flash Memory 1 = 256 Kbit EEPROM Operating Voltage blank = VCC = 4.5 to 5.5V Speed 70 = 70ns 90 = 90ns 12 = 120ns 15 = 150ns Package J = ECOPACK PLCC52 M = ECOPACK PQFP52 U = ECOPACK TQFP64 Temperature Range blank = 0 to 70°C (commercial) 1 = –40 to 85°C (industrial) Option T = Tape & Reel Packing 105/111 PSD813F1A For other options, or for more information on any aspect of this device, please contact the ST Sales Office nearest you. 106/111 PSD813F1A APPENDIX A. PQFP52 PIN ASSIGNMENTS Table 77. PQFP52 Connections (Figure 2) Pin Number Pin Assignments Pin Number Pin Assignments 1 PD2 27 AD4 2 PD1 28 AD5 3 PD0 29 AD6 4 PC7 30 AD7 5 PC6 31 VCC 6 PC5 32 AD8 7 PC4 33 AD9 8 VCC 34 AD10 9 GND 35 AD11 10 PC3 36 AD12 11 PC2 37 AD13 12 PC1 38 AD14 13 PC0 39 AD15 14 PA7 40 CNTL0 15 PA6 41 RESET 16 PA5 42 CNTL2 17 PA4 43 CNTL1 18 PA3 44 PB7 19 GND 45 PB6 20 PA2 46 GND 21 PA1 47 PB5 22 PA0 48 PB4 23 AD0 49 PB3 24 AD1 50 PB2 25 AD2 51 PB1 26 AD3 52 PB0 107/111 PSD813F1A APPENDIX B. PLCC52 PIN ASSIGNMENTS Table 78. PLCC52 Connections (Figure 3) Pin Number Pin Assignments Pin Number Pin Assignments 1 GND 27 PA2 2 PB5 28 PA1 3 PB4 29 PA0 4 PB3 30 AD0 5 PB2 31 AD1 6 PB1 32 AD2 7 PB0 33 AD3 8 PD2 34 AD4 9 PD1 35 AD5 10 PD0 36 AD6 11 PC7 37 AD7 12 PC6 38 VCC 13 PC5 39 AD8 14 PC4 40 AD9 15 VCC 41 AD10 16 GND 42 AD11 17 PC3 43 AD12 18 PC2 44 AD13 19 PC1 45 AD14 20 PC0 46 AD15 21 PA7 47 CNTL0 22 PA6 48 RESET 23 PA5 49 CNTL2 24 PA4 50 CNTL1 25 PA3 51 PB7 26 GND 52 PB6 108/111 PSD813F1A APPENDIX C. TQFP64 PIN ASSIGNMENTS Table 79. TQFP64 Connections (Figure 4) Pin Number Pin Assignments Pin Number Pin Assignments 1 PD2 33 AD3 2 PD1 34 AD4 3 PD0 35 AD5 4 PC7 36 AD6 5 PC6 37 AD7 6 PC5 38 VCC 7 PC4 39 VCC 8 VCC 40 AD8 9 VCC 41 AD9 10 GND 42 AD10 11 GND 43 AD11 12 PC3 44 AD12 13 PC2 45 AD13 14 PC1 46 AD14 15 PC0 47 AD15 16 NC 48 CNTL0 17 NC 49 NC 18 NC 50 RESET 19 PA7 51 CNTL2 20 PA6 52 CNTL1 21 PA5 53 PB7 22 PA4 54 PB6 23 PA3 55 GND 24 GND 56 GND 25 GND 57 PB5 26 PA2 58 PB4 27 PA1 59 PB3 28 PA0 60 PB2 29 AD0 61 PB1 30 AD1 62 PB0 31 N/D 63 NC 32 AD2 64 NC 109/111 PSD813F1A REVISION HISTORY Table 80. Document Revision History Date Rev. August-2000 1.0 Document written in WSI format. 04-Jan-03 1.1 Front page, and back two pages, in ST format, added to the PDF file. References to Waferscale, WSI, EasyFLASH and PSDsoft 2000 updated to ST, ST, Flash+PSD and PSDsoft Express. 06-Dec-03 2.0 Document converted to ST format. Package references corrected (Figure 1). 03-Jun-04 3.0 Document reformatted for DMS; Ordering Information corrected (Table 76); added TQFP64 package (Figure 1, 55; Table 75) 04-Aug-04 4.0 Correct connection, assignment (Figure 4; Table 79) 02-Oct-2008 110/111 5 Description of Revision Part number changed to PSD813F1A. Added ECOPACK text in cover page and in section PACKAGE MECHANICAL, page 100. Updated datasheet status to “not for new design”. Backup battery feature removed: updated Features Summary, Table 1 (pins PC2 and PC4), Block Diagram figure, Memory section, SRAM section, Port C – Functionality and Structure section. Removed SRAM standby mode in POWER MANAGEMENT. Updated PC2 in Table 78. Removed VSTBY, ISTBY, VOH1, VDF, and IIDLE from Table 45 and Table 46. Removed VSTBYON timings tables. Added 15ns speed in Table 76 Ordering information scheme. 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