ATMEGA324A-MCHR

Features • High-performance, Low-power AVR® 8-bit Microcontroller • Advanced RISC Architecture – 131 Powerful Instructions – Most Single-clock Cycle Execution – 32 x 8 General Purpose Working Registers – Fully Static Operation – Up to 20 MIPS Throughput at 20 MHz – On-chip 2-cycle Multiplier High Endurance Non-volatile Memory segments – 16/32/64/128K Bytes of In-System Self-programmable Flash program memory – 512B/1K/2K/4K Bytes EEPROM – 1/2/4/16K Bytes Internal SRAM – Write/Erase Cycles: 10,000 Flash/ 100,000 EEPROM – Data retention: 20 years at 85°C/ 100 years at 25°C(1) – Optional Boot Code Section with Independent Lock Bits In-System Programming by On-chip Boot Program True Read-While-Write Operation – Programming Lock for Software Security JTAG (IEEE std. 1149.1 Compliant) Interface – Boundary-scan Capabilities According to the JTAG Standard – Extensive On-chip Debug Support – Programming of Flash, EEPROM, Fuses, and Lock Bits through the JTAG Interface Peripheral Features – Two 8-bit Timer/Counters with Separate Prescalers and Compare Modes – One 16-bit Timer/Counter with Separate Prescaler, Compare Mode, and Capture Mode – Real Time Counter with Separate Oscillator – Six PWM Channels – 8-channel, 10-bit ADC Differential mode with selectable gain at 1x, 10x or 200x – Byte-oriented Two-wire Serial Interface – Two Programmable Serial USART – Master/Slave SPI Serial Interface – Programmable Watchdog Timer with Separate On-chip Oscillator – On-chip Analog Comparator – Interrupt and Wake-up on Pin Change Special Microcontroller Features – Power-on Reset and Programmable Brown-out Detection – Internal Calibrated RC Oscillator – External and Internal Interrupt Sources – Six Sleep Modes: Idle, ADC Noise Reduction, Power-save, Power-down, Standby and Extended Standby I/O and Packages – 32 Programmable I/O Lines – 40-pin PDIP, 44-lead TQFP, 44-pad VQFN/QFN/MLF • • • 8-bit Microcontroller with 16/32/64/128K Bytes In-System Programmable Flash ATmega164A ATmega164PA ATmega324A ATmega324PA ATmega644A ATmega644PA ATmega1284 ATmega1284P • • – 44-pad DRQFN – 49-ball VFBGA • Operating Voltages – 1.8 - 5.5V Summary • Speed Grades – 0 - 4 MHz @ 1.8 - 5.5V – 0 - 10 MHz @ 2.7 - 5.5V – 0 - 20 MHz @ 4.5 - 5.5V • Power Consumption at 1 MHz, 1.8V, 25°C – Active: 0.4 mA – Power-down Mode: 0.1µA – Power-save Mode: 0.6µA (Including 32 kHz RTC) Note: 1. See ”Data Retention” on page 9 for details. 8272AS–AVR–01/10 164A/164PA/324A/324PA/644A/644PA/1284/1284P 1. Pin Configurations 1.1 Pinout - PDIP/TQFP/VQFN/QFN/MLF for ATmega164A/164PA/324A/324PA/644A/644PA/1284/1284P Figure 1-1. Pinout PDIP (PCINT8/XCK0/T0) PB0 (PCINT9/CLKO/T1) PB1 (PCINT10/INT2/AIN0) PB2 (PCINT11/OC0A/AIN1) PB3 (PCINT12/OC0B/SS) PB4 (PCINT13/MOSI) PB5 (PCINT14/MISO) PB6 (PCINT15/SCK) PB7 RESET VCC GND XTAL2 XTAL1 (PCINT24/RXD0) PD0 (PCINT25/TXD0) PD1 (PCINT26/RXD1/INT0) PD2 (PCINT27/TXD1/INT1) PD3 (PCINT28/XCK1/OC1B) PD4 (PCINT29/OC1A) PD5 (PCINT30/OC2B/ICP) PD6 PA0 (ADC0/PCINT0) PA1 (ADC1/PCINT1) PA2 (ADC2/PCINT2) PA3 (ADC3/PCINT3) PA4 (ADC4/PCINT4) PA5 (ADC5/PCINT5) PA6 (ADC6/PCINT6) PA7 (ADC7/PCINT7) AREF GND AVCC PC7 (TOSC2/PCINT23) PC6 (TOSC1/PCINT22) PC5 (TDI/PCINT21) PC4 (TDO/PCINT20) PC3 (TMS/PCINT19) PC2 (TCK/PCINT18) PC1 (SDA/PCINT17) PC0 (SCL/PCINT16) PD7 (OC2A/PCINT31) TQFP/VQFN/QFN/MLF PB4 (SS/OC0B/PCINT12) PB3 (AIN1/OC0A/PCINT11) PB2 (AIN0/INT2/PCINT10) PB1 (T1/CLKO/PCINT9) PB0 (XCK0/T0/PCINT8) GND VCC PA0 (ADC0/PCINT0) PA1 (ADC1/PCINT1) PA2 (ADC2/PCINT2) PA3 (ADC3/PCINT3) (PCINT13/MOSI) PB5 (PCINT14/MISO) PB6 (PCINT15/SCK) PB7 RESET VCC GND XTAL2 XTAL1 (PCINT24/RXD0) PD0 (PCINT25/TXD0) PD1 (PCINT26/RXD1/INT0) PD2 PA4 (ADC4/PCINT4) PA5 (ADC5/PCINT5) PA6 (ADC6/PCINT6) PA7 (ADC7/PCINT7) AREF GND AVCC PC7 (TOSC2/PCINT23) PC6 (TOSC1/PCINT22) PC5 (TDI/PCINT21) PC4 (TDO/PCINT20) Note: The large center pad underneath the VQFN/QFN/MLF package should be soldered to ground on the board to ensure good mechanical stability. (PCINT27/TXD1/INT1) (PCINT28/XCK1/OC1B) (PCINT29/OC1A) (PCINT30/OC2B/ICP) (PCINT31/OC2A) PD3 PD4 PD5 PD6 PD7 VCC GND (PCINT16/SCL) PC0 (PCINT17/SDA) PC1 (PCINT18/TCK) PC2 (PCINT19/TMS) PC3 2 8272AS–AVR–01/10 164A/164PA/324A/324PA/644A/644PA/1284/1284P 1.2 Pinout - DRQFN for ATmega164A/164PA/324A/324PA Figure 1-2. DRQFN - Pinout Top view A19 B16 A20 B17 A21 B18 A22 B19 A23 B20 A24 Bottom view A24 B20 A23 B19 A22 B18 A21 B17 A20 B16 A19 A1 B1 A2 B2 A3 B3 A4 B4 A5 B5 A6 A18 B15 A17 B14 A16 B13 A15 B12 A14 B11 A13 A18 B15 A17 B14 A16 B13 A15 B12 A14 B11 A13 B4 B1 A1 A2 B2 A3 B3 A4 A5 B5 A6 A12 B10 A11 B9 A10 B8 A9 B7 A8 B6 A7 Table 1-1. A1 B1 A2 B2 A3 B3 A4 B4 A5 B5 A6 DRQFN - Pinout PB5 PB6 PB7 RESET VCC GND XTAL2 XTAL1 PD0 PD1 PD2 A7 B6 A8 B7 A9 B8 A10 B9 A11 B10 A12 PD3 PD4 PD5 PD6 PD7 VCC GND PC0 PC1 PC2 PC3 A13 B11 A14 B12 A15 B13 A16 B14 A17 B15 A18 PC4 PC5 PC6 PC7 AVCC GND AREF PA7 PA6 PA5 PA4 A19 B16 A20 B17 A21 B18 A22 B19 A23 B20 A24 PA3 PA2 PA1 PA0 VCC GND PB0 PB1 PB2 PB3 PB4 B8 A10 B9 A11 B10 A12 B6 A7 A8 B7 A9 3 8272AS–AVR–01/10 164A/164PA/324A/324PA/644A/644PA/1284/1284P 1.3 Pinout - VFBGA for ATmega164A/164PA/324A/324PA Figure 1-3. VFBGA - Pinout Top view 1 A B C D E F G 2 3 4 5 6 7 7 6 Bottom view 5 4 3 2 1 A B C D E F G Table 1-2. BGA - Pinout 1 2 PB4 PB5 RESET XTAL2 PD1 PD3 PD4 3 PB2 PB3 PB7 PD0 PD5 PD6 VCC 4 GND PB0 PB1 GND PD7 PC0 GND 5 VCC PA0 PA1 PA4 PC5 PC2 PC1 6 PA2 PA3 PA6 PA7 PC7 PC4 PC3 7 GND PA5 AREF GND AVCC PC6 GND A B C D E F G GND PB6 VCC GND XTAL1 PD2 GND 4 8272AS–AVR–01/10 164A/164PA/324A/324PA/644A/644PA/1284/1284P 2. Overview The ATmega164A/164PA/324A/324PA/644A/644PA/1284/1284P is a low-power CMOS 8-bit microcontroller based on the AVR enhanced RISC architecture. By executing powerful instructions in a single clock cycle, the ATmega164A/164PA/324A/324PA/644A/644PA/1284/1284P achieves throughputs approaching 1 MIPS per MHz allowing the system designer to optimize power consumption versus processing speed. 2.1 Block Diagram Block Diagram PA7..0 VCC Figure 2-1. PB7..0 RESET Power Supervision POR / BOD & RESET PORT A (8) PORT B (8) GND Watchdog Timer Watchdog Oscillator A/D Converter Analog Comparator USART 0 XTAL1 Oscillator Circuits / Clock Generation EEPROM Internal Bandgap reference SPI XTAL2 8bit T/C 0 CPU JTAG/OCD 16bit T/C 1 TWI FLASH SRAM 8bit T/C 2 USART 1 PORT C (8) PORT D (8) TOSC2/PC7 TOSC1/PC6 PC5..0 PD7..0 The AVR core combines a rich instruction set with 32 general purpose working registers. All the 32 registers are directly connected to the Arithmetic Logic Unit (ALU), allowing two independent registers to be accessed in one single instruction executed in one clock cycle. The resulting architecture is more code efficient while achieving throughputs up to ten times faster than conventional CISC microcontrollers. The ATmega164A/164PA/324A/324PA/644A/644PA/1284/1284P provide the following features: 5 8272AS–AVR–01/10 164A/164PA/324A/324PA/644A/644PA/1284/1284P 16/32/64/128K bytes of In-System Programmable Flash with Read-While-Write capabilities, 512B/1K/2K/4K bytes EEPROM, 1/2/4/16K/ bytes SRAM, 32 general purpose I/O lines, 32 general purpose working registers, Real Time Counter (RTC), three flexible Timer/Counters with compare modes and PWM, 2 USARTs, a byte oriented 2-wire Serial Interface, a 8-channel, 10bit ADC with optional differential input stage with programmable gain, programmable Watchdog Timer with Internal Oscillator, an SPI serial port, IEEE std. 1149.1 compliant JTAG test interface, also used for accessing the On-chip Debug system and programming and six software selectable power saving modes. The Idle mode stops the CPU while allowing the SRAM, Timer/Counters, SPI port, and interrupt system to continue functioning. The Power-down mode saves the register contents but freezes the Oscillator, disabling all other chip functions until the next interrupt or Hardware Reset. In Power-save mode, the asynchronous timer continues to run, allowing the user to maintain a timer base while the rest of the device is sleeping. The ADC Noise Reduction mode stops the CPU and all I/O modules except Asynchronous Timer and ADC, to minimize switching noise during ADC conversions. In Standby mode, the Crystal/Resonator Oscillator is running while the rest of the device is sleeping. This allows very fast start-up combined with low power consumption. In Extended Standby mode, both the main Oscillator and the Asynchronous Timer continue to run. The device is manufactured using Atmel’s high-density nonvolatile memory technology. The Onchip ISP Flash allows the program memory to be reprogrammed in-system through an SPI serial interface, by a conventional nonvolatile memory programmer, or by an On-chip Boot program running on the AVR core. The boot program can use any interface to download the application program in the application Flash memory. Software in the Boot Flash section will continue to run while the Application Flash section is updated, providing true Read-While-Write operation. By combining an 8-bit RISC CPU with In-System Self-Programmable Flash on a monolithic chip, the Atmel ATmega164A/164PA/324A/324PA/644A/644PA/1284/1284P is a powerful microcontroller that provides a highly flexible and cost effective solution to many embedded control applications. The ATmega164A/164PA/324A/324PA/644A/644PA/1284/1284P AVR is supported with a full suite of program and system development tools including: C compilers, macro assemblers, program debugger/simulators, in-circuit emulators, and evaluation kits. 2.2 Comparison Between ATmega164A, ATmega164PA, ATmega324A, ATmega324PA, ATmega644A, ATmega644PA, ATmega1284 and ATmega1284P Differences between ATmega164A, ATmega164PA, ATmega324A, ATmega324PA, ATmega644A, ATmega644PA, ATmega1284 and ATmega1284P Flash 16 K 16 K 32 K 32 K 64 K 64 K 128 K 128 K EEPROM 512 512 1K 1K 2K 2K 4K 4K RAM 1K 1K 2K 2K bytes 4K 4K 16 K 16 K Units Table 2-1. Device ATmega164A ATmega164PA ATmega324A ATmega324PA ATmega644A ATmega644PA ATmega1284 ATmega1284P 6 8272AS–AVR–01/10 164A/164PA/324A/324PA/644A/644PA/1284/1284P 2.3 2.3.1 Pin Descriptions VCC Digital supply voltage. 2.3.2 GND Ground. 2.3.3 Port A (PA7:PA0) Port A serves as analog inputs to the Analog-to-digital Converter. Port A also serves as an 8-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). The Port A output buffers have symmetrical drive characteristics with both high sink and source capability. As inputs, Port A pins that are externally pulled low will source current if the pull-up resistors are activated. The Port A pins are tri-stated when a reset condition becomes active, even if the clock is not running. Port A also serves the functions of various special features ATmega164A/164PA/324A/324PA/644A/644PA/1284/1284P as listed on page 81. of the 2.3.4 Port B (PB7:PB0) Port B is an 8-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). The Port B output buffers have symmetrical drive characteristics with both high sink and source capability. As inputs, Port B pins that are externally pulled low will source current if the pull-up resistors are activated. The Port B pins are tri-stated when a reset condition becomes active, even if the clock is not running. Port B also serves the functions of various special features ATmega164A/164PA/324A/324PA/644A/644PA/1284/1284P as listed on page 83. of the 2.3.5 Port C (PC7:PC0) Port C is an 8-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). The Port C output buffers have symmetrical drive characteristics with both high sink and source capability. As inputs, Port C pins that are externally pulled low will source current if the pull-up resistors are activated. The Port C pins are tri-stated when a reset condition becomes active, even if the clock is not running. Port C also serves the functions of the JTAG interface, along with special features of the ATmega164A/164PA/324A/324PA/644A/644PA/1284/1284P as listed on page 86. 2.3.6 Port D (PD7:PD0) Port D is an 8-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). The Port D output buffers have symmetrical drive characteristics with both high sink and source capability. As inputs, Port D pins that are externally pulled low will source current if the pull-up resistors are activated. The Port D pins are tri-stated when a reset condition becomes active, even if the clock is not running. Port D also serves the functions of various special features ATmega164A/164PA/324A/324PA/644A/644PA/1284/1284P as listed on page 88. of the 7 8272AS–AVR–01/10 164A/164PA/324A/324PA/644A/644PA/1284/1284P 2.3.7 RESET Reset input. A low level on this pin for longer than the minimum pulse length will generate a reset, even if the clock is not running. The minimum pulse length is given in ”System and Reset Characteristics” on page 335. Shorter pulses are not guaranteed to generate a reset. 2.3.8 XTAL1 Input to the inverting Oscillator amplifier and input to the internal clock operating circuit. 2.3.9 XTAL2 Output from the inverting Oscillator amplifier. 2.3.10 AVCC AVCC is the supply voltage pin for Port A and the Analog-to-digital Converter. It should be externally connected to VCC, even if the ADC is not used. If the ADC is used, it should be connected to VCC through a low-pass filter. 2.3.11 AREF This is the analog reference pin for the Analog-to-digital Converter. 8 8272AS–AVR–01/10 164A/164PA/324A/324PA/644A/644PA/1284/1284P 3. Resources A comprehensive set of development tools, application notes and datasheetsare available for download on http://www.atmel.com/avr. 4. About Code Examples This documentation contains simple code examples that briefly show how to use various parts of the device. Be aware that not all C compiler vendors include bit definitions in the header files and interrupt handling in C is compiler dependent. Please confirm with the C compiler documentation for more details. The code examples assume that the part specific header file is included before compilation. For I/O registers located in extended I/O map, "IN", "OUT", "SBIS", "SBIC", "CBI", and "SBI" instructions must be replaced with instructions that allow access to extended I/O. Typically "LDS" and "STS" combined with "SBRS", "SBRC", "SBR", and "CBR". Note: 1. 5. Data Retention Reliability Qualification results show that the projected data retention failure rate is much less than 1 PPM over 20 years at 85°C or 100 years at 25°C. 9 8272AS–AVR–01/10 164A/164PA/324A/324PA/644A/644PA/1284/1284P 6. Register Summary Address (0xFF) (0xFE) (0xFD) (0xFC) (0xFB) (0xFA) (0xF9) (0xF8) (0xF7) (0xF6) (0xF5) (0xF4) (0xF3) (0xF2) (0xF1) (0xF0) (0xEF) (0xEE) (0xED) (0xEC) (0xEB) (0xEA) (0xE9) (0xE8) (0xE7) (0xE6) (0xE5) (0xE4) (0xE3) (0xE2) (0xE1) (0xE0) (0xDF) (0xDE) (0xDD) (0xDC) (0xDB) (0xDA) (0xD9) (0xD8) (0xD7) (0xD6) (0xD5) (0xD4) (0xD3) (0xD2) (0xD1) (0xD0) (0xCF) (0xCE) (0xCD) (0xCC) (0xCB) (0xCA) (0xC9) (0xC8) (0xC7) (0xC6) (0xC5) (0xC4) (0xC3) (0xC2) (0xC1) Name Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved UDR1 UBRR1H UBRR1L Reserved UCSR1C UCSR1B UCSR1A Reserved UDR0 UBRR0H UBRR0L Reserved UCSR0C UCSR0B Bit 7 UMSEL11 RXCIE1 RXC1 UMSEL01 RXCIE0 Bit 6 UMSEL10 TXCIE1 TXC1 UMSEL00 TXCIE0 Bit 5 UPM11 UDRIE1 UDRE1 UPM01 UDRIE0 Bit 4 UPM10 RXEN1 FE1 UPM00 RXEN0 Bit 3 - Bit 2 - Bit 1 - Bit 0 - Page USART1 I/O Data Register - 190 194/207 194/207 UCSZ10/UCPHA0(5) RXB81 U2X1 UCPOL1 TXB81 MPCM1 190 194/207 194/207 UCSZ00/UCPHA0(5) RXB80 UCPOL0 TXB80 192/206 191/205 192/206 191/205 190/205 USART1 Baud Rate Register High Byte USBS1 TXEN1 DOR1 USART0 I/O Data Register USART0 Baud Rate Register High Byte USBS0 TXEN0 UCSZ01/UDORD0(5) UCSZ02 UCSZ11/UDORD0(5) UCSZ12 UPE1 - USART1 Baud Rate Register Low Byte USART0 Baud Rate Register Low Byte 10 8272AS–AVR–01/10 164A/164PA/324A/324PA/644A/644PA/1284/1284P Address (0xC0) (0xBF) (0xBE) (0xBD) (0xBC) (0xBB) (0xBA) (0xB9) (0xB8) (0xB7) (0xB6) (0xB5) (0xB4) (0xB3) (0xB2) (0xB1) (0xB0) (0xAF) (0xAE) (0xAD) (0xAC) (0xAB) (0xAA) (0xA9) (0xA8) (0xA7) (0xA6) (0xA5) (0xA4) (0xA3) (0xA2) (0xA1) (0xA0) (0x9F) (0x9E) (0x9D) (0x9C) (0x9B) (0x9A) (0x99) (0x98) (0x97) (0x96) (0x95) (0x94) (0x93) (0x92) (0x91) (0x90) (0x8F) (0x8E) (0x8D) (0x8C) (0x8B) (0x8A) (0x89) (0x88) (0x87) (0x86) (0x85) (0x84) (0x83) (0x82) (0x81) (0x80) (0x7F) Name UCSR0A Reserved Reserved TWAMR TWCR TWDR TWAR TWSR TWBR Reserved ASSR Reserved OCR2B OCR2A TCNT2 TCCR2B TCCR2A Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved OCR1BH OCR1BL OCR1AH OCR1AL ICR1H ICR1L TCNT1H TCNT1L Reserved TCCR1C TCCR1B TCCR1A DIDR1 Bit 7 RXC0 TWAM6 TWINT TWA6 TWS7 - Bit 6 TXC0 TWAM5 TWEA TWA5 TWS6 EXCLK - Bit 5 UDRE0 TWAM4 TWSTA TWA4 TWS5 AS2 - Bit 4 FE0 TWAM3 TWSTO TWA3 TWS4 TCN2UB - Bit 3 DOR0 TWAM2 TWWC TWA2 TWS3 OCR2AUB - Bit 2 UPE0 TWAM1 TWEN TWA1 OCR2BUB - Bit 1 U2X0 TWAM0 TWA0 TWPS1 TCR2AUB - Bit 0 MPCM0 TWIE TWGCE TWPS0 TCR2BUB - Page 190/205 236 233 235 236 235 233 158 158 158 158 2-wire Serial Interface Data Register 2-wire Serial Interface Bit Rate Register Timer/Counter2 Output Compare Register B Timer/Counter2 Output Compare Register A Timer/Counter2 (8 Bit) FOC2A COM2A1 FOC2B COM2A0 COM2B1 COM2B0 WGM22 CS22 CS21 WGM21 CS20 WGM20 - 156 154 Timer/Counter1 - Output Compare Register B High Byte Timer/Counter1 - Output Compare Register B Low Byte Timer/Counter1 - Output Compare Register A High Byte Timer/Counter1 - Output Compare Register A Low Byte Timer/Counter1 - Input Capture Register High Byte Timer/Counter1 - Input Capture Register Low Byte Timer/Counter1 - Counter Register High Byte Timer/Counter1 - Counter Register Low Byte FOC1A ICNC1 COM1A1 FOC1B ICES1 COM1A0 COM1B1 WGM13 COM1B0 WGM12 CS12 CS11 WGM11 AIN1D CS10 WGM10 AIN0D 137 137 137 137 138 138 137 137 136 135 133 240 11 8272AS–AVR–01/10 164A/164PA/324A/324PA/644A/644PA/1284/1284P Address (0x7E) (0x7D) (0x7C) (0x7B) (0x7A) (0x79) (0x78) (0x77) (0x76) (0x75) (0x74) (0x73) (0x72) (0x71) (0x70) (0x6F) (0x6E) (0x6D) (0x6C) (0x6B) (0x6A) (0x69) (0x68) (0x67) (0x66) (0x65) (0x64) (0x63) (0x62) (0x61) (0x60) 0x3F (0x5F) 0x3E (0x5E) 0x3D (0x5D) 0x3C (0x5C) 0x3B (0x5B) 0x3A (0x5A) 0x39 (0x59) 0x38 (0x58) 0x37 (0x57) 0x36 (0x56) 0x35 (0x55) 0x34 (0x54) 0x33 (0x53) 0x32 (0x52) 0x31 (0x51) 0x30 (0x50) 0x2F (0x4F) 0x2E (0x4E) 0x2D (0x4D) 0x2C (0x4C) 0x2B (0x4B) 0x2A (0x4A) 0x29 (0x49) 0x28 (0x48) 0x27 (0x47) 0x26 (0x46) 0x25 (0x45) 0x24 (0x44) 0x23 (0x43) 0x22 (0x42) 0x21 (0x41) 0x20 (0x40) 0x1F (0x3F) 0x1E (0x3E) 0x1D (0x3D) Name DIDR0 Reserved ADMUX ADCSRB ADCSRA ADCH ADCL Reserved Reserved Reserved Reserved PCMSK3 Reserved Reserved TIMSK2 TIMSK1 TIMSK0 PCMSK2 PCMSK1 PCMSK0 Reserved EICRA PCICR Reserved OSCCAL Reserved PRR Reserved Reserved CLKPR WDTCSR SREG SPH SPL Reserved Reserved Reserved Reserved Reserved SPMCSR Reserved MCUCR MCUSR SMCR Reserved OCDR ACSR Reserved SPDR SPSR SPCR GPIOR2 GPIOR1 Reserved OCR0B OCR0A TCNT0 TCCR0B TCCR0A GTCCR EEARH EEARL EEDR EECR GPIOR0 EIMSK Bit 7 ADC7D REFS1 ADEN Bit 6 ADC6D REFS0 ACME ADSC Bit 5 ADC5D ADLAR ADATE Bit 4 ADC4D MUX4 ADIF Bit 3 ADC3D MUX3 ADIE ADC Data Register High byte ADC Data Register Low byte Bit 2 ADC2D MUX2 ADTS2 ADPS2 Bit 1 ADC1D MUX1 ADTS1 ADPS1 Bit 0 ADC0D MUX0 ADTS0 ADPS0 Page 260 256 239 258 259 259 PCINT31 PCINT23 PCINT15 PCINT7 PRTWI CLKPCE WDIF I SP15 SP7 SPMIE JTD ACD SPIF0 SPIE0 PCINT30 PCINT22 PCINT14 PCINT6 PRTIM2 WDIE T SP14 SP6 RWWSB BODS(6) ACBG WCOL0 SPE0 PCINT29 ICIE1 PCINT21 PCINT13 PCINT5 ISC21 PRTIM0 WDP3 H SP13 SP5 SIGRD BODSE(6) ACO DORD0 PCINT28 PCINT20 PCINT12 PCINT4 ISC20 PRUSART1 WDCE S SP12 SP4 RWWSRE PUD JTRF ACI MSTR0 PCINT27 PCINT19 PCINT11 PCINT3 ISC11 PCIE3 Oscillator Calibration Register PRTIM1 CLKPS3 WDE V SP11 SP3 BLBSET WDRF SM2 On-Chip Debug Register ACIE SPI 0 Data Register CPOL0 General Purpose I/O Register 2 General Purpose I/O Register 1 PCINT26 OCIE2B OCIE1B OCIE0B PCINT18 PCINT10 PCINT2 ISC10 PCIE2 PRSPI CLKPS2 WDP2 N SP10 SP2 PGWRT BORF SM1 ACIC CPHA0 PCINT25 OCIE2A OCIE1A OCIE0A PCINT17 PCINT9 PCINT1 ISC01 PCIE1 PRUSART0 CLKPS1 WDP1 Z SP9 SP1 PGERS IVSEL EXTRF SM0 ACIS1 SPR01 PCINT24 TOIE2 TOIE1 TOIE0 PCINT16 PCINT8 PCINT0 ISC00 PCIE0 41 PRADC CLKPS0 WDP0 C SP8 SP0 SPMEN IVCE PORF SE 266 ACIS0 171 SPI2X0 SPR00 170 169 29 29 258 92/276 59/276 48 293 41 60 11 12 12 49 68 70 159 138 110 71 71 72 71 - - - - - - - 110 109 109 Timer/Counter0 Output Compare Register B Timer/Counter0 Output Compare Register A Timer/Counter0 (8 Bit) FOC0A COM0A1 TSM FOC0B COM0A0 COM0B1 COM0B0 EEPROM Data Register EEPM1 EEPM0 EERIE EEMPE INT2 EEPE INT1 EERE INT0 General Purpose I/O Register 0 WGM02 CS02 CS01 WGM01 PSRASY CS00 WGM00 PSR5SYNC 108 110 161 24 24 24 24 29 69 EEPROM Address Register High Byte EEPROM Address Register Low Byte 12 8272AS–AVR–01/10 164A/164PA/324A/324PA/644A/644PA/1284/1284P Address 0x1C (0x3C) 0x1B (0x3B) 0x1A (0x3A) 0x19 (0x39) 0x18 (0x38) 0x17 (0x37) 0x16 (0x36) 0x15 (0x35) 0x14 (0x34) 0x13 (0x33) 0x12 (0x32) 0x11 (0x31) 0x10 (0x30) 0x0F (0x2F) 0x0E (0x2E) 0x0D (0x2D) 0x0C (0x2C) 0x0B (0x2B) 0x0A (0x2A) 0x09 (0x29) 0x08 (0x28) 0x07 (0x27) 0x06 (0x26) 0x05 (0x25) 0x04 (0x24) 0x03 (0x23) 0x02 (0x22) 0x01 (0x21) 0x00 (0x20) Name EIFR PCIFR Reserved Reserved Reserved TIFR2 TIFR1 TIFR0 Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved PORTD DDRD PIND PORTC DDRC PINC PORTB DDRB PINB PORTA DDRA PINA Bit 7 PORTD7 DDD7 PIND7 PORTC7 DDC7 PINC7 PORTB7 DDB7 PINB7 PORTA7 DDA7 PINA7 Bit 6 PORTD6 DDD6 PIND6 PORTC6 DDC6 PINC6 PORTB6 DDB6 PINB6 PORTA6 DDA6 PINA6 Bit 5 ICF1 PORTD5 DDD5 PIND5 PORTC5 DDC5 PINC5 PORTB5 DDB5 PINB5 PORTA5 DDA5 PINA5 Bit 4 PORTD4 DDD4 PIND4 PORTC4 DDC4 PINC4 PORTB4 DDB4 PINB4 PORTA4 DDA4 PINA4 Bit 3 PCIF3 PORTD3 DDD3 PIND3 PORTC3 DDC3 PINC3 PORTB3 DDB3 PINB3 PORTA3 DDA3 PINA3 Bit 2 INTF2 PCIF2 OCF2B OCF1B OCF0B PORTD2 DDD2 PIND2 PORTC2 DDC2 PINC2 PORTB2 DDB2 PINB2 PORTA2 DDA2 PINA2 Bit 1 INTF1 PCIF1 OCF2A OCF1A OCF0A PORTD1 DDD1 PIND1 PORTC1 DDC1 PINC1 PORTB1 DDB1 PINB1 PORTA1 DDA1 PINA1 Bit 0 INTF0 PCIF0 TOV2 TOV1 TOV0 PORTD0 DDD0 PIND0 PORTC0 DDC0 PINC0 PORTB0 DDB0 PINB0 PORTA0 DDA0 PINA0 Page 69 70 160 139 110 93 93 93 93 93 93 92 92 92 92 92 92 Notes: 1. For compatibility with future devices, reserved bits should be written to zero if accessed. Reserved I/O memory addresses should never be written. 2. I/O registers within the address range $00 - $1F are directly bit-accessible using the SBI and CBI instructions. In these registers, the value of single bits can be checked by using the SBIS and SBIC instructions. 3. Some of the status flags are cleared by writing a logical one to them. Note that the CBI and SBI instructions will operate on all bits in the I/O register, writing a one back into any flag read as set, thus clearing the flag. The CBI and SBI instructions work with registers 0x00 to 0x1F only. 4. When using the I/O specific commands IN and OUT, the I/O addresses $00 - $3F must be used. When addressing I/O registers as data space using LD and ST instructions, $20 must be added to these addresses. The ATmega164A/164PA/324A/324PA/644A/644PA/1284/1284P is a complex microcontroller with more peripheral units than can be supported within the 64 location reserved in Opcode for the IN and OUT instructions. For the Extended I/O space from $60 - $FF, only the ST/STS/STD and LD/LDS/LDD instructions can be used. 5. USART in SPI Master Mode. 6. Only available in the ATmega164PA/324PA/644PA/1284P. 13 8272AS–AVR–01/10 164A/164PA/324A/324PA/644A/644PA/1284/1284P 7. Instruction Set Summary Mnemonics ADD ADC ADIW SUB SUBI SBC SBCI SBIW AND ANDI OR ORI EOR COM NEG SBR CBR INC DEC TST CLR SER MUL MULS MULSU FMUL FMULS FMULSU RJMP IJMP JMP RCALL ICALL CALL RET RETI CPSE CP CPC CPI SBRC SBRS SBIC SBIS BRBS BRBC BREQ BRNE BRCS BRCC BRSH BRLO BRMI BRPL BRGE BRLT BRHS BRHC BRTS BRTC BRVS Rd,Rr Rd,Rr Rd,Rr Rd,K Rr, b Rr, b P, b P, b s, k s, k k k k k k k k k k k k k k k k k k k Operands Rd, Rr Rd, Rr Rdl,K Rd, Rr Rd, K Rd, Rr Rd, K Rdl,K Rd, Rr Rd, K Rd, Rr Rd, K Rd, Rr Rd Rd Rd,K Rd,K Rd Rd Rd Rd Rd Rd, Rr Rd, Rr Rd, Rr Rd, Rr Rd, Rr Rd, Rr k Add two Registers Description Rd ← Rd + Rr Operation Flags Z,C,N,V,H Z,C,N,V,H Z,C,N,V,S Z,C,N,V,H Z,C,N,V,H Z,C,N,V,H Z,C,N,V,H Z,C,N,V,S Z,N,V Z,N,V Z,N,V Z,N,V Z,N,V Z,C,N,V Z,C,N,V,H Z,N,V Z,N,V Z,N,V Z,N,V Z,N,V Z,N,V None Z,C Z,C Z,C Z,C Z,C Z,C None None None None None None None I None Z, N,V,C,H Z, N,V,C,H Z, N,V,C,H None None None None None None None None None None None None None None None None None None None None None #Clocks 1 1 2 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 3 4 4 5 5 5 1/2/3 1 1 1 1/2/3 1/2/3 1/2/3 1/2/3 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 ARITHMETIC AND LOGIC INSTRUCTIONS Add with Carry two Registers Add Immediate to Word Subtract two Registers Subtract Constant from Register Subtract with Carry two Registers Subtract with Carry Constant from Reg. Subtract Immediate from Word Logical AND Registers Logical AND Register and Constant Logical OR Registers Logical OR Register and Constant Exclusive OR Registers One’s Complement Two’s Complement Set Bit(s) in Register Clear Bit(s) in Register Increment Decrement Test for Zero or Minus Clear Register Set Register Multiply Unsigned Multiply Signed Multiply Signed with Unsigned Fractional Multiply Unsigned Fractional Multiply Signed Fractional Multiply Signed with Unsigned Relative Jump Indirect Jump to (Z) Direct Jump Relative Subroutine Call Indirect Call to (Z) Direct Subroutine Call Subroutine Return Interrupt Return Compare, Skip if Equal Compare Compare with Carry Compare Register with Immediate Skip if Bit in Register Cleared Skip if Bit in Register is Set Skip if Bit in I/O Register Cleared Skip if Bit in I/O Register is Set Branch if Status Flag Set Branch if Status Flag Cleared Branch if Equal Branch if Not Equal Branch if Carry Set Branch if Carry Cleared Branch if Same or Higher Branch if Lower Branch if Minus Branch if Plus Branch if Greater or Equal, Signed Branch if Less Than Zero, Signed Branch if Half Carry Flag Set Branch if Half Carry Flag Cleared Branch if T Flag Set Branch if T Flag Cleared Branch if Overflow Flag is Set Rd ← Rd + Rr + C Rdh:Rdl ← Rdh:Rdl + K Rd ← Rd - Rr Rd ← Rd - K Rd ← Rd - Rr - C Rd ← Rd - K - C Rdh:Rdl ← Rdh:Rdl - K Rd ← Rd • Rr Rd ← Rd • K Rd ← Rd v Rr Rd ← Rd v K Rd ← Rd ⊕ Rr Rd ← 0xFF − Rd Rd ← 0x00 − Rd Rd ← Rd v K Rd ← Rd • (0xFF - K) Rd ← Rd + 1 Rd ← Rd − 1 Rd ← Rd • Rd Rd ← Rd ⊕ Rd Rd ← 0xFF R1:R0 ← Rd x Rr R1:R0 ← Rd x Rr R1:R0 ← Rd x Rr R1:R0 ← (Rd x Rr)