M3806AED-XXXFP

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RENESAS(瑞萨)
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M3806AED-XXXFP - SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER - Renesas Technology Corp

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M3806AED-XXXFP 数据手册

To all our customers Regarding the change of names mentioned in the document, such as Mitsubishi Electric and Mitsubishi XX, to Renesas Technology Corp. The semiconductor operations of Hitachi and Mitsubishi Electric were transferred to Renesas Technology Corporation on April 1st 2003. These operations include microcomputer, logic, analog and discrete devices, and memory chips other than DRAMs (flash memory, SRAMs etc.) Accordingly, although Mitsubishi Electric, Mitsubishi Electric Corporation, Mitsubishi Semiconductors, and other Mitsubishi brand names are mentioned in the document, these names have in fact all been changed to Renesas Technology Corp. Thank you for your understanding. Except for our corporate trademark, logo and corporate statement, no changes whatsoever have been made to the contents of the document, and these changes do not constitute any alteration to the contents of the document itself. Note : Mitsubishi Electric will continue the business operations of high frequency & optical devices and power devices. Renesas Technology Corp. Customer Support Dept. April 1, 2003 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER DESCRIPTION The 3826 group is the 8-bit microcomputer based on the 740 family core technology. The 3826 group has the LCD drive control circuit, an 8-channel AD/D-A converter, UART and PWM as additional functions. The various microcomputers in the 3826 group include variations of internal memory size and packaging. For details, refer to the section on part numbering. For details on availability of microcomputers in the 3826 Group, refer the section on group expansion. • Timers ........................................................... 8-bit ✕ 3, 16-bit ✕ 2 • Serial I/O1 ..................... 8-bit ✕ 1 (UART or Clock-synchronous) • Serial I/O2 .................................... 8-bit ✕ 1 (Clock-synchronous) • PWM output .................................................................... 8-bit ✕ 1 • A-D converter .................................................. 8-bit ✕ 8 channels • D-A converter .................................................. 8-bit ✕ 2 channels .................................... (used as the DTMF and CTCSS function) • LCD drive control circuit Bias ................................................................................... 1/2, 1/3 Duty ............................................................................ 1/2, 1/3, 1/4 Common output .......................................................................... 4 Segment output ......................................................................... 40 2 Clock generating circuits (connect to external ceramic resonator or quartz-crystal oscillator) Watchdog timer ............................................................. 14-bit ✕ 1 Power source voltage ................................................ 2.5 to 5.5 V ............................................ (2.2 to 5.5 V for low voltage version) Power dissipation In high-speed mode ........................................................... 40 mW (at 8 MHz oscillation frequency, at 5 V power source voltage) In low-speed mode .............................................................. 60 µW (at 32 kHz oscillation frequency, at 3 V power source voltage) Operating temperature range ................................... – 20 to 85°C FEATURES • Basic machine-language instructions ....................................... 71 • The minimum instruction execution time ............................ 0.5 µs • • • • • • (at 8 MHz oscillation frequency) Memory size ROM ................................................................ 32 K to 60 K bytes RAM ............................................................... 1024 to 2560 bytes Programmable input/output ports ............................................. 55 Software pull-up resistors .................................................... Built-in Output ports ................................................................................. 8 Input ports .................................................................................... 1 Interrupts .................................................. 17 sources, 16 vectors (includes key input interrupt) • • • • • APPLICATIONS Camera, household appliances, consumer electronics, etc. PIN CONFIGURATION (TOP VIEW) SEG10 SEG11 SEG12 SEG13 SEG14 SEG15 SEG16 SEG17 P30/SEG18 P31/SEG19 P32/SEG20 P33/SEG21 P34/SEG22 P35/SEG23 P36/SEG24 P37/SEG25 P00/SEG26 P01/SEG27 P02/SEG28 P03/SEG29 P04/SEG30 P05/SEG31 P06/SEG32 P07/SEG33 P10/SEG34 P11/SEG35 P12/SEG36 P13/SEG37 P14/SEG38 P15/SEG39 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 SEG9 SEG8 SEG7 SEG6 SEG5 SEG4 SEG3 SEG2 SEG1 SEG0 VCC VREF AVSS COM3 COM2 COM1 COM0 VL3 VL2 C2 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 1 M38268MCLXXXFP 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 P16 P17 P20 P21 P22 P23 P24 P25 P26 P27 VSS XOUT XIN XCOUT XCIN RESET P70/INT0 P71 P72 P73 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Package type : 100P6S-A Fig. 1 Pin configuration of M38268MCLXXXFP C1 VL1 P67/AN7 P66/AN6 P65/AN5 P64/AN4 P63/SCLK22/AN3 P62/SCLK21/AN2 P61/SOUT2/AN1 P60/SIN2/AN0 P57/ADT/DA2 P56/DA1 P55/CNTR1 P54/CNTR0 P53/RTP1 P52/RTP0 P51/PWM1 P50/PWM0 P47/SRDY1 P46/SCLK1 P45/TXD P44/RXD P43/φ/TOUT P42/INT2 P41/INT1 P40 P77 P76 P75 P74 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER PIN CONFIGURATION (TOP VIEW) 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 SEG13 SEG14 SEG15 SEG16 SEG17 P30/SEG18 P31/SEG19 P32/SEG20 P33/SEG21 P34/SEG22 P35/SEG23 P36/SEG24 P37/SEG25 P00/SEG26 P01/SEG27 P02/SEG28 P03/SEG29 P04/SEG30 P05/SEG31 P06/SEG32 P07/SEG33 P10/SEG34 P11/SEG35 P12/SEG36 P13/SEG37 SEG12 SEG11 SEG10 SEG9 SEG8 SEG7 SEG6 SEG5 SEG4 SEG3 SEG2 SEG1 SEG0 VCC VREF AVSS COM3 COM2 COM1 COM0 VL3 VL2 C2 C1 VL1 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 50 49 48 47 46 45 44 43 42 41 40 39 M38268MCLXXXGP 38 37 36 35 34 33 32 31 30 29 28 27 26 P14/SEG38 P15/SEG39 P16 P17 P20 P21 P22 P23 P24 P25 P26 P27 VSS XOUT XIN XCOUT XCIN RESET P70/INT0 P71 P72 P73 P74 P75 P76 Package type : 100P6Q-A Fig. 2 Pin configuration of M38268MCLXXXGP 2 P67/AN7 P66/AN6 P65/AN5 P64/AN4 P63/SCLK22/AN3 P62/SCLK21/AN2 P61/SOUT2/AN1 P60/SIN2/AN0 P57/ADT/DA2 P56/DA1 P55/CNTR1 P54/CNTR0 P53/RTP1 P52/RTP0 P51/PWM1 P50/PWM0 P47/SRDY1 P46/SCLK1 P45/TXD P44/RXD P43/φ/TOUT P42/INT2 P41/INT1 P40 P77 FUNCTIONAL BLOCK DIAGRAM (Package : 100P6S-A) Reset input (5V) (0V) VS S 40 Clock input RESET 35 91 Clock output VC C X IN X OUT 38 39 D A2 D A1 CNTR0,CNTR1 INT0 SI/O2(8) ADT 36 37 27 28 29 30 31 32 33 34 3 4 5 6 78 9 10 92 93 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 65 66 67 68 69 70 71 72 41 42 43 44 45 46 47 48 Key input (Key-on wake up) interrupt X COUT X CIN φ INT1,INT2 P7(8) P6(8) P5(8) P4(8) P3(8) Real time port function Fig. 3 Functional block diagram Data bus 2 Clock generating circuit CPU A ROM X Y S PC H Timer X (16) Timer Y (16) D-A2/CTCSS Timer 1 (8) Timer 2 (8) Timer 3 (8) D-A1/DTMF PS PCL LCD display RAM (20 bytes) RAM 1 100 99 98 97 96 95 94 VL 1 C1 C2 VL 2 VL 3 COM0 COM1 COM2 COM3 X CIN XCIN Subclock input X COUT φ XCOUT Subclock output LCD drive control circuit 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 75 74 73 Watchdog timer Reset A-D converter (8) TOUT PWM(8) SI/O1 (8) SEG0 SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 SEG7 SEG8 SEG9 SEG10 SEG11 SEG12 SEG13 SEG14 SEG15 SEG16 SEG17 P2(8) P1(8) P0(8) 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 XCIN XCOUT VR E F AVSS Sub-clock Sub-clock I/O port P7 input output I/O port P6 I/O port P5 I/O port P4 Output port P3 I/O port P2 I/O port P1 I/O port P0 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER 3 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER PIN DESCRIPTION Table 1 Pin description (1) Pin VCC, VSS VREF AVSS Name Power source Analog reference voltage Analog power source Reset input Clock input Clock output Function Function except a port function •Apply voltage of 2.5 V to 5.5 V (2.2 V to 5.5 V for low voltage version) to VCC, and 0 V to VSS. •Reference voltage input pin for A-D converter. •GND input pin for A-D converter. •Connect to VSS. •Reset input pin for active “L”. •Input and output pins for the main clock generating circuit. •Connect a ceramic resonator or a quartz-crystal oscillator between the XIN and XOUT pins to set the oscillation frequency. •If an external clock is used, connect the clock source to the XIN pin and leave the XOUT pin open. A feedback resistor is built-in. RESET XIN XOUT VL1–VL3 C1, C2 COM0–COM3 LCD power source Charge-pump capacitor pin Common output •Input 0 ≤ VL1 ≤ VL2 ≤ VL3 voltage. •Input 0 – VL3 voltage to LCD. (0 ≤ VL1 ≤ VL2 ≤ VL3 when a voltage is multiplied.) •External capacitor pins for a voltage multiplier (3 times) of LCD contorl. •LCD common output pins. •COM2 and COM3 are not used at 1/2 duty ratio. •COM3 is not used at 1/3 duty ratio. •LCD segment output pins. •8-bit I/O port. •CMOS compatible input level. •CMOS 3-state output structure. •Pull-up control is enabled. •I/O direction register allows each 8-bit pin to be programmed as either input or output. •LCD segment output pins SEG0–SEG17 P00/SEG26– P07/SEG33 Segment output I/O port P0 P10/SEG34– P15/SEG39 I/O port P1 •6-bit I/O port with same function as port P0. •CMOS compatible input level. •CMOS 3-state output structure. •Pull-up control is enabled. •I/O direction register allows each 6-bit pin to be programmed as either input or output. P16, P17 •2-bit I/O port. •CMOS compatible input level. •CMOS 3-state output structure. •I/O direction register allows each pin to be individually programmred as either input or output. •Pull-up control is enabled. •8-bit I/O port with same function as P16 and P17. •CMOS compatible input level. •CMOS 3-state output structure. •Pull-up control is enabled. P20 – P27 I/O port P2 •Key input (key-on wake-up) interrupt input pins P30/SEG18 – P37/SEG25 Output port P3 •8-bit output port with same function as port P0. •CMOS 3-state output structure. •Port output control is enabled. •LCD segment output pins 4 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER Table 2 Pin description (2) Pin P40 Name I/O port P4 Function •1-bit I/O port with same function as P16 and P17. •CMOS compatible input level. •N-channel open-drain output structure. P41/INT1, P42/INT2 P43/φ/TOUT P44/RXD, P45/TXD, P46/SCLK1, P47/SRDY1 P50/PWM0, P51/PWM1 P52/RTP0, P53/RTP1 P54/CNTR0, P55/CNTR1 P56/DA1, P57/ADT/DA2 P60/AN0/SIN2, P61/AN1/SOUT2, P62/AN2/SCLK21, P63/AN3/SCLK22 P64/AN4– P67/AN7 P70/INT0 P71–P77 Input port P7 I/O port P7 •1-bit input port. •7-bit I/O port with same function as P16 and P17. •CMOS compatible input level. •N-channel open-drain output structure. XCOUT XCIN Sub-clock output Sub-clock input •Sub-clock generating circuit I/O pins. (Connect a resonator. External clock cannot be used.) I/O port P6 •8-bit I/O port with same function as P16 and P17. •CMOS compatible input level. •CMOS 3-state output structure. •Pull-up control is enabled. •A-D conversion input pins •Interrupt input pin •7-bit I/O port with same function as P16 and P17. •CMOS compatible input level. •CMOS 3-state output structure. •Pull-up control is enabled. •φ clock output pin •Timer 2 output pin •Serial I/O1 I/O pins •Interrupt input pins Function except a port function I/O port P5 •8-bit I/O port with same function as P16 and P17. •CMOS compatible input level. •CMOS 3-state output structure. •Pull-up control is enabled. •PWM function pins •Real time port function pins •Timer X, Y function pins •D-A conversion output pins •A-D conversion input pins •Serial I/O2 I/O pins 5 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER PART NUMBERING Product M3826 8 M C L XXX FP Package type FP : 100P6S-A package GP : 100P6Q-A package FS : 100D0 ROM number Omitted in One Time PROM version shipped in blank and EPROM version. Characteristics – :Standard L : Low voltage version ROM/PROM size 1 : 4096 bytes 2 : 8192 bytes 3 : 12288 bytes 4 : 16384 bytes 5 : 20480 bytes 6 : 24576 bytes 7 : 28672 bytes 8 : 32768 bytes 9 : 36864 bytes A : 40960 bytes B : 45056 bytes C : 49152 bytes D : 53248 bytes E : 57344 bytes F : 61440 bytes The first 128 bytes and the last 2 bytes of ROM are reserved areas ; they cannot be used. Memory type M: Mask ROM version E: EPROM or One Time PROM version RAM size 0 : 192 bytes 1 : 256 bytes 2 : 384 bytes 3 : 512 bytes 4 : 640 bytes 5 : 768 bytes 6 : 896 bytes 7 : 1024 bytes 8 : 1536 bytes 9 : 2048 bytes A : 2560 bytes Fig. 4 Part numbering 6 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER GROUP EXPANSION (One Time PROM Version, EPROM Version) Mitsubishi plans to expand the 3826 group (One Time PROM version, EPROM version) as follows. Packages 100P6Q-A .................................. 0.5 mm-pitch plastic molded QFP 100P6S-A ................................ 0.65 mm-pitch plastic molded QFP 100D0 .......................................... Ceramic LCC (EPROM version) Memory Type Support for One Time PROM version, EPROM version. Memory Size ROM/PROM size ............................................... 32 K to 60 K bytes RAM size .......................................................... 1024 to 2560 bytes 3826 Group Memory Expansion Plan (One Time PROM version, EPROM version) ROM size (bytes) 60K 56K 52K 48K 44K 40K 36K 32K 28K 24K 20K 16K 12K 8K 4K Mass product M38267E8 Mass product M3826AEF 192 256 512 768 1024 1280 1536 1792 2048 2304 2560 RAM size (bytes) Products under development or planning :the development schedule and specification may be revised without notice. Fig. 5 Memory expansion plan (One Time PROM version, EPROM version) Currently products are listed below. Table 3. List of products (One Time PROM version, EPROM version) Product M38267E8FP M38267E8GP M3826AEFFP M3826AEFGP M3826AEFFS ROM size (bytes) ROM size for User in ( ) 32768 (32638) 61440 (61310) RAM size (bytes) 1024 Package 100P6S-A 100P6Q-A 100P6S-A 100P6Q-A 100D0 Remarks One Time PROM version (shipped in blank) One Time PROM version (shipped in blank) One Time PROM version (shipped in blank) One Time PROM version (shipped in blank) EPROM version As of Nov. 2001 2560 7 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER GROUP EXPANSION (Low Voltage Version) Mitsubishi plans to expand the 3826 group (low voltage version) as follows. Packages 100P6Q-A .................................. 0.5 mm-pitch plastic molded QFP 100P6S-A ................................ 0.65 mm-pitch plastic molded QFP Memory Type Support for Mask ROM version. Memory Size ROM/PROM size ............................................... 32 K to 60 K bytes RAM size .......................................................... 1024 to 2560 bytes 3826 Group Memory Expansion Plan (Low voltage version) ROM size (bytes) 60K 56K 52K 48K 44K 40K 36K 32K 28K 24K 20K 16K 12K 8K 4K Mass product M38267M8L Mass product M38268MCL Mass product M3826AMFL 192 256 512 768 1024 1280 1536 1792 2048 2304 2560 RAM size (bytes) Products under development or planning :the development schedule and specification may be revised without notice. Fig. 6 Memory expansion plan (Low voltage version) Currently products are listed below. Table 4. List of products (Low voltage version) Product M38267M8LXXXFP M38267M8LXXXGP M38268MCLXXXFP M38268MCLXXXGP M3826AMFLXXXFP M3826AMFLXXXGP ROM size (bytes) ROM size for User in ( ) 32768 (32638) 49152 (49022) 61440 (61310) RAM size (bytes) 1024 1536 2560 Package 100P6S-A 100P6Q-A 100P6S-A 100P6Q-A 100P6S-A 100P6Q-A Mask ROM version Mask ROM version Mask ROM version Mask ROM version Mask ROM version Mask ROM version Remarks As of Nov. 2001 8 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER FUNCTIONAL DESCRIPTION CENTRAL PROCESSING UNIT (CPU) The 3826 group uses the standard 740 family instruction set. Refer to the table of 740 family addressing modes and machine instructions or the 740 Family Software Manual for details on the instruction set. Machine-resident 740 family instructions are as follows: The FST and SLW instruction cannot be used. The STP, WIT, MUL, and DIV instruction can be used. [Stack Pointer (S)] The stack pointer is an 8-bit register used during subroutine calls and interrupts. This register indicates start address of stored area (stack) for storing registers during subroutine calls and interrupts. The low-order 8 bits of the stack address are determined by the contents of the stack pointer. The high-order 8 bits of the stack address are determined by the stack page selection bit. If the stack page selection bit is “ 0 ” , t he high-order 8 bits becomes “0016”. If the stack page selection bit is “1”, the high-order 8 bits becomes “0116”. The operations of pushing register contents onto the stack and popping them from the stack are shown in Figure 8. Store registers other than those described in Figure 8 with program when the user needs them during interrupts or subroutine calls. [Accumulator (A)] The accumulator is an 8-bit register. Data operations such as data transfer, etc., are executed mainly through the accumulator. [Index Register X (X)] The index register X is an 8-bit register. In the index addressing modes, the value of the OPERAND is added to the contents of register X and specifies the real address. [Program Counter (PC)] The program counter is a 16-bit counter consisting of two 8-bit registers PCH and PCL. It is used to indicate the address of the next instruction to be executed. [Index Register Y (Y)] The index register Y is an 8-bit register. In partial instruction, the value of the OPERAND is added to the contents of register Y and specifies the real address. b7 A b7 X b7 Y b7 S b15 PCH b7 b7 PCL b0 Accumulator b0 Index register X b0 Index register Y b0 Stack pointer b0 Program counter b0 Processor status register (PS) Carry flag Zero flag Interrupt disable flag Decimal mode flag Break flag Index X mode flag Overflow flag Negative flag NVTBD I ZC Fig. 7 740 Family CPU register structure 9 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER On-going Routine Interrupt request (Note) Execute JSR M (S) Push return address on stack (S) M (S) (S) (PCH) (S) – 1 (PCL) (S)– 1 M (S) (S) M (S) (S) M (S) (S) (PCH) (S) – 1 (PCL) (S) – 1 (PS) (S) – 1 Push contents of processor status register on stack Push return address on stack Subroutine Execute RTS POP return address from stack (S) (PCL) (S) (PCH) (S) + 1 M (S) (S) + 1 M (S) Interrupt Service Routine Execute RTI (S) (PS) (S) (PCL) (S) (PCH) (S) + 1 M (S) (S) + 1 M (S) (S) + 1 M (S) I Flag is set from “0” to “1” Fetch the jump vector POP contents of processor status register from stack POP return address from stack Note: Condition for acceptance of an interrupt Interrupt enable flag is “1” Interrupt disable flag is “0” Fig. 8 Register push and pop at interrupt generation and subroutine call Table 5 Push and pop instructions of accumulator or processor status register Push instruction to stack Accumulator Processor status register PHA PHP Pop instruction from stack PLA PLP 10 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER [Processor status register (PS)] The processor status register is an 8-bit register consisting of 5 flags which indicate the status of the processor after an arithmetic operation and 3 flags which decide MCU operation. Branch operations can be performed by testing the Carry (C) flag , Zero (Z) flag, Overflow (V) flag, or the Negative (N) flag. In decimal mode, the Z, V, N flags are not valid. • Bit 0: Carry flag (C) The C flag contains a carry or borrow generated by the arithmetic logic unit (ALU) immediately after an arithmetic operation. It can also be changed by a shift or rotate instruction. • Bit 1: Zero flag (Z) The Z flag is set if the result of an immediate arithmetic operation or a data transfer is “0”, and cleared if the result is anything other than “0”. • Bit 2: Interrupt disable flag (I) The I flag disables all interrupts except for the interrupt generated by the BRK instruction. Interrupts are disabled when the I flag is “1”. • Bit 3: Decimal mode flag (D) The D flag determines whether additions and subtractions are executed in binary or decimal. Binary arithmetic is executed when this flag is “0”; decimal arithmetic is executed when it is “1”. Decimal correction is automatic in decimal mode. Only the ADC and SBC instructions can be used for decimal arithmetic. • Bit 4: Break flag (B) The B flag is used to indicate that the current interrupt was generated by the BRK instruction. The BRK flag in the processor status register is always “0”. When the BRK instruction is used to generate an interrupt, the processor status register is pushed onto the stack with the break flag set to “1”. • Bit 5: Index X mode flag (T) When the T flag is “0”, arithmetic operations are performed between accumulator and memory. When the T flag is “1”, direct arithmetic operations and direct data transfers are enabled between memory locations. • Bit 6: Overflow flag (V) The V flag is used during the addition or subtraction of one byte of signed data. It is set if the result exceeds +127 to -128. When the BIT instruction is executed, bit 6 of the memory location operated on by the BIT instruction is stored in the overflow flag. • Bit 7: Negative flag (N) The N flag is set if the result of an arithmetic operation or data transfer is negative. When the BIT instruction is executed, bit 7 of the memory location operated on by the BIT instruction is stored in the negative flag. Table 6 Set and clear instructions of each bit of processor status register C flag Set instruction Clear instruction SEC CLC Z flag – – I flag SEI CLI D flag SED CLD B flag – – T flag SET CLT V flag – CLV N flag – – 11 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER [CPU Mode Register (CPUM)] 003B16 The CPU mode register contains the stack page selection bit and the internal system clock selection bit. The CPU mode register is allocated at address 003B16. b7 b0 CPU mode register (CPUM (CM) : address 003B16) Processor mode bits b1 b0 0 0 : Single-chip mode 0 1: 1 0 : Not available 1 1: Stack page selection bit 0 : 0 page 1 : 1 page Not used (returns “1” when read) (Do not write “0” to this bit) Port XC switch bit 0 : Oscillation stop 1 : XCIN–XCOUT oscillating function Main clock (XIN–XOUT) stop bit 0 : Oscillating 1 : Stopped Main clock division ratio selection bit 0 : f(XIN)/2 (high-speed mode) 1 : f(XIN)/8 (middle-speed mode) Internal system clock selection bit 0 : XIN–XOUT selected (middle-/high-speed mode) 1 : XCIN–XCOUT selected (low-speed mode) Fig. 9 Structure of CPU mode register 12 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER MEMORY Special Function Register (SFR) Area The Special Function Register area in the zero page contains control registers such as I/O ports and timers. Zero Page The 256 bytes from addresses 000016 t o 00FF 16 a re called the zero page area. The internal RAM and the special function registers (SFR) are allocated to this area. The zero page addressing mode can be used to specify memory and register addresses in the zero page area. Access to this area with only 2 bytes is possible in the zero page addressing mode. RAM RAM is used for data storage and for stack area of subroutine calls and interrupts. Special Page ROM The first 128 bytes and the last 2 bytes of ROM are reserved for device testing and the rest is user area for storing programs. The 256 bytes from addresses FF0016 to FFFF16 are called the special page area. The special page addressing mode can be used to specify memory addresses in the special page area. Access to this area with only 2 bytes is possible in the special page addressing mode. Interrupt Vector Area The interrupt vector area contains reset and interrupt vectors. RAM area RAM size (bytes) 192 256 384 512 640 768 896 1024 1536 2048 2560 Address XXXX16 00FF16 013F16 01BF16 023F16 02BF16 033F16 03BF16 043F16 063F16 083F16 0A3F16 044016 Not used (Note) Address YYYY16 F00016 E00016 D00016 C00016 B00016 A00016 900016 800016 700016 600016 500016 400016 300016 200016 100016 Address ZZZZ16 F08016 E08016 D08016 C08016 B08016 A08016 908016 808016 708016 608016 508016 408016 308016 208016 108016 FFFE16 Reserved ROM area FFFF16 Interrupt vector area Special page ROM FF0016 FFDC16 ZZZZ16 YYYY16 Reserved ROM area (128 bytes) Reserved area XXXX16 RAM 004016 005416 010016 000016 SFR area LCD display RAM area Zero page ROM area ROM size (bytes) 4096 8192 12288 16384 20480 24576 28672 32768 36864 40960 45056 49152 53248 57344 61440 Note: When RAM area exceeds 1024 bytes, the areas shown the table are used. Fig. 10 Memory map diagram 13 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER 000016 Port P0 (P0) 000116 Port P0 direction register (P0D) 000216 Port P1 (P1) 000316 Port P1 direction register (P1D) 000416 Port P2 (P2) 000516 Port P2 direction register (P2D) 000616 Port P3 (P3) 000716 Port P3 output control register (P3C) 000816 Port P4 (P4) 000916 Port P4 direction register (P4D) 000A16 Port P5 (P5) 000B16 Port P5 direction register (P5D) 000C16 Port P6 (P6) 000D16 Port P6 direction register (P6D) 000E16 Port P7 (P7) 000F16 Port P7 direction register (P7D) 001016 001116 001216 001316 001416 Reserved area (Note) 001516 Key input control register (KIC) 001616 PULL register A (PULLA) 001716 PULL register B (PULLB) 001816 Transmit/Receive buffer register(TB/RB) 001916 Serial I/O1 status register (SIO1STS) 001A16 Serial I/O1 control register (SIO1CON) 001B16 UART control register (UART CON) 001C16 Baud rate generator (BRG) 001D16 Serial I/O2 control register (SIO2CON) 001E16 Reserved area (Note) 001F16 Serial I/O2 register (SIO2) 002016 Timer X (low) (TXL) 002116 Timer X (high) (T XH) 002216 Timer Y (low) (TYL) 002316 Timer Y (high) (T YH) 002416 Timer 1 (T1) 002516 Timer 2 (T2) 002616 Timer 3 (T3) 002716 Timer X mode register (TXM) 002816 Timer Y mode register (TYM) 002916 Timer 123 mode register (T123M) 002A16 TOUT/φ output control register (CKOUT) 002B16 PWM control register (PWMCON) 002C16 PWM prescaler (PREPWM) 002D16 PWM register (PWM) 002E16 CTCSS timer (low) (CTCSSL) 002F16 CTCSS timer (high) (CTCSSH) 003016 DTMF high group timer (DTMFH) 003116 DTMF low group timer (DTMFL) 003216 D-A1 conversion register (DA1) 003316 D-A2 conversion register (DA2) 003416 A-D control register (ADCON) 003516 A-D conversion register (AD) 003616 D-A control register (DACON) 003716 Watchdog timer control register (WDTCON) 003816 Segment output enable register (SEG) 003916 LCD mode register (LM) 003A16 Interrupt edge selection register (INTEDGE) 003B16 CPU mode register (CPUM) 003C16 Interrupt request register 1(IREQ1) 003D16 Interrupt request register 2(IREQ2) 003E16 Interrupt control register 1(ICON1) 003F16 Interrupt control register 2(ICON2) Note: The register of reserved area can not be used. Fig. 11 Memory map of special function register (SFR) 14 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER I/O PORTS Direction Registers The I/O ports (ports P0, P1, P2, P4, P5, P6, P71–P77) have direction registers which determine the input/output direction of each individual pin. (Ports P00–P07 are shared with bit 0 of the port P0 direction register, and ports P10–P15 shared with bit 0 of the port P1 direction register.) Each bit in a direction register corresponds to one pin, and each pin can be set to be input port or output port. When “0” is written to the bit corresponding to a pin, that pin becomes an input pin. When “ 1 ” i s written to that bit, that pin becomes an output pin. If data is read from a pin set to output, the value of the port output latch is read, not the value of the pin itself. Pins set to input are floating. If a pin set to input is written to, only the port output latch is written to and the pin remains floating. b7 b0 PULL register A (PULLA : address 001616) P00, P01 pull-up P02, P03 pull-up P04–P07 pull-up P10–P13 pull-up P14, P15 pull-up P16, P17 pull-up P20–P23 pull-up P24–P27 pull-up b7 b0 PULL register B (PULLB : address 001716) P41–P43 pull-up P44–P47 pull-up P50–P53 pull-up P54–P57 pull-up P60–P63 pull-up P64–P67 pull-up Not used (return “0” when read) 0 : Disable 1 : Enable Port P3 Output Control Register Bit 0 of the port P3 output control register (address 0007 16) enables control of the output of ports P30–P37. When the bit is set to “1”, the port output function is valid. When resetting, bit 0 of the port P3 output control register is set to “0” (the port output function is invalid) and pulled up. Note: The contents of PULL register A and PULL register B do not affect ports programmed as the output port. Pull-up Control By setting the PULL register A (address 001616) or the PULL register B (address 001716), ports P0 to P2, P4 to P6 can control pullup with a program. However, the contents of PULL register A and PULL register B do not affect ports programmed as the output ports. The PULL register A setting is invalid for pins set to segment output with the segment output enable register. Fig. 12 Structure of PULL register A and PULL register B 15 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER Table 7 List of I/O port function (1) Pin P00/SEG26– P07/SEG33 P10/SEG34– P15/SEG39 Name Port P0 Input/Output Input/output, byte unit Input/output, 6-bit unit I/O Format CMOS compatible input level CMOS 3-state output CMOS compatible input level CMOS 3-state output CMOS compatible input level CMOS 3-state output CMOS compatible input level CMOS 3-state output CMOS 3-state output Key input (key-on wake-up) interrupt input LCD segment output Non-Port Function LCD segment output Related SFRs PULL register A Segment output enable register PULL register A Segment output enable register PULL register A Diagram No. (1) (2) (1) (2) (4) Port P1 LCD segment output P16 , P17 Input/output, individual bits Port P2 Input/output, individual bits P20–P27 PULL register A Interrupt control register2 Key input control register Segment output enable register P3 output enable register (3) P30/SEG18– P37/SEG25 Port P3 Output P40 Port P4 Input/output, individual bits CMOS compatible input level N-channel open-drain output CMOS compatible input level CMOS 3-state output External interrupt input Timer output φ output Interrupt edge selection register PULL register B Timer 123 mode register TOUT/φ output control register PULL register B Serial I/O1 control register Serial I/O1 status register UART control register (13) P41/INT1, P42/INT2 P43/φ/TOUT (4) (12) P44/RXD, P45/TXD, P46/SCLK1, P47/SRDY1 P50/PWM0, P51/PWM1 P52/RTP0, P53/RTP1 P54/CNTR0 P55/CNTR1 P56/DA1 P57/ADT/ DA2 Port P5 Input/output, individual bits CMOS compatible input level CMOS 3-state output Serial I/O1 function I/O (5) (6) (7) (8) (10) (9) (11) (14) (15) (15) PWM output Real time port function output Timer X function I/O Timer Y function input DA1 output DTMF input DA2 output CTCSS output A-D trigger input PULL register B PWM control register PULL register B Timer X mode register PULL register B Timer X mode register PULL register B Timer Y mode register PULL register B D-A control register PULL register B D-A control register A-D control register 16 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER Table 8 List of I/O port function (2) Pin P60/SIN2/AN0 P61/SOUT2/ AN1 P62/SCLK21/ AN2 P63/SCLK22 / AN3 P64/AN4– P67/AN7 P70/INT0 P71–P77 Port P7 Input Input/ output, individual bits Common Segment Output Output CMOS compatible input level CMOS compatible input level N-channel open-drain output LCD common output LCD segment output LCD mode register A-D conversion input External interrupt input A-D control register PULL register B Interrupt edge selection register Name Port P6 Input/Output Input/ output, individual bits I/O Format CMOS compatible input level CMOS 3-state output Non-Port Function A-D conversion input Serial I/O2 function I/O Related SFRS PULL register B A-D control register Serial I/O2 control register Diagram No. (17) (18) (19) (20) (16) (23) (13) COM0–COM3 SEG0–SEG17 (21) (22) Notes1: How to use double-function ports as function I/O ports, refer to the applicable sections. 2: Make sure that the input level at each pin is either 0 V or VCC during execution of the STP instruction. When an input level is at an intermediate potential, a current will flow VCC to VSS through the input-stage gate. 17 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER (1) Ports P01–P07, P11–P15 LCD drive timing Segment data Data bus Port latch Port direction register Pull-up VL2/VL3/VCC Segment/Port Segment Interface logic level shift circuit Port/Segment VL1/VSS Port Port direction register (2) Ports P00, P10 Direction register Segment data Data bus Port latch LCD drive timing Pull-up VL2/VL3/VCC Segment/Port Interface logic level shift circuit Segment VL1/VSS Port/Segment Port Port direction register (3) Port P3 LCD drive timing Segment data Data bus Port latch Interface logic level shift circuit Port/Segment Output control Pull-up VL2/VL3/VCC Segment/Port Segment VL1/VSS Port (4) Ports P16,P17,P2,P41,P42 Pull-up control (5) Port P44 Serial I/O1 enable bit Reception enable bit Pull-up control Direction register Direction register Data bus Port latch Data bus Port latch Key-on wake up interrupt input INT1, INT2 interrupt input Except P16, P17 Serial I/O1 input Fig. 13 Port block diagram (1) 18 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER (6) Port P45 Pull-up control P45/TxD P-channel output disable bit Serial I/O1 enable bit Transmission enable bit Direction register Data bus Port latch (7) Port P46 Serial I/O1 synchronization clock selection bit Serial I/O1 enable bit Serial I/O1 mode selection bit Serial I/O1 enable bit Direction register Data bus Pull-up control Port latch Serial I/O1 output Serial I/O1 clock output Serial I/O1 clock input (8) Port P47 Pull-up control Serial I/O1 mode selection bit Serial I/O1 enable bit SRDY1 output enable bit Direction register Data bus (9) Ports P52,P53 Pull-up control Direction register Port latch Data bus Port latch Serial I/O1 ready output Real time control bit Real time port data (10) Ports P50,P51 (11) Port P54 Pull-up control Direction register Pull-up control Direction register Data bus Data bus Port latch Port latch Pulse output mode Timer output PWM function enable bit PWM output CNTR0 interrupt input Fig. 14 Port block diagram (2) 19 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER (12) Port P43 (13) Ports P40,P71–P77 Pull-up control Direction register Direction register Data bus Port latch Data bus Port latch TOUT/φ output control Timer output TOUT/φ selection bit φ output (14) Port P55 (15) Ports P56,P57 Pull-up control Pull-up control Direction register Direction register Data bus Port latch Data bus Port latch CNTR1 interrupt input A-D trigger input Except P56 D-A converter output D-A1,D-A2 output enable bit (16) Ports P64–P67 Pull-up control (17) Port P60 Pull-up control Direction register Direction register Data bus Port latch Data bus Port latch A-D conversion input Analog input pin selection bit Serial I/O2 input A-D conversion input Analog input pin selection bit Fig. 15 Port block diagram (3) 20 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER (18) Port P61 P61/SOUT2 P-channel output disable bit Serial I/O2 transmit end signal Synchronous clock selection bit Serial I/O2 port selection bit Direction register Data bus Port latch Pull-up control (19) Port P62 Synchronous clock selection bit Serial I/O2 port selection bit Synchronous clock output pin selection bit Direction register Pull-up control Data bus Port latch Serial I/O2 output A-D conversion input Analog input pin selection bit Serial I/O2 clock output Serial I/O2 clock input A-D conversion input Analog input pin selection bit (20) Port P63 Pull-up control Synchronous clock selection bit Serial I/O2 port selection bit Synchronous clock output pin selection bit Direction register (21)COM0–COM3 VL 3 The gate input signal of each transistor is controlled by the LCD duty ratio and the bias value. Data bus Port latch VL 2 VL1 Serial I/O2 clock output A-D conversion input Analog input pin selection bit VSS (22)SEG0–SEG17 VL2/VL3 The voltage applied to the sources of Pchannel and N-channel transistors is the controlled voltage by the bias value. VL1/VSS (23) Port P70 Direction register Data bus Port latch INT0 input Fig. 16 Port block diagram (4) 21 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER INTERRUPTS Interrupts occur by seventeen sources: seven external, nine internal, and one software. Interrupt Operation By acceptance of an interrupt, the following operations are automatically performed: 1. The contents of the program counter and the processor status register are automatically pushed onto the stack. 2. The interrupt disable flag is set and the corresponding interrupt request bit is cleared. 3. The interrupt jump destination address is read from the vector table into the program counter. Interrupt Control Each interrupt is controlled by an interrupt request bit, an interrupt enable bit, and the interrupt disable flag except for the software interrupt set by the BRK instruction. An interrupt occurs if the corresponding interrupt request and enable bits are “1” and the interrupt disable flag is “0”. Interrupt enable bits can be set or cleared by software. Interrupt request bits can be cleared by software, but cannot be set by software. The BRK instruction cannot be disabled with any flag or bit. The I flag disables all interrupts except the BRK instruction interrupt. When several interrupts occur at the same time, the interrupts are received according to priority. Table 9 Interrupt vector addresses and priority Interrupt Source Reset (Note 2) INT0 INT1 Serial I/O1 reception Serial I/O1 transmission Timer X Timer Y Timer 2 Timer 3 CNTR0 CNTR1 Timer 1 INT2 Serial I/O2 Key input (Key-on wake-up) ADT Priority 1 2 3 4 5 Vector Addresses (Note 1) High Low FFFD16 FFFB16 FFF916 FFF716 FFF516 FFFC16 FFFA16 FFF816 FFF616 FFF416 Interrupt Request Generating Conditions At reset At detection of either rising or falling edge of INT0 input At detection of either rising or falling edge of INT1 input At completion of serial I/O1 data reception At completion of serial I/O1 transmit shift or when transmission buffer is empty At timer X underflow At timer Y underflow At timer 2 underflow At timer 3 underflow At detection of either rising or falling edge of CNTR0 input At detection of either rising or falling edge of CNTR1 input At timer 1 underflow At detection of either rising or falling edge of INT2 input At completion of serial I/O2 data transmission or reception At falling of conjunction of input level for port P2 (at input mode) At falling edge of ADT input Remarks Non-maskable External interrupt (active edge selectable) External interrupt (active edge selectable) Valid when serial I/O1 is selected Valid when serial I/O1 is selected 6 7 8 9 10 11 12 13 14 15 16 FFF316 FFF116 FFEF16 FFED16 FFEB16 FFE916 FFE716 FFE516 FFE316 FFE116 FFDF16 FFF216 FFF016 FFEE16 FFEC16 FFEA16 FFE816 FFE616 FFE416 FFE216 FFE016 FFDE16 External interrupt (active edge selectable) External interrupt (active edge selectable) External interrupt (active edge selectable) Valid when serial I/O2 is selected External interrupt (valid at falling) Valid when ADT interrupt is selected External interrupt (valid at falling) Valid when A-D interrupt is selected Non-maskable software interrupt A-D conversion BRK instruction 17 FFDD16 FFDC16 At completion of A-D conversion At BRK instruction execution Notes1: Vector addresses contain interrupt jump destination addresses. 2: Reset function in the same way as an interrupt with the highest priority. 22 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER sNotes on interrupts When setting the followings, the interrupt request bit may be set to “1”. •When setting external interrupt active edge Related register: Interrupt edge selection register (address 3A16) Timer X mode register (address 2716) Timer Y mode register (address 2816) •When switching interrupt sources of an interrupt vector address where two or more interrupt sources are allocated Related register: Interrupt source selection bit of A-D control regsiter (bit 6 of address 3416) When not requiring for the interrupt occurrence synchronous with these setting, take the following sequence. ➀Set the corresponding interrupt enable bit to “0” (disabled). ➁Set the interrupt edge select bit (polarity switch bit) or the interrupt source select bit to “1”. ➂Set the corresponding interrupt request bit to “0” after 1 or more instructions have been executed. ➃Set the corresponding interrupt enable bit to “1” (enabled). Interrupt request bit Interrupt enable bit Interrupt disable flag (I) BRK instruction Reset Interrupt request Fig. 17 Interrupt control b7 b0 Interrupt edge selection register (INTEDGE : address 003A16) INT0 interrupt edge selection bit INT1 interrupt edge selection bit INT2 interrupt edge selection bit Not used (return “0” when read) 0 : Falling edge active 1 : Rising edge active b7 b0 Interrupt request register 1 (IREQ1 : address 003C16) INT0 interrupt request bit INT1 interrupt request bit Serial I/O1 receive interrupt request bit Serial I/O1 transmit interrupt request bit Timer X interrupt request bit Timer Y interrupt request bit Timer 2 interrupt request bit Timer 3 interrupt request bit b7 b0 Interrupt request register 2 (IREQ2 : address 003D16) CNT R0 interrupt request bit CNT R1 interrupt request bit Timer 1 interrupt request bit INT2 interrupt request bit Serial I/O2 interrupt request bit Key input interrupt request bit ADT/AD conversion interrupt request bit Not used (returns “0” when read) 0 : No interrupt request issued 1 : Interrupt request issued b7 b0 Interrupt control register 1 (ICON1 : address 003E16) INT0 interrupt enable bit INT1 interrupt enable bit Serial I/O1 receive interrupt enable bit Serial I/O1 transmit interrupt enable bit Timer X interrupt enable bit Timer Y interrupt enable bit Timer 2 interrupt enable bit Timer 3 interrupt enable bit b7 b0 Interrupt control register 2 (ICON2 : address 003F16) CNT R0 interrupt enable bit CNT R1 interrupt enable bit Timer 1 interrupt enable bit INT2 interrupt enable bit Serial I/O2 interrupt enable bit Key input interrupt enable bit ADT/AD conversion interrupt enable bit Not used (returns “0” when read) (Do not write “1” to this bit) 0 : Interrupts disabled 1 : Interrupts enabled Fig. 18 Structure of interrupt-related registers 23 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER Key Input Interrupt (Key-on Wake Up) A Key-on wake up interrupt request is generated by applying “L” level voltage to any pin of port P2 that have been set to input mode. In other words, it is generated when AND of input level goes from “1” to “0”. An example of using a key input interrupt is shown in Figure 19, where an interrupt request is generated by pressing one of the keys consisted as an active-low key matrix which inputs to ports P20–P23. Port PXx “L” level output PULL register A Bit 2 = “1” ✽ P27 output Port P27 Key input control register = “1” direction register = “1” ✽✽ Port P27 latch Key input interrupt request ✽ P26 output Port P26 Key input control register = “1” direction register = “1” ✽ ✽ Port P26 latch Key input control register = “1” Port P25 direction register = “1” ✽ P25 output ✽✽ Port P25 latch Key input control register = “1” Port P24 direction register = “1” ✽ P24 output ✽✽ Port P24 latch Key input control register = “1” Port P23 direction register = “0” ✽ P23 input ✽✽ Port P23 latch Port P2 Input reading circuit Key input control register = “1” Port P22 direction register = “0” ✽ P22 input ✽✽ Port P22 latch Key input control register = “1” Port P21 direction register = “0” ✽ P21 input ✽✽ Port P21 latch Port P20 Key input control register = “1” direction register = “0” ✽ P20 input ✽✽ Port P20 latch ✽ P-channel transistor for pull-up ✽ ✽ CMOS output buffer Fig. 19 Connection example when using key input control register, key input interrupt and port P2 block diagram 24 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER TIMERS The 3826 group has five timers: timer X, timer Y, timer 1, timer 2, and timer 3. Timer X and timer Y are 16-bit timers, and timer 1, timer 2, and timer 3 are 8-bit timers. All timers are down count timers. When the timer reaches “00 16”, an underflow occurs at the next count pulse and the corresponding timer latch is reloaded into the timer and the count is continued. When a timer underflows, the interrupt request bit corresponding to that timer is set to “1”. Read and write operation on 16-bit timer must be performed for both high- and low-order bytes. When reading a 16-bit timer, read the high-order byte first. When writing to a 16-bit timer, write the low-order byte first. The 16-bit timer cannot perform the correct operation when reading during the write operation, or when writing during the read operation. Real time port control bit “1” P52/RTP0 P52 direction register “0 ” Data bus QD Latch P52 data for real time port P52 latch Real time port control bit “1” P53/RTP1 P53 direction register “0 ” P53 latch QD Latch P53 data for real time port Real time port control bit “0” “1 ” Timer X mode register write signal P54/CNTR0 f(XIN)/16 (f(XCIN)/16 when φ = XCIN/2) Timer X operatCNTR0 active ing mode bits edge switch bit “00”,“01”,“11” “0 ” "10" Pulse width “1” measurement mode CNTR0 active edge switch bit “0” Q Timer X stop control bit Timer X (low) latch (8) Timer X (low) (8) Timer X write control bit Timer X (high) latch (8) Timer X (high) (8) Timer X interrupt request Pulse output mode S T Q Pulse width HL continuously measurement mode Rising edge detection Period measurement mode P54 direction register P54 latch Pulse output mode “1 ” CNTR1 active edge switch bit P55/CNTR1 “0 ” Falling edge detection f(XIN)/16 (f(XCIN)/16 when φ = XCIN/2) Timer Y stop control bit "00","01","11" "10" Timer Y operating mode bits Timer Y (low) latch (8) Timer Y (low) (8) Timer Y (high) latch (8) Timer Y (high) (8) Timer Y interrupt request “1 ” f(XIN)/16 (f(XCIN)/16 when φ = XCIN/2) Timer 1 count source selection bit “0 ” Timer 1 latch (8) XCIN “1 ” Timer 1 (8) Timer 2 count source selection bit Timer 2 latch (8) “0 ” Timer 2 (8) “1 ” f(XIN)/16 (f(XCIN)/16 when φ = XCIN/2) Timer 2 write control bit Timer 1 interrupt request Timer 2 interrupt request TOUT output control bit P43/φ/TOUT P43 direction register TOUT output TOUT output control bit active edge switch bit “0” QS P43 latch φ “1 ” T “0 ” Timer 3 latch (8) Timer 3 (8) “1 ” Timer 3 count source selection bit Timer 3 interrupt request φ output control bit Q f(XIN)/16 (f(XCIN)/16 when φ = XCIN/2) Fig. 20 Timer block diagram 25 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER Timer X Timer X is a 16-bit timer that can be selected in one of four modes and can be controlled the timer X write and the real time port by setting the timer X mode register. b7 b0 Timer X mode register (TXM : address 002716) Timer X write control bit 0 : Write value in latch and counter 1 : Write value in latch only Real time port control bit 0 : Real time port function invalid 1 : Real time port function valid P52 data for real time port P53 data for real time port Timer X operating mode bits b5 b4 0 0 : Timer mode 0 1 : Pulse output mode 1 0 : Event counter mode 1 1 : Pulse width measurement mode CNT R0 active edge switch bit 0 : Count at rising edge in event counter mode Start from “H” output in pulse output mode Measure “H” pulse width in pulse width measurement mode Falling edge active for CNTR0 interrupt 1 : Count at falling edge in event counter mode Start from “L” output in pulse output mode Measure “L” pulse width in pulse width measurement mode Rising edge active for CNT R0 interrupt Timer X stop control bit 0 : Count start 1 : Count stop (1) Timer mode The timer counts f(XIN)/16 (or f(XCIN)/16 in low-speed mode). (2) Pulse output mode Each time the timer underflows, a signal output from the CNTR 0 pin is inverted. Except for this, the operation in pulse output mode is the same as in timer mode. When using a timer in this mode, set the corresponding port P54 direction register to output mode. (3) Event counter mode The timer counts signals input through the CNTR0 pin. Except for this, the operation in event counter mode is the same as in timer mode. When using a timer in this mode, set the corresponding port P54 direction register to input mode. (4) Pulse width measurement mode The count source is f(XIN)/16 (or f(XCIN)/16 in low-speed mode). If CNTR0 active edge switch bit is “0”, the timer counts while the input signal of CNTR0 pin is at “H”. If it is “1”, the timer counts while the input signal of CNTR0 pin is at “L”. When using a timer in this mode, set the corresponding port P5 4 direction register to input mode. qTimer X Write Control If the timer X write control bit is “0”, when the value is written in the address of timer X, the value is loaded in the timer X and the latch at the same time. If the timer X write control bit is “1”, when the value is written in the address of timer X, the value is loaded only in the latch. The value in the latch is loaded in timer X after timer X underflows. If the value is written in latch only, unexpected value may be set in the high-order counter when the writing in high-order latch and the underflow of timer X are performed at the same timing. qReal Time Port Control While the real time port function is valid, data for the real time port are output from ports P5 2 a nd P5 3 e ach time the timer X underflows. (However, if the real time port control bit is changed from “0” to “1” after set of the real time port data, data are output independent of the timer X operation.) If the data for the real time port is changed while the real time port function is valid, the changed data are output at the next underflow of timer X. Before using this function, set the corresponding port direction registers to output mode. Fig. 21 Structure of timer X mode register sNote on CNTR0 interrupt active edge selection CNTR0 interrupt active edge depends on the CNTR0 active edge switch bit. 26 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER Timer Y Timer Y is a 16-bit timer that can be selected in one of four modes. b7 b0 Timer Y mode register (TYM : address 002816) Not used (return “0” when read) Timer Y operating mode bits b5 b4 0 0 : Timer mode 0 1 : Period measurement mode 1 0 : Event counter mode 1 1 : Pulse width HL continuously measurement mode CNT R1 active edge switch bit 0 : Count at rising edge in event counter mode Measure the falling edge to falling edge period in period measurement mode Falling edge active for CNTR1 interrupt 1 : Count at falling edge in event counter mode Measure the rising edge period in period measurement mode Rising edge active for CNT R1 interrupt Timer Y stop control bit 0 : Count start 1 : Count stop (1) Timer mode The timer counts f(XIN)/16 (or f(XCIN)/16 in low-speed mode). (2) Period measurement mode CNTR 1 i nterrupt request is generated at rising/falling edge of CNTR1 pin input signal. Simultaneously, the value in timer Y latch is reloaded in timer Y and timer Y continues counting down. Except for the above-mentioned, the operation in period measurement mode is the same as in timer mode. The timer value just before the reloading at rising/falling of CNTR1 pin input signal is retained until the timer Y is read once after the reload. The rising/falling timing of CNTR 1 p in input signal is found by CNTR1 interrupt. When using a timer in this mode, set the corresponding port P55 direction register to input mode. (3) Event counter mode The timer counts signals input through the CNTR1 pin. Except for this, the operation in event counter mode is the same as in timer mode. When using a timer in this mode, set the corresponding port P55 direction register to input mode. Fig. 22 Structure of timer Y mode register (4) Pulse width HL continuously measurement mode CNTR 1 i nterrupt request is generated at both rising and falling edges of CNTR1 pin input signal. Except for this, the operation in pulse width HL continuously measurement mode is the same as in period measurement mode. When using a timer in this mode, set the corresponding port P55 direction register to input mode. sNote on CNTR1 interrupt active edge selection CNTR1 interrupt active edge depends on the CNTR1 active edge switch bit. However, in pulse width HL continuously measurement mode, CNTR 1 i nterrupt request is generated at both rising and falling edges of CNTR1 pin input signal regardless of the setting of CNTR1 active edge switch bit. 27 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER Timer 1, Timer 2, Timer 3 Timer 1, timer 2, and timer 3 are 8-bit timers. The count source for each timer can be selected by timer 123 mode register. The timer latch value is not affected by a change of the count source. However, because changing the count source may cause an inadvertent count down of the timer. Therefore, rewrite the value of timer whenever the count source is changed. qTimer 2 Write Control If the timer 2 write control bit is “0”, when the value is written in the address of timer 2, the value is loaded in the timer 2 and the latch at the same time. If the timer 2 write control bit is “1”, when the value is written in the address of timer 2, the value is loaded only in the latch. The value in the latch is loaded in timer 2 after timer 2 underflows. qTimer 2 Output Control When the timer 2 (T OUT) is output enabled, an inversion signal from pin TOUT is output each time timer 2 underflows. In this case, set the port P56 shared with the port TOUT to the output mode. b7 b0 Timer 123 mode register (T123M :address 002916) TOUT output active edge switch bit 0 : Start at “H” output 1 : Start at “L” output TOUT/φ output control bit 0 : TOUT/φ output disabled 1 : TOUT/φ output enabled Timer 2 write control bit 0 : Write data in latch and counter 1 : Write data in latch only Timer 2 count source selection bit 0 : Timer 1 output 1 : f(XIN)/16 (or f(XCIN)/16 in low-speed mode) Timer 3 count source selection bit 0 : Timer 1 output 1 : f(XIN)/16 (or f(XCIN)/16 in low-speed mode) Timer 1 count source selection bit 0 : f(XIN)/16 (or f(XCIN)/16 in low-speed mode) 1 : f(XCIN) Not used (return “0” when read) Note: Internal clock φ is f(XCIN)/2 in the low-speed mode. sNote on Timer 1 to Timer 3 When the count source of timers 1 to 3 is changed, the timer counting value may be changed large because a thin pulse is generated in count input of timer. If timer 1 output is selected as the count source of timer 2 or timer 3, when timer 1 is written, the counting value of timer 2 or timer 3 may be changed large because a thin pulse is generated in timer 1 output. Therefore, set the value of timer in the order of timer 1, timer 2 and timer 3 after the count source selection of timer 1 to 3. Fig. 23 Structure of timer 123 mode register 28 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER SERIAL I/O Serial I/O1 Serial I/O1 can be used as either clock synchronous or asynchronous (UART) serial I/O. A dedicated timer (baud rate generator) is also provided for baud rate generation. (1) Clock Synchronous Serial I/O Mode Clock synchronous serial I/O mode can be selected by setting the mode selection bit of the serial I/O1 control register to “1”. For clock synchronous serial I/O1, the transmitter and the receiver must use the same clock. If an internal clock is used, transfer is started by a write signal to the TB/RB (address 001816). Data bus Address 001816 Receive buffer register Serial I/O1 control register Address 001A16 Receive buffer full flag (RBF) Receive interrupt request (RI) Clock control circuit P44/RXD Receive shift register Shift clock P46/SCL K1 Serial I/O1 synchronization clock selection bit Frequency division ratio 1/(n+1) Baud rate generator BRG count source selection bit XIN 1/4 P47/SRDY1 F/F Falling-edge detector 1/4 Address 001C16 Clock control circuit Shift clock P45/TXD Transmit shift register T ran smit buffer register (T B) Transmit shift register shift completion flag (TSC) Transmit interrupt source selection bit Transmit interrupt request (TI) Transmit buffer empty flag (TBE) Address 001916 Address 001816 Data bus Serial I/O1 status register Fig. 24 Block diagram of clock synchronous serial I/O1 Transfer shift clock (1/2 to 1/2048 of the internal clock, or an external clock) Serial output TXD Serial input RXD D0 D0 D1 D1 D2 D2 D3 D3 D4 D4 D5 D5 D6 D6 D7 D7 Receive enable signal SRDY1 Write signal to receive/transmit buffer register (address 001816) TBE = 0 RBF = 1 TSC = 1 Overrun error (OE) detection TBE = 1 TSC = 0 Notes 1 : T he transmit interrupt (TI) can be generated either when the transmit buffer register has emptied (TBE = 1) or after the transmit shift operation has ended (TSC=1), by setting the transmit interrupt source selection bit (TIC) of the serial I/O1 control register. 2 : If data is written to the transmit buffer register when TSC=0, the transmit clock is generated continuously and serial data is output continuously from the TXD pin. 3 : T he receive interrupt (RI) is set when the receive buffer full flag (RBF) becomes “1” . Fig. 25 Operation of clock synchronous serial I/O1 function 29 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER (2) Asynchronous Serial I/O (UART) Mode Clock asynchronous serial I/O mode (UART) can be selected by clearing the serial I/O mode selection bit of the serial I/O1 control register to “0”. Eight serial data transfer formats can be selected, and the transfer formats used by a transmitter and receiver must be identical. The transmit and receive shift registers each have a buffer regis- ter, but the two buffers have the same address in memory. Since the shift register cannot be written to or read from directly, transmit data is written to the transmit buffer, and receive data is read from the receive buffer. The transmit buffer can also hold the next data to be transmitted, and the receive buffer register can hold a character while the next character is being received. Data bus Address 001816 Serial I/O1 control register Address 001A16 Receive buffer full flag (RBF) Receive interrupt request (RI) 1/16 PE FE SP detector Clock control circuit Serial I/O1 synchronization clock selection bit P46/SCL K1 BRG count source selection bit XI N 1/4 Frequency division ratio 1/(n+1) Baud rate generator Address 001C16 ST/SP/PA generator P44/RXD OE Receive buffer register Character length selection bit STdetector 7 bits Receive shift register 8 bits UART control register Address 001B16 1/16 P45/TXD Character length selection bit Transmit buffer register Transmit shift register shift completion flag (TSC) Transmit interrupt source selection bit Transmit interrupt request (TI) Transmit buffer empty flag (TBE) Serial I/O1 status register Address 001916 Transmit shift register Address 001816 Data bus Fig. 26 Block diagram of UART serial I/O1 Transmit or receive clock Transmit buffer write signal TBE=0 TSC=0 TBE=1 Serial output TxD ST D0 TBE=0 TBE=1 D1 1 start bit 7 or 8 data bits 1 or 0 parity bit 1 or 2 stop bit (s) SP ST D0 D1 ✽ Generated TSC=1✽ SP at 2nd bit in 2-stop-bit mode Receive buffer read signal RBF=1 Serial input RxD ST D0 D1 SP ST D0 RBF=0 RBF=1 D1 SP Notes 1 : Error flag detection occurs at the same time that the RBF flag becomes “1” (at 1st stop bit, during reception). 2 : T he transmit interrupt (TI) can be generated to occur when either the TBE or TSC flag becomes “1”, depending on the setting of the transmit interrupt source selection bit (TIC) of the serial I/O1 control register. 3 : T he receive interrupt (RI) is set when the RBF flag becomes “1”. Fig. 27 Operation of UART serial I/O1 function 30 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER [Transmit Buffer/Receive Buffer Register (TB/ RB)] 001816 The transmit buffer register and the receive buffer register are located at the same address. The transmit buffer register is writeonly and the receive buffer register is read-only. If a character bit length is 7 bits, the MSB of data stored in the receive buffer register is “0”. [Serial I/O1 Status Register (SIO1STS)] 001916 The read-only serial I/O1 status register consists of seven flags (bits 0 to 6) which indicate the operating status of the serial I/O1 function and various errors. Three of the flags (bits 4 to 6) are valid only in UART mode. The receive buffer full flag (bit 1) is cleared to “0” when the receive buffer is read. If there is an error, it is detected at the same time that data is transferred from the receive shift register to the receive buffer register, and the receive buffer full flag is set. A write to the serial I/O1 status register clears all the error flags OE, PE, FE, and SE (bit 3 to bit 6, respectively). Writing “0” to the serial I/O1 enable bit SIOE (bit 7 of the Serial I/O1 Control Register) also clears all the status flags, including the error flags. All bits of the serial I/O1 status register are initialized to “0” at reset, but if the transmit enable bit (bit 4) of the serial I/O1 control register has been set to “1”, the transmit shift register shift completion flag (bit 2) and the transmit buffer empty flag (bit 0) become “1”. [Serial I/O1 Control Register (SIO1CON)] 001A16 The serial I/O1 control register contains eight control bits for the serial I/O1 function. [UART Control Register (UARTCON)] 001B16 The UART control register consists of four control bits (bits 0 to 3) which are valid when asynchronous serial I/O is selected and set the data format of an data transfer. One bit in this register (bit 4) is always valid and sets the output structure of the P45/TXD pin. [Baud Rate Generator (BRG)] 001C16 The baud rate generator determines the baud rate for serial transfer. The baud rate generator divides the frequency of the count source by 1/(n + 1), where n is the value written to the baud rate generator. sNotes on serial I/O When setting the transmit enable bit to “1”, the serial I/O1 transmit interrupt request bit is automatically set to “1”. When not requiring the interrupt occurrence synchronous with the transmission enalbed, take the following sequence. ➀Set the serial I/O1 transmit interrupt enable bit to “0” (disabled). ➁Set the transmit enable bit to “1”. ➂Set the serial I/O1 transmit interrupt request bit to “0” after 1 or more instructions have been executed. ➃Set the serial I/O1 transmit interrupt enable bit to “1” (enabled). 31 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER b7 b0 Serial I/O1 status register (SIO1STS : address 001916) Transmit buffer empty flag (TBE) 0: Buffer full 1: Buffer empty Receive buffer full flag (RBF) 0: Buffer empty 1: Buffer full Transmit shift register shift completion flag (TSC) 0: Transmit shift in progress 1: Transmit shift completed Overrun error flag (OE) 0: No error 1: Overrun error Parity error flag (PE) 0: No error 1: Parity error Framing error flag (FE) 0: No error 1: Framing error Summing error flag (SE) 0: (OE) U (PE) U (FE) =0 1: (OE) U (PE) U (FE) =1 Not used (returns “1” when read) b7 b0 Serial I/O1 control register (SIO1CON : address 001A16) BRG count source selection bit (CSS) 0: f(XIN) 1: f(XIN)/4 Serial I/O1 synchronization clock selection bit (SCS) 0: BRG output divided by 4 when clock synchronous serial I/O is selected. BRG output divided by 16 when UART is selected. 1: External clock input when clock synchronous serial I/O is selected. External clock input divided by 16 when UART is selected. SRDY1 output enable bit (SRDY) 0: P47 pin operates as ordinary I/O pin 1: P47 pin operates as SRDY1 output pin Transmit interrupt source selection bit (TIC) 0: Interrupt when transmit buffer has emptied 1: Interrupt when transmit shift operation is completed Transmit enable bit (TE) 0: Transmit disabled 1: Transmit enabled Receive enable bit (RE) 0: Receive disabled 1: Receive enabled Serial I/O1 mode selection bit (SIOM) 0: Asynchronous serial I/O (UART) 1: Clock synchronous serial I/O Serial I/O1 enable bit (SIOE) 0: Serial I/O1 disabled (pins P44–P47 operate as ordinary I/O pins) 1: Serial I/O1 enabled (pins P44–P47 operate as serial I/O pins) b7 b0 UART control regi ster (UART CON : address 001B16) Character length selection bit (CHAS) 0: 8 bits 1: 7 bits Parity enable bit (PARE) 0: Parity checking disabled 1: Parity checking enabled Parity selection bit (PARS) 0: Even parity 1: Odd parity Stop bit length selection bit (ST PS) 0: 1 stop bit 1: 2 stop bits P45/TXD P-channel output disable bit (POFF) 0: CMOS output (in output mode) 1: N-channel open-drain output (in output mode) Not used (return “1” when read) Fig. 28 Structure of serial I/O1 control registers 32 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER Serial I/O2 The serial I/O2 function can be used only for clock synchronous serial I/O. For clock synchronous serial I/O2, the transmitter and the receiver must use the same clock. When the internal clock is used, transfer is started by a write signal to the serial I/O2 register. When an internal clock is selected as the synchronous clock of the serial I/O2, either P62 or P63 can be selected as an output pin of the synchronous clock. In this case, the pin that is not selected as an output pin of the synchronous clock functions as a port. b7 b0 Serial I/O2 control register (SIO2CON : address 001D16) Internal synchronous clock select bits b2 b1 b0 0 0 0: f(XIN)/8 0 0 1: f(XIN)/16 0 1 0: f(XIN)/32 0 1 1: f(XIN)/64 1 0 0: 1 0 1: Do not set 1 1 0: f(XIN)/128 1 1 1: f(XIN)/256 Serial I/O2 port selection bit 0: I/O port 1: SOUT2,SCLK21/SCLK22 signal output P61/SOUT2 P-channel output disable bit 0: CMOS output (in output mode) 1: N-channel open-drain output (in output mode) Transfer direction selection bit 0: LSB first 1: MSB first Synchronous clock selection bit 0: External clock 1: Internal clock Synchronous clock output pin selection bit 0: SCLK21 1: SCLK22 [Serial I/O2 Control Register (SIO2CON)] 001D16 The serial I/O2 control register contains 8 bits which control various serial I/O2 functions. Fig. 29 Structure of serial I/O2 control register 1/8 1/16 Internal synchronous clock select bits XIN Divider 1/32 1/64 1/128 1/256 Data bus P63 latch (Note) Synchronous clock selection bit Synchronous circuit “1” P63/SCLK22 SCLK2 “0” External clock P62 latch “0” P62/SCLK21 (Note) “1” P61 latch “0” Serial I/O counter 2 (3) Serial I/O2 interrupt request P61/SOUT2 “1” Serial I/O2 port selection bit P60/SIN2 Serial I/O shift register 2 (8) Note: It is selected by the synchronous clock selection bit, the synchronous clock output pin selection bit, and the serial I/O port selection bit. Fig. 30 Block diagram of serial I/O2 function 33 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER Transfer clock (Note 1) Serial I/O2 register write signal (Note 2) Serial I/O2 output S OUT2 Serial I/O2 input S IN2 D0 D1 D2 D3 D4 D5 D6 D7 Serial I/O2 interrupt request bit set Notes 1: When the internal clock is selected as the transfer clock, the divide ratio can be selected by setting bits 0 to 2 of the serial I/O2 control register. 2: When the internal clock is selected as the transfer clock, the S OUT2 pin goes to high impedance after transfer completion. When the external clock is selected as the transfer clock, a content of the serial I/O shift register is continued to shift during inputting a transfer clock. The S OUT2 pin does not go to high impedance after transfer completion. Fig. 31 Timing of serial I/O2 function 34 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER PULSE WIDTH MODULATION (PWM) The 3826 group has a PWM function with an 8-bit resolution, based on a signal that is the clock input XIN or that clock input divided by 2. PWM Operation When at least either bit 1 (PWM 0 f unction enable bit) or bit 2 (PWM1 function enable bit) of the PWM control register is set to “ 1 ” , operation starts by initializing the PWM output circuit, and pulses are output starting at an “H”. When one PWM output is enabled and that the other PWM output is enabled, PWM output which is enabled to output later starts pulse output from halfway. When the PWM register or PWM prescaler is updated during PWM output, the pulses will change in the cycle after the one in which the change was made. Data Setting The PWM output pin also functions as ports P50 and P51. Set the PWM period by the PWM prescaler, and set the period during which the output pulse is an “H” by the PWM register. If PWM count source is f(XIN) and the value in the PWM prescaler is n and the value in the PWM register is m (where n = 0 to 255 and m = 0 to 255) : PWM period = 255 ✕ (n+1)/f(XIN) = 31.875 ✕ (n+1) µs (when f(XIN) = 8 MHz) Output pulse “H” period = PWM period ✕ m/255 = 0.125 ✕ (n+1) ✕ m µs (when f(XIN) = 8 MHz) 31.875 ✕ m ✕ (n+1) µs 255 PWM output T = [31.875 ✕ (n+1)] µs m: Contents of PWM register n : Contents of PWM prescaler T : PWM cycle (when f(X IN ) = 8 MHz) Fig. 32 Timing of PWM cycle Data bus PWM prescaler pre-latch PWM register pre-latch PWM1 function enable bit Transfer control circuit PWM prescaler latch Count source selection bit “0” XIN 1/2 “1” PWM prescaler PWM register latch Port P51 lacth Port P51 PWM circuit Port P50 Port P50 lacth PWM0 function enable bit Fig. 33 Block diagram of PWM function 35 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER b7 b0 PWM control register (PWMCON : address 002B16) Count source selection bit 0 : f(XIN) 1 : f(XIN)/2 PWM0 function enable bit 0 : PWM0 disabled 1 : PWM0 enabled PWM1 function enable bit 0 : PWM1 disabled 1 : PWM1 enabled Not used (return “0” when read) Fig. 34 Structure of PWM control register A B C B=C T2 T PWM (internal) stop T T T2 stop PWM 0 output Port Port PWM 1 output Port Port PWM register write signal (Changes from “A” to “B” during “H” period) PWM prescaler write signal (Changes from “T” to “T2” during PWM period) PWM 0 function enable bit PWM 1 function enable bit When the contents of the PWM register or PWM prescaler have changed, the PWM output will change from the next period after the change. Fig. 35 PWM output timing when PWM register or PWM prescaler is changed 36 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER A-D CONVERTER The functional blocks of the A-D converter are described below. Comparator and Control Circuit The comparator and control circuit compare an analog input voltage with the comparison voltage and store the result in the A-D conversion register. When an A-D conversion is completed, the control circuit sets the AD conversion completion bit and the AD interrupt request bit to “1”. Note that the comparator is constructed linked to a capacitor, so set f(XIN) to at least 500kHz during A-D conversion. Use the clock divided from the main clock XIN as the internal clock φ. [A-D Conversion Register (AD)] 003516 The A-D conversion register is a read-only register that contains the result of an A-D conversion. When reading this register during an A-D conversion, the previous conversion result is read. [A-D Control Register (ADCON)] 003416 The A-D control register controls the A-D conversion process. Bits 0 to 2 of this register select specific analog input pins. Bit 3 signals the completion of an A-D conversion. The value of this bit remains at “0” during an A-D conversion, then changes to “1” when the AD conversion is completed. Writing “ 0 ” t o this bit starts the A-D conversion. Bit 4 controls the transistor which breaks the through current of the resistor ladder. When bit 5, which is the AD external trigger valid bit, is set to “1”, this bit enables A-D conversion even by a falling edge of an ADT input. Set ports which share with ADT pins to input when using an A-D external trigger. b7 b0 A-D control register (ADCON : address 003416) Analog input pin selection bits 0 0 0 : P60/AN0 0 0 1 : P61/AN1 0 1 0 : P62/AN2 0 1 1 : P63/AN3 1 0 0 : P64/AN4 1 0 1 : P65/AN5 1 1 0 : P66/AN6 1 1 1 : P67/AN7 AD conversion completion bit 0 : Conversion in progress 1 : Conversion completed VREF input switch bit 0 : OFF 1 : ON AD external trigger valid bit 0 : A-D external trigger invalid 1 : A-D external trigger valid Interrupt source selection bit 0 : Interrupt request at A-D conversion completed 1 : Interrupt request at ADT input falling Not used (returns “0” when read) Comparison Voltage Generator The comparison voltage generator divides the voltage between AVSS and VREF by 256, and outputs the divided voltages. Channel Selector The channel selector selects one of the input ports P67/AN7–P60/ AN0. Fig. 36 Structure of A-D control register Data bus b7 A-D control register P57/ADT/DA2 3 b0 P60/SIN2/AN0 P61/SOUT2/AN1 A-D control circuit ADT/A-D interrupt request Channel selector P62/SCLK21/AN2 P63/SCLK22/AN3 P64/AN4 P65/AN5 P66/AN6 P67/AN7 Comparator A-D conversion register 8 Resistor ladder AVSS VREF Fig. 37 A-D converter block diagram 37 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER D-A Converter The 3826 group has an on-chip D-A converter with 8-bit resolution and 2 channels (DAi (i=1, 2)). After the DTMF/DA1 selection bit or CTCSS/DA 2 selection bit is set to “0”, the D-A converter is performed by setting the value in the D-A conversion register. The result of D-A converter is output from DAi pin by setting the DTMF/ DA 1 o utput enable bit or CTCSS/DA 2 o utput enable bit to “1”. When using the D-A converter, the corresponding port direction register bit (P56/DA1, P57/DA2) should be set to “0” (input status) and the pull-up resistor should be in the OFF state. The output analog voltage V is determined by the value n (base 10) in the D-A conversion register as follows: V=VREF ✕ n/256 (n=0 to 255) Where VREF is the reference voltage. At reset, the D-A conversion registers are cleared to “0016”, the DTMF/DA1 output enable bit or CTCSS/DA2 output enable bit are cleared to “0”, and DAi pin goes to high impedance state. The DA output is not buffered, so connect an external buffer when driving a low-impedance load. s Note on applied voltage to VREF pin When the P56/DA1 pin and P57/DA2 pin are used as I/O ports, be sure to apply Vcc level to VREF pin. When these pins are used as D-A conversion output pins, the Vcc level is recommended for the applied voltage to VREF pin. When the voltage below Vcc level is applied, the D-A conversion accuracy may be worse. b7 b0 D-A control register (DACON : address 003616) DTMF/DA1 output enable bit 0 : Disabled 1 : Enabled CTCSS/DA2 output enable bit 0 : Disabled 1 : Enabled DTMF/DA1 selection bit 0 : DA1 function 1 : DTMF function CTCSS/DA2 selection bit 0 : DA2 function 1 : CTCSS function Low group ROM data selection bit 0 : Sine wave 1 : “0” fixed High group ROM data selection bit 0 : Sine wave 1 : “0” fixed High/Low group timer write control bit 0 : Write value in latch only 1 : Write value in latch and counter CTCSS timer write control bit 0 : Write value in latch only 1 : Write value in latch and counter Fig. 38 Structure of D-A control register Data bus DA1 output enable bit Data bus R-2R resistor ladder P56/DA1 D-A1 conversion register (8) Low group ROM 5-bit ✕ 32 High group ROM 5-bit ✕ 32 Selector 5-bit adder 8-bit timer * Selector XIN/2 8-bit timer Selector 10-bit timer Selector CTCSS ROM 8-bit ✕ 64 Selector D-A2 conversion register (8) * When DTMF is selected, the high-order 6 bits are automatically set as the DTMF output. The low-order 2 bits is set by writing data to the D-A1 conversion register. P57/DA2 R-2R resistor ladder DA2 output enable bit Fig. 39 Block diagram of D-A converter 38 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER DTMF Function (Dual Tone Multi Frequency) DTMF function is used to output the result which generated automatically the waveform of sine wave of two kinds of different frequency, and added two kinds of this sine wave as an analog value. DTMF output can be performed using DA1 function. DTMF waveform is output by setting “1” to the DTMF/DA1 output enable bit (bit 0 of address 0036 16), and setting “1” to the DTMF/DA1 selection bit (bit 2 of address 003616). At this time, set “0” (input state) to the direction register of ports P56/DA1 and pull-up resistor to be OFF state. In order to set two kinds of frequency which generates DTMF waveform, value is written in the DTMF high group timer and the DTMF low group timer, respectively. By the value n written in the above-mentioned timer, respectively, the sine wave of the following frequency can be generated. f (XIN)/2 (n+1) ✕ 32 The digital value for one period of high group and low group output is shown in Figure 40. DTMF output is automatically input to high-order 6 bits of the D-A1 conversion register as 6-bit D-A data. The low-order 2 bits of the D-A1 conversion register are fixed to the value written in the D-A1 conversion register. Moreover, only the sine wave of high group can be output by setting “1” to the bit 4 of the D-A control register. By setting “1” to the bit 5 of the D-A control register similarly, only the sine wave of low group can be output. Writing to the DTMF high group timer and the DTMF low group timer can also be changed to “writing to latch and timer simultaneously” by setting “1” to the bit 6 of the D-A control register. “Writing to only latch” is set after reset release. If the D-A1 conversion register is read when the DTMF function is selected, the digital value of DTMF output can be read. f= (Hz) Set “0616” or more to the DTMF high group timer and the DTMF low group timer. After reset release, “0616” is automatically set to them. D-A1 value (8 bits)* D-A data of low group waveform (1 period) for DTMF 7816 D-A1 value (8 bits)* D-A data of high group waveform (1 period) for DTMF 7816 6416 6416 5016 5016 3C16 3C16 2816 2816 1416 1416 016 0 5 10 25 15 20 Conversion time of low group ROM 30 016 0 5 10 25 15 20 Conversion time of high group ROM 30 * This is the value set to D-A1 conversion register when the low-order 2 bits are “0”. Fig. 40 Waveform data of high group and low group 39 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER Low Groupt Frequency, High Group Frequency Low group frequency and high group frequency are as follows. Table 10 shows the example of frequency accuracy (at f(XIN)=4 MHz). (1) Low group frequency • 697 Hz • 770 Hz • 852 Hz • 941 Hz (2) High group frequency • 1209 Hz • 1336 Hz • 1477 Hz • 1633 Hz 123A 456B 789C *0#D 1209Hz 1336Hz 1477Hz 1633Hz 697Hz 770Hz 852Hz 941Hz Low group frequency High group frequency Fig. 41 Key matrix of telephone and rating frequency Table 10 Example of frequency accuracy (at f(XIN) = 4 MHz) Rating frequency (Hz) 697 770 852 941 1209 1336 1477 1633 n (Timer value) 89 80 72 65 51 46 41 37 Output frequency (Hz)] 694.4 771.6 856.2 946.9 1201.9 1329.7 1488.1 1644.7 Error frequency (Hz) –2.6 1.6 4.2 5.9 –7.1 –6.3 11.1 11.7 Deviation (%) –0.367 0.208 0.488 0.630 –0.580 –0.460 0.750 0.720 40 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER CTCSS Function (Continuous Tone-Controlled Squelch System) The CTCSS function is used to generate the sine wave of single frequency automatically. The CTCSS output waveform can be output using DA2 function. CTCSS waveform is outputted by setting “1” to the CTCSS/DA2 output enable bit (bit 1 of address 003616), and setting “1” to the CTCSS/DA2 selection bit (bit 3 of address 003616). In order to set the frequency of CTCSS output, value is written in the CTCSS timer. The CTCSS timer consists of a 10-bit timer. When writing a value to the CTCSS timer, write the low-order byte first. When reading a value from the CTCSS timer, read the high-order byte first. By the value n written in the CTCSS timer, the sine wave of the following frequency is generated. f= f (XIN)/2 (n+1) ✕ 64 (Hz) Set “00616” or more to the CTCSS timer. “0016” is automatically set to the high-order of the CTCSS timer and “0616” is automatically set to the low-order of the CTCSS timer after reset release. The amplitude of CTCSS output is obtained by the following formula. C = VCC 2 If the D-A2 conversion register is read when the CTCSS function is selected, the digital value of CTCSS output can be read. Table 11 Example of frequency accuracy (at f(XIN) = 4 MHz) Rating frequency (Hz) 67.0 77.0 88.5 100.0 107.2 114.8 123.0 131.8 141.3 151.4 162.2 173.8 186.2 203.5 218.1 233.6 250.3 n (Timer value) 465 405 352 312 291 271 253 236 220 205 192 179 167 153 142 133 124 Output frequency (Hz)] 67.06 76.97 88.53 99.84 107.02 114.89 123.03 131.86 141.40 151.70 161.92 173.61 186.01 202.92 218.53 233.20 250.00 Error frequency (Hz) 0.06 –0.03 0.027 –0.16 –0.18 0.09 0.03 0.06 0.10 0.30 –0.28 –0.19 –0.19 –0.58 0.43 –0.39 –0.30 Deviation (%) 0.089 –0.038 0.030 –0.160 –0.167 0.078 0.026 0.043 0.073 0.198 –0.174 –0.109 –0.101 –0.284 0.198 –0.167 –0.120 41 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER LCD DRIVE CONTROL CIRCUIT The 3826 group has the built-in Liquid Crystal Display (LCD) drive control circuit consisting of the following. LCD display RAM Segment output enable register LCD mode register Voltage multiplier Selector Timing controller Common driver Segment driver Bias control circuit A maximum of 40 segment output pins and 4 common output pins can be used. Up to 160 pixels can be controlled for LCD display. When the LCD • • • • • • • • • enable bit is set to “1” after data is set in the LCD mode register, the segment output enable register and the LCD display RAM, the LCD drive control circuit starts reading the display data automatically, performs the bias control and the duty ratio control, and displays the data on the LCD panel. Table 12. Maximum number of display pixels at each duty ratio Duty ratio 2 3 4 Maximum number of display pixel 80 dots or 8 segment LCD 10 digits 120 dots or 8 segment LCD 15 digits 160 dots or 8 segment LCD 20 digits b7 b0 Segment output enable register (SEG : address 003816) Segment output enable bit 0 0 : Output ports P30–P35 1 : Segment output SEG18–SEG23 Segment output enable bit 1 0 : Output ports P36, P37 1 : Segment output SEG24,SEG25 Segment output enable bit 2 0 : I/O ports P00–P05 1 : Segment output SEG26–SEG31 Segment output enable bit 3 0 : I/O ports P06,P07 1 : Segment output SEG32,SEG33 Segment output enable bit 4 0 : I/O port P10 1 : Segment output SEG34 Segment output enable bit 5 0 : I/O ports P11–P15 1 : Segment output SEG35–SEG39 LCD output enable bit 0 : Disabled 1 : Enabled Not used (return “0” when read) (Do not write “1” to this bit) b7 b0 LCD mode register (LM : address 003916) Duty ratio selection bits 0 0 : Not used 0 1 : 2 duty (use COM0, COM1) 1 0 : 3 duty (use COM0–COM2) 1 1 : 4 duty (use COM0–COM3) Bias control bit 0 : 1/3 bias 1 : 1/2 bias LCD enable bit 0 : LCD OFF 1 : LCD ON Voltage multiplier control bit 0 : Voltage multiplier disable 1 : Voltage multiplier enable LCD circuit divider division ratio selection bits 0 0 : Clock input 0 1 : 2 division of Clock input 1 0 : 4 division of Clock input 1 1 : 8 division of Clock input LCDCK count source selection bit (Note) 0 : f(XCIN)/32 1 : f(XIN)/8192 (f(XCIN)/8192 in low-speed mode) Note : LCDCK is a clock for a LCD timing controller. Fig. 42 Structure of segment output enable register and LCD mode register 42 Data bus LCD enable bit Address 005316 LCD display RAM LCD circuit divider division ratio selection bits 2 Voltage multiplier control bit Bias control bit LCD divider 2 Duty ratio selection bits LCDCK count source selection bit “0” f(XCIN)/ 32 “1” f(XIN)/8192 (f(XCIN)/8192 in lowspeed mode) Fig. 43 Block diagram of LCD controller/driver Selector Selector Timing controller LCDCK Level shift Bias control VCC Level shift Level Shift Level Shift Level Shift Level Shift LCD output Common Common Common Common enable bit driver driver driver driver Address 004016 Address 004116 Selector Selector Selector Selector Level shift Level shift Level shift Level shift Segment Segment Segment Segment driver driver driver driver Segment Segment driver driver SEG0 SEG1 SEG2 SEG3 P14/SEG38 P15/SEG39 P30/SEG18 VSS VL1 VL2 VL3 C1 C2 COM0 COM1 COM2 COM3 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER 43 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER Voltage Multiplier (3 Times) The voltage multiplier performs threefold boosting. This circuit inputs a reference voltage for boosting from LCD power input pin VL1. (However, when using a 1/2 bias, connect VL1 and VL2 and apply voltage by external resistor division.) Set each bit of the segment output enable register and the LCD mode register in the following order for operating the voltage multiplier. 1. Set the segment output enable bits (bits 0 to 5) of the segment output enable register to “0” or “1.” 2. Set the duty ratio selection bits (bits 0 and 1), the bias control bit (bit 2), the LCD circuit divider division ratio selection bits (bits 5 and 6), and the LCDCK count source selection bit (bit 7) of the LCD mode register to “0” or “1.” 3. Set the LCD output enable bit (bit 6) of the segment output enable register to “1.” 4. Set the voltage multiplier control bit (bit 4) of the LCD mode register to “1.” When voltage is input to the VL1 pin during operating the voltage multiplier, voltage that is twice as large as VL1 occurs at the VL2 pin, and voltage that is three times as large as VL1 occurs at the VL3 pin. When using the voltage multiplier, apply 1.3 V ≤ Voltage ≤ 2.3 V (1.3 V ≤ Voltage ≤ 2.1 V for low voltage version) to the VL1 pin. When not using the voltage multiplier,apply proper voltage to the LCD power input pins (VL1–VL3). Then set the LCD output enable bit to “1.” When the LCD output enable bit is set to “0,” the V CC voltage is applied to the VL3 pin inside of this microcomputer. The voltage multiplier control bit (bit 4 of the LCD mode register) controls the voltage multiplier. Bias Control and Applied Voltage to LCD Power Input Pins To the LCD power input pins (VL1–V L3), apply the voltage shown in Table 13 according to the bias value. Select a bias value by the bias control bit (bit 2 of the LCD mode register). Table 13. Bias control and applied voltage to VL1–VL3 Bias value 1/3 bias Voltage value VL3=VLCD VL2=2/3 VLCD VL1=1/3 VLCD VL3=VLCD VL2=VL1=1/2 VLCD 1/2 bias Note : V LCD i s the maximum value of supplied voltage for the LCD panel. Contrast control Contrast control VL3 VL2 C2 C1 VL1 VL3 R1 VL2 C2 C1 VL1 R3 Open R2 Open VL3 R4 VL2 C2 C1 VL1 R5 PXx Open Open 1/3 bias when using the voltage multiplier R1=R2=R3 1/3 bias when not using the voltage multiplier R4=R5 1/2 bias Fig. 44 Example of circuit at each bias 44 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER Common Pin and Duty Ratio Control The common pins (COM 0–COM3) to be used are determined by duty ratio. Select duty ratio by the duty ratio selection bits (bits 0 and 1 of the LCD mode register). When releasing from reset, the VCC (VL3) voltage is output from the common pins. Table 14. Duty ratio control and common pins used Duty ratio 2 3 4 Duty ratio selection bits Bit 1 0 1 1 Bit 0 1 0 1 Common pins used COM0, COM1 (Note 1) COM0–COM2 (Note 2) COM0–COM3 LCD Display RAM Address 004016 to 005316 is the designated RAM for the LCD display. When “1” are written to these addresses, the corresponding segments of the LCD display panel are turned on. LCD Drive Timing The LCDCK timing frequency (LCD drive timing) is generated internally and the frame frequency can be determined with the following equation; f(LCDCK)= (frequency of count source for LCDCK) (divider division ratio for LCD) f(LCDCK) duty ratio Notes 1: COM2 and COM3 are open. 2: COM3 is open. Frame frequency= Segment Signal Output Pin Segment signal output pins are classified into the segment-only pins (SEG 0 – SEG 17 ), the segment/output port pins (SEG 18 – SEG25), and the segment/I/O port pins (SEG26–SEG39). Segment signals are output according to the bit data of the LCD RAM corresponding to the duty ratio. After reset release, a V CC (=VL3) voltage is output to the segment-only pins and the segment/output port pins are the high impedance condition and pulled up to VCC (=VL3) voltage. Also, the segment/I/O port pins(SEG26–SEG39) are set to input ports, and VCC (=VL3) is applied to them by pull-up resistor. Bit 7 Address 004016 004116 004216 004316 004416 004516 004616 004716 004816 004916 004A16 004B16 004C16 004D16 004E16 004F16 005016 005116 005216 005316 COM3 COM2 COM1 COM0 COM3 COM2 COM1 COM0 SEG1 SEG0 SEG3 SEG2 SEG5 SEG4 SEG7 SEG6 SEG9 SEG8 SEG11 SEG10 SEG13 SEG12 SEG15 SEG14 SEG17 SEG16 SEG19 SEG18 SEG21 SEG20 SEG23 SEG22 SEG25 SEG24 SEG27 SEG26 SEG29 SEG28 SEG31 SEG30 SEG33 SEG32 SEG35 SEG34 SEG37 SEG36 SEG39 SEG38 6 5 4 3 2 1 0 Fig. 45 LCD display RAM map 45 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER Internal logic LCDCK timing 1/4 duty Voltage level VL3 VL2=VL1 VSS COM0 COM1 COM2 COM3 SEG0 VL3 VSS OFF COM3 COM2 COM1 ON COM0 COM3 OFF COM2 COM1 ON COM0 1/3 duty COM0 COM1 COM2 VL3 VSS VL3 VL2=VL1 VSS SEG0 ON COM0 1/2 duty COM0 COM1 SEG0 OFF COM2 COM1 ON COM0 OFF COM2 COM1 ON COM0 OFF COM2 VL3 VL2=VL1 VSS VL3 VSS ON COM1 OFF COM0 ON COM1 OFF COM0 ON COM1 OFF COM0 ON COM1 OFF COM0 Fig. 46 LCD drive waveform (1/2 bias) 46 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER Internal logic LCDCK timing 1/4 duty Voltage level COM0 VL3 VL2 VL1 VSS COM1 COM2 COM3 SEG0 VL3 VSS OFF COM3 COM2 COM1 ON COM0 COM3 OFF COM2 COM1 ON COM0 1/3 duty COM0 COM1 COM2 VL3 VSS VL3 VL2 VL1 VSS SEG0 ON COM0 1/2 duty COM0 COM1 SEG0 OFF COM2 COM1 ON COM0 OFF COM2 COM1 ON COM0 OFF COM2 VL3 VL2 VL1 VSS VL3 VSS ON COM1 OFF COM0 ON COM1 OFF COM0 ON COM1 OFF COM0 ON COM1 OFF COM0 Fig. 47 LCD drive waveform (1/3 bias) 47 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER Watchdog Timer The watchdog timer gives a mean of returning to the reset status when a program cannot run on a normal loop (for example, because of a software runaway). The watchdog timer consists of an 8-bit watchdog timer L and a 6bit watchdog timer H. At reset or writing to the watchdog timer control register (address 0037 16), the watchdog timer is set to “3FFF16.” When any data is not written to the watchdog timer control register (address 003716) after reset, the watchdog timer is in stop state. The watchdog timer starts to count down from “3FFF16” by writing an optional value into the watchdog timer control register (address 003716) and an internal reset occurs at an underflow. Accordingly, programming is usually performed so that writing to the watchdog timer control register (address 0037 16) may be started before an underflow. The watchdog timer does not function when an optional value has not been written to the watchdog timer control register (address 003716). When address 003716 is read, the following values are read: q value of high-order 6-bit counter q value of STP instruction disable bit q value of count source selection bit. When bit 6 of the watchdog timer control register (address 003716) is set to “0,” the STP instruction is valid. The STP instruction is disabled by rewriting this bit to “1.” At this time, if the STP instruction is executed, it is processed as an undefined instruction, so that a reset occurs inside. This bit cannot be rewritten to “0” by programming. This bit is “0” immediately after reset. The count source of the watchdog timer becomes the system clock φ divided by 8. The detection time in this case is set to 8.19 s at f(XCIN) = 32 kHz and 32.768 ms at f(XIN) = 8 MHz. However, count source of high-order 6-bit timer can be connected to a signal divided system clock by 8 directly by writing the bit 7 of the watchdog timer control register (address 003716) to “1.” The detection time in this case is set to 32 ms at f(XCIN) = 32 kHz and 128 µs at f(XIN) = 8 MHz. There is no difference in the detection time between the middle-speed mode and the high-speed mode. XCIN “1” Internal system clock selection bit (Note) “0” XIN “FF16” is set when watchdog timer is written to. Watchdog timer L (8) Data bus Watchdog timer H count source selection bit “0” “1” Watchdog timer H (6) 1/16 Undefined instruction Reset STP instruction disable bit STP instruction RESET “3F16” is set when watchdog timer is written to. Internal reset Reset circuit Reset release time wait Note: This is the bit 7 of CPU mode register and is used to switch the middle-/high-speed mode and low-speed mode. Fig. 48 Block diagram of watchdog timer b7 b0 Watchdog timer register (address 003716) WDTCON Watchdog timer H (for read-out of high-order 6 bit) “3FFF16” is set to the watchdog timer by writing values to this address. STP instruction disable bit 0 : STP instruction enabled 1 : STP instruction disabled Watchdog timer H count source selecion bit 0 : Watchdog timer L underflow 1 : f(XIN)/16 or f(XCIN)/16 Fig. 49 Structure of watchdog timer control register f(XIN) Internal reset signal Watchdog timer detection Fig. 50 Timing of reset output ≅ 1 ms (f(XIN) = 8 MHZ) 48 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER TOUT/φ CLOCK OUTPUT FUNCTION The internal system clock φ or timer 2 divided by 2 (TOUT output) can be output from port P43 by setting the TOUT/φ output control bit (bit 1) of the timer 123 mode register and the T OUT/φ output control register. Set bit 3 of the port P4 direction register to “1” when outputting the clock. b7 b0 TOUT / φ output control register (CKOUT : address 002A 16) TOUT /φ output control bit 0 : φ clock output 1 : TOUT output Not used (return “0” when read) b7 b0 Timer 123 mode register (T123M : address 0029 16) TOUT output active edge switch bit 0 : Start at “H” output 1 : Start at “L” output TOUT /φ output control bit 0 : TOUT / φ output disabled 1 : TOUT / φ output enabled Timer 2 write control bit 0 : Write data in latch and timer 1 : Write data in latch only Timer 2 count source selection bit 0 : Timer 1 output 1 : f(XIN )/16 (or f(XCIN )/16 in low-speed mode ✽) Timer 3 count source selection bit 0 : Timer 1 output 1 : f(XIN )/16 (or f(XCIN )/16 in low-speed mode ✽) Timer 1 count source selection bit 0 : f(XIN )/16 (or f(XCIN )/16 in low-speed mode ✽) 1 : f(XCIN ) Not used (return “0” when read) ✽ : Internal clock φ is f(XCIN)/2 in the low-speed mode. Fig. 51 Structure of TOUT/φ output-related register 49 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER RESET CIRCUIT To reset the microcomputer, RESET pin should be held at an “L” level for 2 µs or more. Then the RESET pin is returned to an “H” level (the power source voltage should be between VCC(min.) and 5.5 V, and the quartz-crystal oscillator should be stable), reset is released. After the reset is completed, the program starts from the address contained in address FFFD16 (high-order byte) and address FFFC 16 ( low-order byte). Make sure that the reset input voltage is less than 0.2 VCC for VCC of VCC (min.). Power on Power source voltage 0V Reset input voltage 0V Note: Reset release voltage VCC = VCC (min.) (Note) RESET VCC 0.2 VCC RESET VCC Power source voltage detection circuit Fig. 52 Example of reset circuit XIN φ RESET Internal reset Reset address from vector table Address Data ? ? ? ? FFFC ADL FFFD ADH, ADL A DH SYNC Notes 1 : XIN and φ are in the relationship : f(XIN) = 8•f(φ) 2 : A question mark (?) indicates an undefined status that depends on the previous status. XIN : about 8200 clock cycles Fig. 53 Reset Sequence 50 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER Address (1) Port P0 direction register (2) Port P1 direction register (3) Port P2 direction register (4) Port P3 output control register (5) Port P4 direction register (6) Port P5 direction register (7) Port P6 direction register (8) Port P7 direction register (9) Key input control register (10) PULL register A (11) PULL register B (12) Serial I/O1 status register (13) Serial I/O1 control register (14) UART control register (15) Serial I/O2 control register (16) Timer X (low) (17) Timer X (high) (18) Timer Y (low) (19) Timer Y (high) (20) Timer 1 (21) Timer 2 (22) Timer 3 (23) Timer X mode register (24) Timer Y mode register (25) Timer 123 mode register (26) TOUT/φ output control register (27) PWM control register (28) CTCSS timer (low) (29) CTCSS timer (high) (30) DTMF high group timer (31) DTMF low group timer (32) D-A1 conversion register (33) D-A2 conversion register (34) A-D control register (35) D-A control register (36) Watchdog timer control register (37) Segment output enable register (38) LCD mode register 000116 000316 000516 000716 000916 000B16 000D16 000F16 001516 001616 001716 Register contents 0016 0016 0016 0016 0016 0016 0016 0016 0016 3F16 0016 001916 1 0 0 0 0 0 0 0 001A16 0016 001B16 1 1 1 0 0 0 0 0 001D16 002016 002116 002216 002316 002416 002516 002616 002716 002816 002916 002A16 002B16 002E16 002F16 003016 003116 003216 003316 0016 FF16 FF16 FF16 FF16 FF16 0116 FF16 0016 0016 0016 0016 0016 0616 0016 0616 0616 0016 0016 003416 0 0 0 0 1 0 0 0 003616 0016 003716 0 0 1 1 1 1 1 1 003816 003916 0016 0016 0016 (39) Interrupt edge selection register 003A16 (40) CPU mode register (41) Interrupt request register 1 (42) Interrupt request register 2 (43) Interrupt control register 1 (44) Interrupt control register 2 (45) Processor status register (46) Program counter 003B16 0 1 0 0 1 0 0 0 003C16 003D16 003E16 003F16 0016 0016 0016 0016 (PS) ✕ ✕ ✕ ✕ ✕ 1 ✕ ✕ (PCH) (PCL) Contents of address FFFD16 Contents of address FFFC16 (47) Watchdog timer (high-order) (48) Watchdog timer (low-order) 3F16 FF16 Note: The contents of all other registers and RAM are undefined after reset, so they must be initialized by software. ✕ : Undefined Fig. 54 Internal state of microcomputer immediately after reset 51 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER CLOCK GENERATING CIRCUIT The 3826 group has two built-in oscillation circuits. An oscillation circuit can be formed by connecting a resonator between XIN and XOUT (XCIN and XCOUT). Use the circuit constants in accordance with the resonator manufacturer's recommended values. No external resistor is needed between X IN and XOUT since a feed-back resistor exists on-chip. However, an external feed-back resistor is needed between XCIN and XCOUT. To supply a clock signal externally, input it to the XIN pin and make the X OUT pin open. The sub-clock X CIN-XCOUT oscillation circuit cannot directly input clocks that are externally generated. Accordingly, be sure to cause an external resonator to oscillate. Immediately after poweron, only the X IN oscillation circuit starts oscillating, and XCIN and XCOUT pins go to high-impedance state. Oscillation Control (1) Stop mode If the STP instruction is executed, the internal clock φ stops at an “H” level, and XIN and XCIN oscillators stop. In this time, values set previously to timer 1 latch and timer 2 latch are loaded automatically to timer 1 and timer 2. Set the values to generate the wait time required for oscillation stabilization to timer 1 latch and timer 2 latch (low-order 8 bits of timer 1 and high-order 8 bits of timer 2) before the STP instruction. Either X IN o r X CIN d ivided by 16 is input to timer 1 as count source, and the output of timer 1 is connected to timer 2. The bits of the timer 123 mode register except bit 4 are cleared to “0”. Set the timer 1 and timer 2 interrupt enable bits to disabled (“0”) before executing the STP instruction. Oscillator restarts at reset or when an external interrupt is received, but the internal clock φ i s not supplied to the CPU until timer 2 underflows. This allows time for the clock circuit oscillation to stabilize when a ceramic resonator is used. Frequency Control (1) Middle-speed mode The internal clock φ is the frequency of XIN divided by 8. After reset, this mode is selected. (2) Wait mode (2)High-speed mode The internal clock φ is half the frequency of XIN. If the WIT instruction is executed, the internal clock φ stops at an “H” level. The states of XIN and XCIN are the same as the state before the executing the WIT instruction. The internal clock restarts at reset or when an interrupt is received. Since the oscillator does not stop, normal operation can be started immediately after the clock is restarted. (3) Low-speed mode • The internal clock φ is half the frequency of XCIN. • A low-power consumption operation can be realized by stopping the main clock XIN in this mode. To stop the main clock, set bit 5 of the CPU mode register to “1”. When the main clock XIN is restarted, set enough time for oscillation to stabilize by programming. Note: If you switch the mode between middle/high-speed and lowspeed, stabilize both X IN a nd X CIN o scillations. The sufficient time is required for the sub-clock to stabilize, especially immediately after power-on and at returning from stop mode. When switching the mode between middle/highspeed and low-speed, set the frequency in the condition that f(XIN) > 3•f(XCIN). XCIN XCOUT Rf CCIN Rd CCOUT XI N XOUT CI N COUT Fig. 55 Ceramic resonator circuit XCIN Rf CCIN XCOUT Rd CCOUT XIN XOUT Open External oscillation circuit VCC VSS Fig. 56 External clock input circuit 52 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER XCIN XCOUT XIN XOUT Internal system clock selection bit (Note) Timer 1 count source selection bit “1” Timer 1 “0” Timer 2 count source selection bit “0” Timer 2 “1” Low-speed mode “0” 1/2 “1” Middle-/High-speed mode 1/4 1/2 Main clock division ratio selection bit Middle-speed mode “1” “0” High-speed mode or Low-speed mode Main clock stop bit Timing φ (Internal clock) Q S R WIT instruction S R Q Q S STP instruction R STP instruction Reset Interrupt disable flag I Interrupt request Note: When using the low-speed mode, set the XC switch bit to “1”. Fig. 57 Clock generating circuit block diagram 53 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER Reset Middle-speed mode (φ = 1 MHz) CM7 = 0 (8 MHz selected) CM6 = 1 (Middle-speed) CM5 = 0 (XIN oscillating) CM6 “1” “0” High-speed mode (φ = 4 MHz) CM7 = 0 (8 MHz selected) CM6 = 0 (High-speed) CM5 = 0 (XIN oscillating) “0” CM7 “1” CM7 Low-speed mode (φ =16 kHz) CM7 = 1 (32 kHz selected) CM6 = 1 (Middle-speed) CM5 = 0 (XIN oscillating) CM6 “1” “0” Low-speed mode (φ =16 kHz) CM7 = 1 (32 kHz selected) CM6 = 0 (High-speed) CM5 = 0 (XIN oscillating) “1” “0” b7 b4 CPU mode register (CPUM : address 003B16) “0” ” “0 CM” “1 M6 C ” “1 5 “0 ” “1” Low-speed mode (φ = 16 kHz) CM7 = 1 (32 kHz selected) CM6 = 1 (Middle-speed) CM5 = 1 (XIN stopped) CM6 “1” “0” Low-speed mode (φ =16 kHz) CM7 = 1 (32 kHz selected) CM6 = 0 (High-speed) CM5 = 1 (XIN stopped) Notes 1: Switch the mode by the arrows shown between the mode blocks. (Do not switch between the mode directly without an arrow.) 2: The all modes can be switched to the stop mode or the wait mode and returned to the source mode when the stop mode or the wait mode is ended. 3: Timer and LCD operate in the wait mode. 4: When the stop mode is ended, a delay time can be set by timer 1 and timer 2 in middle-/high-speed mode. 5: When the stop mode is ended, a delay time in low-speed mode can be set as well. 6: Wait until oscillation stabilizes after oscillating the main clock XIN before the switching from the low-speed mode to middle-/highspeed mode. 7: The example assumes that 8 MHz is being applied to the XIN pin and 32 kHz to the XCIN pin. φ indicates the internal clock. Fig. 58 State transitions of system clock 54 CM5 “1” ” “0 CM5 C “0 M5 CM” “1 6 ” “1 ” CM4 : Xc switch bit 0: Oscillation stop 1: XCIN, XCOUT CM5 : Main clock (XIN–XOUT) stop bit 0: Oscillating 1: Stopped CM6 : Main clock division ratio selection bit 0: f(XIN)/2 (high-speed mode) 1: f(XIN)/8 (middle-speed mode) CM7 : Internal system clock selection bit 0: XIN–XOUT selected (middle-/high-speed mode) 1: XCIN–XCOUT selected (low-speed mode) “0” MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER NOTES ON PROGRAMMING Processor Status Register The contents of the processor status register (PS) after a reset are undefined, except for the interrupt disable flag (I) which is “1”. After a reset, initialize flags which affect program execution. In particular, it is essential to initialize the index X mode (T) and the decimal mode (D) flags because of their effect on calculations. Serial I/O In clock synchronous serial I/O, if the receive side is using an external clock and it is to output the SRDY signal, set the transmit enable bit, the receive enable bit, and the SRDY output enable bit to “1”. Serial I/O1 continues to output the final bit from the TXD pin after transmission is completed. In serial I/O2, the SOUT2 pin goes to high impedance state after transmission is completed. Interrupt The contents of the interrupt request bits do not change immediately after they have been written. After writing to an interrupt request register, execute at least one instruction before performing a BBC or BBS instruction. A-D Converter The comparator uses internal capacitors whose charge will be lost if the clock frequency is too low. Make sure that f(XIN) is at least 500kHz during an A-D conversion. Do not execute the STP or WIT instruction during an A-D conversion. Decimal Calculations To calculate in decimal notation, set the decimal mode flag (D) to “1”, then execute an ADC or SBC instruction. Only the ADC and SBC instructions yield proper decimal results. After executing an ADC or SBC instruction, execute at least one instruction before executing a SEC, CLC, or CLD instruction. In decimal mode, the values of the negative (N), overflow (V), and zero (Z) flags are invalid. Instruction Execution Time The instruction execution time is obtained by multiplying the frequency of the internal clock φ by the number of cycles needed to execute an instruction. The number of cycles required to execute an instruction is shown in the list of machine instructions. The frequency of the internal clock φ is half of the XIN frequency. Timers If a value n (between 0 and 255) is written to a timer latch, the frequency division ratio is 1/(n + 1). Multiplication and Division Instructions The index mode (T) and the decimal mode (D) flags do not affect the MUL and DIV instruction. The execution of these instructions does not change the contents of the processor status register. Ports The contents of the port direction registers cannot be read. The following cannot be used: • The data transfer instruction (LDA, etc.) • The operation instruction when the index X mode flag (T) is “1” • The addressing mode which uses the value of a direction register as an index • The bit-test instruction (BBC or BBS, etc.) to a direction register • The read-modify-write instruction (ROR, CLB, or SEB, etc.) to a direction register Use instructions such as LDM and STA, etc., to set the port direction registers. 55 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER DATA REQUIRED FOR MASK ORDERS The following are necessary when ordering a mask ROM production: 1.Mask ROM Order Confirmation Form✽ 2.Mark Specification Form✽ 3.Data to be written to ROM, in EPROM form (three identical copies) or one floppy disk. ✽For the mask ROM confirmation and the mark specifications, refer to the “Mitsubishi MCU Technical Information” Homepage (http://www.infomicom.maec.co.jp/indexe.htm). ROM PROGRAMMING METHOD The built-in PROM of the blank One Time PROM version and builtin EPROM version can be read or programmed with a generalpurpose PROM programmer using a special programming adapter. Set the address of PROM programmer in the user ROM area. Table 15. Programming adapter Package 100P6Q-A 100P6S-A 100D0 Name of Programming Adapter PCA4738G-100A PCA4738F-100A PCA4738L-100A The PROM of the blank One Time PROM version is not tested or screened in the assembly process and following processes. To ensure proper operation after programming, the procedure shown in Figure 59 is recommended to verify programming. Programming with PROM programmer Screening (Caution) (150°C for 40 hours) Verification with PROM programmer Functional check in target device Caution : The screening temperature is far higher than the storage temperature. Never expose to 150 °C exceeding 100 hours. Fig. 59 Programming and testing of One Time PROM version 56 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER ELECTRICAL CHARACTERISTICS ABSOLUTE MAXIMUM RATINGS Table 16 Absolute maximum ratings Symbol VCC VI VI VI VI VI VI VI VO VO VO VO VO VO Pd Topr Tstg Parameter Power source voltage Input voltage P00–P07, P10–P17, P20–P27, P40–P47, P50–P57, P60–P67 Input voltage P70–P77 Input voltage VL1 Input voltage VL2 Input voltage VL3 Input voltage C1, C2 Input voltage RESET, XIN Output voltage C1, C2 Output voltage P00–P07, P10–P15, P30–P37 Output voltage P16, P17, P20–P27, P40–P47, P50–P57, P60–P67, P71–P77 Output voltage VL3 Output voltage VL2, SEG0–SEG17 Output voltage XOUT Power dissipation Operating temperature Storage temperature Conditions Ratings –0.3 to 7.0 –0.3 to VCC +0.3 –0.3 to VCC +0.3 All voltages are based on VSS. Output transistors are cut off. –0.3 to VL2 VL1 to VL3 VL2 to 7.0 –0.3 to 7.0 –0.3 to VCC +0.3 –0.3 to 7.0 –0.3 to VCC –0.3 to VL3 –0.3 to VCC +0.3 –0.3 to 7.0 –0.3 to VL3 –0.3 to VCC +0.3 300 –20 to 85 –40 to 125 Unit V V V V V V V V V V V V V V V mW °C °C At output port At segment output Ta = 25°C RECOMMENDED OPERATING CONDITIONS Table 17 Recommended operating conditions (1) (VCC = 2.5 to 5.5 V, Ta = –20 to 85°C, unless otherwise noted) Symbol Parameter High-speed mode f(XIN) = 8 MHz Middle-speed mode f(XIN) = 8 MHz Low-speed mode Min. 4.0 2.5 2.5 2.0 0 AVSS VCC Limits Typ. 5.0 5.0 5.0 0 Max. 5.5 5.5 5.5 VCC Unit VCC VSS VREF AVSS VIA Power source voltage V V V V V Power source voltage A-D, D-A conversion reference voltage Analog power source voltage Analog input voltage AN0–AN7 57 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER Table 18 Recommended operating conditions (2) (VCC = 2.5 to 5.5 V, Ta = –20 to 85°C, unless otherwise noted) Symbol VIH VIH VIH VIH VIL VIL VIL VIL “H” input voltage “H” input voltage “H” input voltage “H” input voltage “L” input voltage “L” input voltage “L” input voltage “L” input voltage Parameter P00–P07, P10–P17, P40, P43, P45, P47, P50–P53, P56, P61, P64–P67, P71–P77 P20–P27, P41, P42, P44, P46, P54, P55, P57, P60, P62, P63, P70 RESET XIN P00–P07, P10–P17, P40, P43, P45, P47, P50–P53, P56, P61, P64–P67, P71–P77 P20–P27, P41, P42, P44, P46, P54, P55, P57, P60, P62, P63, P70 RESET XIN Min. 0.7 VCC 0.8 VCC 0.8 VCC 0.8 VCC 0 0 0 0 Limits Typ. Max. VCC VCC VCC VCC 0.3 VCC 0.2 VCC 0.2 VCC 0.2 VCC Unit V V V V V V V V 58 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER Table 19 Recommended operating conditions (3) (VCC = 2.5 to 5.5 V, Ta = –20 to 85°C, unless otherwise noted) Symbol ΣIOH(peak) ΣIOH(peak) ΣIOL(peak) ΣIOL(peak) ΣIOL(peak) ΣIOH(avg) ΣIOH(avg) ΣIOL(avg) ΣIOL(avg) ΣIOL(avg) IOH(peak) IOH(peak) IOL(peak) IOL(peak) IOL(peak) IOH(avg) IOH(avg) IOL(avg) IOL(avg) IOL(avg) “H” total peak output current “H” total peak output current “L” total peak output current “L” total peak output current “L” total peak output current “H” total average output current “H” total average output current “L” total average output current “L” total average output current “L” total average output current “H” peak output current “H” peak output current “L” peak output current “L” peak output current “L” peak output current “H” average output current “H” average output current “L” average output current “L” average output current “L” average output current Parameter P00–P07, P10–P17, P20–P27, P30–P37 (Note 1) P41–P47, P50–P57, P60–P67 (Note 1) P00–P07, P10–P17, P20–P27, P30–P37 (Note 1) P41–P47, P50–P57, P60–P67 (Note 1) P40, P71–P77 (Note 1) P00–P07, P10–P17, P20–P27, P30–P37 (Note 1) P41–P47, P50–P57, P60–P67 (Note 1) P00–P07, P10–P17, P20–P27, P30–P37 (Note 1) P41–P47, P50–P57, P60–P67 (Note 1) P40, P71–P77 (Note 1) P00–P07, P10–P15, P30–P37 (Note 2) P16, P17, P20–P27, P41–P47, P50–P57, P60–P67 (Note 2) P00–P07, P10–P15, P30–P37 (Note 2) P16, P17, P20–P27, P41–P47, P50–P57, P60–P67 (Note 2) P40, P71–P77 (Note 2) P00–P07, P10–P15, P30–P37 (Note 3) P16, P17, P20–P27, P41–P47, P50–P57, P60–P67 P00–P07, P10–P15, P30–P37 (Note 3) P16, P17, P20–P27, P41–P47, P50–P57, P60–P67 (Note 3) P40, P71–P77 (Note 3) Min. Limits Typ. Max. –20 –20 20 20 80 –10 –10 10 10 40 –1.0 –5.0 5.0 10 20 –0.5 –2.5 2.5 5.0 10 Unit mA mA mA mA mA mA mA mA mA mA mA mA mA mA mA mA mA mA mA mA Notes1: The total output current is the sum of all the currents flowing through all the applicable ports. The total average current is an average value measured over 100 ms. The total peak current is the peak value of all the currents. 2: The peak output current is the peak current flowing in each port. 3: The average output current is an average value measured over 100 ms. 59 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER Table 20 Recommended operating conditions (4) (VCC = 2.5 to 5.5 V, Ta = –20 to 85°C, unless otherwise noted) Symbol f(CNTR0) f(CNTR1) Parameter Input frequency for timers X and Y (duty cycle 50%) Test conditions (4.0 V ≤ VCC ≤ 5.5 V) (VCC ≤ 4.0 V) High-speed mode (4.0 V ≤ VCC ≤ 5.5 V) f(XIN) Main clock input oscillation frequency (Note 1) High-speed mode (2.5 V ≤ VCC ≤ 4.0 V) Middle-speed mode 32.768 Min. Limits Typ. Max. 4.0 (2✕VCC) –4 8.0 Unit MHz MHz MHz f(XCIN) Sub-clock input oscillation frequency (Notes 1, 2) (4✕VCC) MHz –8 8.0 MHz 50 kHz Notes1: When the oscillation frequency has a duty cycle of 50%. 2: When using the microcomputer in low-speed mode, make sure that the sub-clock input oscillation frequency on condition that f(XCIN) < f(XIN)/3. 60 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER Table 21 Electrical characteristics (1) (VCC =4.0 to 5.5 V, Ta = –20 to 85°C, unless otherwise noted) Symbol Parameter “H” output voltage P00–P07, P10–P15, P30–P37 “H” output voltage P16, P17, P20–P27, P41–P47, P50–P57, P60–P67 (Note 1) Test conditions IOH = –1 mA IOH = –0.25 mA VCC = 2.5 V IOH = –5 mA IOH = –1.5 mA IOH = –1.25 mA VCC = 2.5 V IOL = 5 mA IOL = 1.5 mA IOL = 1.25 mA VCC = 2.5 V IOL = 10 mA IOL = 3.0 mA IOL = 2.5 mA VCC = 2.5 V IOL = 10 mA IOL = 5 mA VCC = 2.5 V Limits Min. VCC–2.0 VCC–0.8 VCC–2.0 VCC–0.5 VCC–0.8 2.0 0.5 0.8 2.0 0.5 0.8 0.5 0.3 0.5 0.5 0.5 5.0 5.0 4.0 –5.0 –60.0 –6.0 –120.0 –25.0 –240.0 –45.0 –5.0 –5.0 –4.0 –60.0 –6.0 –120.0 –25.0 –240.0 –45.0 5.0 –5.0 Typ. Max. Unit V V V V V V V V V V V V V V V V µA µA µA µA µA µA µA µA µA µA µA µA µA VOH VOH VOL “L” output voltage P00–P07, P10–P15, P30–P37 VOL “L” output voltage P16, P17, P20–P27, P41–P47, P50–P57, P60–P67 “L” output voltage P40, P71–P77 VOL VT+ – VT– VT+ – VT– VT+ – VT– IIH IIH IIH IIL IIL IIL IIL ILOAD Hysteresis INT0–INT2, ADT, CNTR0, CNTR1, P20–P27 Hysteresis SCLK, RXD, SIN2 Hysteresis RESET “H” input current P00–P07, P10–P17, P20–P27, P40–P47, VI = VCC P50–P57, P60–P67, P70–P77 “H” input current RESET VI = VCC “H” input current XIN VI = VCC VI = VSS Pull-ups “off” “L” input current VCC = 5 V, VI = VSS P00–P07,P10–P17, P20–P27,P41–P47, Pull-ups “on” P50–P57, P60–P67 VCC = 2.5 V, VI = VSS Pull-ups “on” “L” input current P40, P70–P77 “L” input current RESET VI = VSS “L” input current XIN VI = VSS VCC = 5.0 V, VO = VCC, Pullup ON Output transistors “off” Output load current P30–P37 VCC = 2.5 V,VO = VCC, Pullup ON Output transistors “off” Output leak current P30–P37 VO = VCC, Pullup OFF Output transistors “off” VO = VSS, Pullup OFF Output transistors “off” ILEAK 61 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER Table 22 Electrical characteristics (2) (VCC =2.5 to 5.5 V, Ta = –20 to 85°C, unless otherwise noted) Symbol VRAM Parameter RAM retention voltage Test conditions At clock stop mode • High-speed mode, VCC = 5 V f(XIN) = 8 MHz f(XCIN) = 32.768 kHz Output transistors “off” A-D converter in operating • High-speed mode, VCC = 5 V f(XIN) = 8 MHz (in WIT state) f(XCIN) = 32.768 kHz Output transistors “off” A-D converter stop • Low-speed mode, VCC = 5 V, Ta ≤ 55°C f(XIN) = stopped f(XCIN) = 32.768 kHz Output transistors “off” ICC Power source current • Low-speed mode, VCC = 5 V, Ta = 25°C f(XIN) = stopped f(XCIN) = 32.768 kHz (in WIT state) Output transistors “off” • Low-speed mode, VCC = 3 V, Ta ≤ 55°C f(XIN) = stopped f(XCIN) = 32.768 kHz Output transistors “off” • Low-speed mode, VCC = 3 V, Ta = 25°C f(XIN) = stopped f(XCIN) = 32.768 kHz (in WIT state) Output transistors “off” All oscillation stopped (in STP state) Output transistors “off” (M3826AEF) All oscillation stopped (in STP state) Output transistors “off” (M38267E8) When using voltage multiplier VL1 = 1.8 V Ta = 25 °C Ta = 85 °C Ta = 25 °C Ta = 55 °C 1.3 1.8 4.0 0.5 0.1 1.0 10 10 60 2.3 µA V µA µA 8 16 µA 18 36 µA 23 46 µA 45 67 µA 2.5 4.0 mA 8.0 15 mA Min. 2.0 Limits Typ. Max. 5.5 Unit V VL1 IL1 Power source voltage Power source current (VL1) (Note) Note: When the voltage multiplier control bit of the LCD mode register (bit 4 at address 003916) is “1”. 62 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER Table 23 A-D converter characteristics (VCC = 2.7 to 5.5 V, VSS = AVSS = 0 V, Ta = –20 to 85°C, 500 kHz ≤ f(XIN) ≤ 8 MHz, in middle/high-speed mode unless otherwise noted) Symbol – – tCONV RLADDER IVREF IIA Parameter Resolution Absolute accuracy (excluding quantization error) Conversion time Ladder resistor Reference power source input current Analog port input current Test conditions Min. Limits Typ. Max. 8 ±2 12.5 (Note) 100 200 5.0 Unit Bits LSB µs kΩ µA µA VCC = VREF = 2.7 to 5.5 V f(XIN) = 8 MHz 12 50 35 150 VREF = 5 V Note: When an internal trigger is used in middle-speed mode, it is 14 µs. Table 24 D-A converter characteristics (VCC = 2.7 to 5.5 V, VCC = VREF, VSS = AVSS = 0 V, Ta = –20 to 85°C, in middle/high-speed mode unless otherwise noted) Symbol – – tsu RO IVREF Resolution Absolute accuracy Setting time Output resistor Reference power source input current VCC = VREF = 5 V VCC = VREF = 2.7 V 1 M3826AEF M38267E8 (Note) (Note) 3 2.5 Parameter Test conditions Min. Limits Typ. Max. 8 1.0 2.0 4 3.2 6.0 Unit Bits % % µs kΩ mA mA Note: Using one D-A converter, with the value in the D-A conversion register of the other D-A converter being “0016”, and excluding currents flowing through the A-D resistance ladder. 63 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER Table 25 Timing requirements 1 (VCC = 4.0 to 5.5 V, VSS = 0 V, Ta = –20 to 85°C, unless otherwise noted) Symbol tw(RESET) tc(XIN) twH(XIN) twL(XIN) tc(CNTR) twH(CNTR) twL(CNTR) twH(INT) twL(INT) tc(SCLK1) twH(SCLK1) twL(SCLK1) tsu(RXD–SCLK1) th(SCLK1–RXD) tc(SCLK2) twH(SCLK2) twL(SCLK2) tsu(SIN2–SCLK2) th(SCLK2–SIN2) Parameter Reset input “L” pulse width Main clock input cycle time (XIN input) Main clock input “H” pulse width Main clock input “L” pulse width CNTR0, CNTR1 input cycle time CNTR0, CNTR1 input “H” pulse width CNTR0, CNTR1 input “L” pulse width INT0 to INT2 input “H” pulse width INT0 to INT2 input “L” pulse width Serial I/O1 clock input cycle time (Note) Serial I/O1 clock input “H” pulse width (Note) Serial I/O1 clock input “L” pulse width (Note) Serial I/O1 input set up time Serial I/O1 input hold time Serial I/O2 clock input cycle time (Note) Serial I/O2 clock input “H” pulse width (Note) Serial I/O2 clock input “L” pulse width (Note) Serial I/O2 input set up time Serial I/O2 input hold time Min. 2 125 45 40 250 105 105 80 80 800 370 370 220 100 1000 400 400 200 200 Limits Typ. Max. Unit µs ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns Note: When bit 6 of address 001A16 is “1”. Divide this value by four when bit 6 of address 001A16 is “0”. Table 26 Timing requirements 2 (VCC = 2.5 to 4.0 V, VSS = 0 V, Ta = –20 to 85°C, unless otherwise noted) Symbol tw(RESET) tc(XIN) twH(XIN) twL(XIN) tc(CNTR) twH(CNTR) twL(CNTR) twH(INT) twL(INT) tc(SCLK1) twH(SCLK1) twL(SCLK1) tsu(RXD–SCLK1) th(SCLK1–RXD) tc(SCLK2) twH(SCLK2) twL(SCLK2) tsu(SIN2–SCLK2) th(SCLK2–SIN2) Parameter Reset input “L” pulse width Main clock input cycle time (XIN input) Main clock input “H” pulse width Main clock input “L” pulse width CNTR0, CNTR1 input cycle time CNTR0, CNTR1 input “H” pulse width CNTR0, CNTR1 input “L” pulse width INT0 to INT2 input “H” pulse width INT0 to INT2 input “L” pulse width Serial I/O1 clock input cycle time (Note) Serial I/O1 clock input “H” pulse width (Note) Serial I/O1 clock input “L” pulse width (Note) Serial I/O1 input set up time Serial I/O1 input hold time Serial I/O2 clock input cycle time (Note) Serial I/O2 clock input “H” pulse width (Note) Serial I/O2 clock input “L” pulse width (Note) Serial I/O2 input set up time Serial I/O2 input hold time Limits Min. 2 125 45 40 500/(VCC–2) 250/(VCC–2)–20 250/(VCC–2)–20 230 230 2000 950 950 400 200 2000 950 950 400 300 Typ. Max. Unit µs ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns Note: When bit 6 of address 001A16 is “1”. Divide this value by four when bit 6 of address 001A16 is “0”. 64 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER Table 27 Switching characteristics 1 (VCC = 4.0 to 5.5 V, VSS = 0 V, Ta = –20 to 85°C, unless otherwise noted) Symbol twH(SCLK1) twL(SCLK1) td(SCLK1–TXD) tv(SCLK1–TXD) tr(SCLK1) tf(SCLK1) twH(SCLK2) twL(SCLK2) td(SCLK2–SOUT2) tv(SCLK2–SOUT2) tf(SCLK2) tr(CMOS) tf(CMOS) Parameter Serial I/O1 clock output “H” pulse width Serial I/O1 clock output “L” pulse width Serial I/O1 output delay time (Note 1) Serial I/O1 output valid time (Note 1) Serial I/O1 clock output rising time Serial I/O1 clock output falling time Serial I/O2 clock output “H” pulse width Serial I/O2 clock output “L” pulse width Serial I/O2 output delay time Serial I/O2 output valid time Serial I/O2 clock output falling time CMOS output rising time (Note 2) CMOS output falling time (Note 2) Limits Min. tC (SCLK1)/2–30 tC (SCLK1)/2–30 –30 30 30 tC (SCLK2)/2–160 tC (SCLK2)/2–160 0.2 ✕ tC (SCLK2) 0 10 10 40 30 30 Typ. Max. Unit ns ns ns ns ns ns ns ns ns ns ns ns ns 140 Notes1: When the P45/TXD P-channel output disable bit of the UART control register (bit 4 of address 001B16) is “0”. 2: XOUT and XCOUT pins are excluded. Table 28 Switching characteristics 2 (VCC = 2.5 to 4.0 V, VSS = 0 V, Ta = –20 to 85°C, unless otherwise noted) Symbol twH(SCLK1) twL(SCLK1) Parameter Serial I/O1 clock output “H” pulse width Serial I/O1 clock output “L” pulse width Serial I/O1 output delay time (Note 1) Serial I/O1 output valid time (Note 1) Serial I/O1 clock output rising time Serial I/O1 clock output falling time Serial I/O2 clock output “H” pulse width Serial I/O2 clock output “L” pulse width Serial I/O2 output delay time Serial I/O2 output valid time Serial I/O2 clock output falling time CMOS output rising time (Note 2) CMOS output falling time (Note 2) Min. tC (SCLK1)/2–50 tC (SCLK1)/2–50 –30 Limits Typ. Max. Unit ns ns ns ns ns ns ns ns ns ns ns ns ns td(SCLK1–TXD) tv(SCLK1–TXD) tr(SCLK1) tf(SCLK1) twH(SCLK2) twL(SCLK2) td(SCLK2–SOUT2) tv(SCLK2–SOUT2) tf(SCLK2) tr(CMOS) tf(CMOS) 350 50 50 tC (SCLK2)/2–240 tC (SCLK2)/2–240 0.2 ✕ tC (SCLK2) 0 20 20 50 50 50 Notes1: When the P45/TXD P-channel output disable bit of the UART control register (bit 4 of address 001B16) is “0”. 2: XOUT and XCOUT pins are excluded. 65 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER ELECTRICAL CHARACTERISTICS (Low Voltage Version) ABSOLUTE MAXIMUM RATINGS (Low Voltage Version) Table 29 Absolute maximum ratings (low voltage version) Symbol VCC VI VI VI VI VI VI VI VO VO VO VO VO VO Pd Topr Tstg Parameter Power source voltage (Note 1) Input voltage P00–P07, P10–P17, P20–P27, P40–P47, P50–P57, P60–P67 Input voltage P70–P77 Input voltage VL1 Input voltage VL2 Input voltage VL3 (Note 2) Input voltage C1, C2 (Note 1) Input voltage RESET, XIN Output voltage C1, C2 (Note 1) Output voltage P00–P07, P10–P15, P30–P37 Output voltage P16, P17, P20–P27, P40–P47, P50–P57, P60–P67, P71–P77 Output voltage VL3 (Note 1) Output voltage VL2, SEG0–SEG17 Output voltage XOUT Power dissipation Operating temperature Storage temperature Conditions Ratings –0.3 to 6.5 –0.3 to VCC +0.3 –0.3 to VCC +0.3 All voltages are based on VSS. Output transistors are cut off. –0.3 to VL2 VL1 to VL3 VL2 to 6.5 –0.3 to 6.5 –0.3 to VCC +0.3 –0.3 to 6.5 –0.3 to VCC –0.3 to VL3 –0.3 to VCC +0.3 –0.3 to 6.5 –0.3 to VL3 –0.3 to VCC +0.3 300 –20 to 85 –40 to 125 Unit V V V V V V V V V V V V V V V mW °C °C At output port At segment output Ta = 25°C Notes 1: –0.3 V to 7.0 V for M38267M8L. 2: VL2 to 7.0 V for M38267M8L. RECOMMENDED OPERATING CONDITIONS (Low Voltage Version) Table 30 Recommended operating conditions (1) (low voltage version) (V CC = 2.2 to 5.5 V, Ta = –20 to 85°C, unless otherwise noted) Symbol Parameter High-speed mode f(XIN) = 8 MHz Middle-speed mode f(XIN) = 8 MHz Low-speed mode Min. 4.0 2.2 2.2 2.0 0 AVSS VCC Limits Typ. 5.0 5.0 5.0 0 Max. 5.5 5.5 5.5 VCC Unit VCC VSS VREF AVSS VIA Power source voltage V V V V V Power source voltage A-D, D-A conversion reference voltage Analog power source voltage Analog input voltage AN0–AN7 66 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER Table 31 Recommended operating conditions (2) (low voltage version) (V CC = 2.5 to 5.5 V, Ta = –20 to 85°C, unless otherwise noted) Symbol VIH VIH VIH VIH VIL VIL VIL VIL “H” input voltage “H” input voltage “H” input voltage “H” input voltage “L” input voltage “L” input voltage “L” input voltage “L” input voltage Parameter P00–P07, P10–P17, P40, P43, P45, P47, P50–P53, P56, P61, P64–P67, P71–P77 P20–P27, P41, P42, P44, P46, P54, P55, P57, P60, P62, P63, P70 RESET XIN P00–P07, P10–P17, P40, P43, P45, P47, P50–P53, P56, P61, P64–P67, P71–P77 P20–P27, P41, P42, P44, P46, P54, P55, P57, P60, P62, P63, P70 RESET XIN Min. 0.7 VCC 0.8 VCC 0.8 VCC 0.8 VCC 0 0 0 0 Limits Typ. Max. VCC VCC VCC VCC 0.3 VCC 0.2 VCC 0.2 VCC 0.2 VCC Unit V V V V V V V V Table 32 Recommended operating conditions (3) (low voltage version) (V CC = 2.2 to 2.5 V, Ta = –20 to 85°C, unless otherwise noted) Symbol VIH VIH VIH VIH VIL VIL VIL VIL “H” input voltage “H” input voltage “H” input voltage “H” input voltage “L” input voltage “L” input voltage “L” input voltage “L” input voltage Parameter P00–P07, P10–P17, P40, P43, P45, P47, P50–P53, P56, P61, P64–P67, P71–P77 P20–P27, P41, P42, P44, P46, P54, P55, P57, P60, P62, P63, P70 RESET XIN P00–P07, P10–P17, P40, P43, P45, P47, P50–P53, P56, P61, P64–P67, P71–P77 P20–P27, P41, P42, P44, P46, P54, P55, P57, P60, P62, P63, P70 RESET XIN Min. 0.8 VCC 0.95 VCC 0.95 VCC 0.95 VCC 0 0 0 0 Limits Typ. Max. VCC VCC VCC VCC 0.2 VCC 0.05 VCC 0.05 VCC 0.05 VCC Unit V V V V V V V V 67 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER Table 33 Recommended operating conditions (4) (low voltage version) (VCC = 2.2 to 5.5 V, Ta = –20 to 85°C, unless otherwise noted) Symbol ΣIOH(peak) ΣIOH(peak) ΣIOL(peak) ΣIOL(peak) ΣIOL(peak) ΣIOH(avg) ΣIOH(avg) ΣIOL(avg) ΣIOL(avg) ΣIOL(avg) IOH(peak) IOH(peak) IOL(peak) IOL(peak) IOL(peak) IOH(avg) IOH(avg) IOL(avg) IOL(avg) IOL(avg) “H” total peak output current “H” total peak output current “L” total peak output current “L” total peak output current “L” total peak output current “H” total average output current “H” total average output current “L” total average output current “L” total average output current “L” total average output current “H” peak output current “H” peak output current “L” peak output current “L” peak output current “L” peak output current “H” average output current “H” average output current “L” average output current “L” average output current “L” average output current Parameter P00–P07, P10–P17, P20–P27, P30–P37 (Note 1) P41–P47, P50–P57, P60–P67 (Note 1) P00–P07, P10–P17, P20–P27, P30–P37 (Note 1) P41–P47, P50–P57, P60–P67 (Note 1) P40, P71–P77 (Note 1) P00–P07, P10–P17, P20–P27, P30–P37 (Note 1) P41–P47, P50–P57, P60–P67 (Note 1) P00–P07, P10–P17, P20–P27, P30–P37 (Note 1) P41–P47, P50–P57, P60–P67 (Note 1) P40, P71–P77 (Note 1) P00–P07, P10–P15, P30–P37 (Note 2) P16, P17, P20–P27, P41–P47, P50–P57, P60–P67 (Note 2) P00–P07, P10–P15, P30–P37 (Note 2) P16, P17, P20–P27, P41–P47, P50–P57, P60–P67 (Note 2) P40, P71–P77 (Note 2) P00–P07, P10–P15, P30–P37 (Note 3) P16, P17, P20–P27, P41–P47, P50–P57, P60–P67 P00–P07, P10–P15, P30–P37 (Note 3) P16, P17, P20–P27, P41–P47, P50–P57, P60–P67 (Note 3) P40, P71–P77 (Note 3) Min. Limits Typ. Max. –20 –20 20 20 80 –10 –10 10 10 40 –1.0 –5.0 5.0 10 20 –0.5 –2.5 2.5 5.0 10 Unit mA mA mA mA mA mA mA mA mA mA mA mA mA mA mA mA mA mA mA mA Notes1: The total output current is the sum of all the currents flowing through all the applicable ports. The total average current is an average value measured over 100 ms. The total peak current is the peak value of all the currents. 2: The peak output current is the peak current flowing in each port. 3: The average output current is an average value measured over 100 ms. 68 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER Table 34 Recommended operating conditions (5) (low voltage version) (V CC = 2.2 to 5.5 V, Ta = –20 to 85°C, unless otherwise noted) Symbol f(CNTR0) f(CNTR1) Parameter Input frequency for timers X and Y (duty cycle 50%) Test conditions (4.0 V ≤ VCC ≤ 5.5 V) (VCC ≤ 4.0 V) High-speed mode (4.0 V ≤ VCC ≤ 5.5 V) f(XIN) Main clock input oscillation frequency (Note 1) High-speed mode (2.2 V ≤ VCC ≤ 4.0 V) Middle-speed mode Min. Limits Typ. Max. 4.0 Unit MHz (10✕VCC –4)/9 MHz 8.0 MHz f(XCIN) Sub-clock input oscillation frequency (Notes 1, 2) (20✕VCC –8)/9 MHz MHz 8.0 32.768 kHz 50 Notes1: When the oscillation frequency has a duty cycle of 50%. 2: When using the microcomputer in low-speed mode, make sure that the sub-clock input oscillation frequency on condition that f(XCIN) < f(XIN)/3. 69 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER Table 35 Electrical characteristics (1) (low voltage version) (VCC =4.0 to 5.5 V, Ta = –20 to 85°C, unless otherwise noted) Symbol Parameter “H” output voltage P00–P07, P10–P15, P30–P37 “H” output voltage P16, P17, P20–P27, P41–P47, P50–P57, P60–P67 (Note 1) Test conditions IOH = –1 mA IOH = –0.25 mA VCC = 2.2 V IOH = –5 mA IOH = –1.5 mA IOH = –1.25 mA VCC = 2.2 V IOL = 5 mA IOL = 1.5 mA IOL = 1.25 mA VCC = 2.2 V IOL = 10 mA IOL = 3.0 mA IOL = 2.5 mA VCC = 2.2 V IOL = 10 mA IOL = 5 mA VCC = 2.2 V Limits Min. VCC–2.0 VCC–0.8 VCC–2.0 VCC–0.5 VCC–0.8 2.0 0.5 0.8 2.0 0.5 0.8 0.5 0.3 0.5 0.5 0.5 5.0 5.0 4.0 –5.0 –60.0 –5.0 –120.0 –20.0 –240.0 –40.0 –5.0 –5.0 –4.0 –60.0 –5.0 –120.0 –20.0 –240.0 –40.0 5.0 –5.0 Typ. Max. Unit V V V V V V V V V V V V V V V V µA µA µA µA µA µA µA µA µA µA µA µA µA VOH VOH VOL “L” output voltage P00–P07, P10–P15, P30–P37 VOL “L” output voltage P16, P17, P20–P27, P41–P47, P50–P57, P60–P67 “L” output voltage P40, P71–P77 VOL VT+ – VT– VT+ – VT– VT+ – VT– IIH IIH IIH IIL IIL IIL IIL ILOAD Hysteresis INT0–INT2, ADT, CNTR0, CNTR1, P20–P27 Hysteresis SCLK, RXD, SIN2 Hysteresis RESET “H” input current P00–P07, P10–P17, P20–P27, P40–P47, VI = VCC P50–P57, P60–P67, P70–P77 “H” input current RESET VI = VCC “H” input current XIN VI = VCC VI = VSS Pull-ups “off” “L” input current VCC = 5 V, VI = VSS P00–P07,P10–P17, P20–P27,P41–P47, Pull-ups “on” P50–P57, P60–P67 VCC = 2.2 V, VI = VSS Pull-ups “on” “L” input current P40, P70–P77 “L” input current RESET VI = VSS “L” input current XIN VI = VSS VCC = 5.0 V, VO = VCC, Pullup ON Output transistors “off” Output load current P30–P37 VCC = 2.2 V,VO = VCC, Pullup ON Output transistors “off” Output leak current P30–P37 VO = VCC, Pullup OFF Output transistors “off” VO = VSS, Pullup OFF Output transistors “off” ILEAK 70 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER Table 36 Electrical characteristics (2) (low voltage version) (VCC =2.2 to 5.5 V, Ta = –20 to 85°C, unless otherwise noted) Symbol VRAM Parameter RAM retention voltage Test conditions At clock stop mode • High-speed mode, VCC = 5 V f(XIN) = 8 MHz f(XCIN) = 32.768 kHz Output transistors “off” A-D converter in operating • High-speed mode, VCC = 5 V f(XIN) = 8 MHz (in WIT state) f(XCIN) = 32.768 kHz Output transistors “off” A-D converter stop • Low-speed mode, VCC = 5 V, Ta ≤ 55°C f(XIN) = stopped f(XCIN) = 32.768 kHz Output transistors “off” ICC Power source current • Low-speed mode, VCC = 5 V, Ta = 25°C f(XIN) = stopped f(XCIN) = 32.768 kHz (in WIT state) Output transistors “off” • Low-speed mode, VCC = 3 V, Ta ≤ 55°C f(XIN) = stopped f(XCIN) = 32.768 kHz Output transistors “off” • Low-speed mode, VCC = 3 V, Ta = 25°C f(XIN) = stopped f(XCIN) = 32.768 kHz (in WIT state) Output transistors “off” All oscillation stopped (in STP state) Output transistors “off” (M38268MCL, M3826AMFL) All oscillation stopped (in STP state) Output transistors “off” (M38267M8L) When using voltage multiplier Ta = 25 °C Ta = 85 °C Ta = 25 °C Ta = 55 °C M38268MCL, M3826AMFL M38267M8L 1.3 1.3 1.8 1.8 4.0 0.5 0.1 1.0 10 10 60 2.1 2.3 µA µA V µA 8 16 µA 18 36 µA 23 46 µA 45 67 µA 2.5 4.0 mA 8.0 15 mA Min. 2.0 Limits Typ. Max. 5.5 Unit V VL1 Power source voltage IL1 Power source current (VL1) (Note) VL1 = 1.8 V Note: When the voltage multiplier control bit of the LCD mode register (bit 4 at address 003916) is “1”. 71 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER Table 37 A-D converter characteristics (low voltage version) (VCC = 2.7 to 5.5 V, VSS = AVSS = 0 V, Ta = –20 to 85°C, 500 kHz ≤ f(XIN) ≤ 8 MHz, in middle/high-speed mode unless otherwise noted) Symbol – – tCONV RLADDER IVREF IIA Parameter Resolution Absolute accuracy (excluding quantization error) Conversion time Ladder resistor Reference power source input current Analog port input current Test conditions Min. Limits Typ. Max. 8 ±2 12.5 (Note) 100 200 5.0 Unit Bits LSB µs kΩ µA µA VCC = VREF = 2.7 to 5.5 V f(XIN) = 8 MHz 12 50 35 150 VREF = 5 V Note: When an internal trigger is used in middle-speed mode, it is 14 µs. Table 38 D-A converter characteristics (low voltage version) (VCC = 2.7 to 5.5 V, VCC = VREF, VSS = AVSS = 0 V, Ta = –20 to 85°C, in middle/high-speed mode unless otherwise noted) Symbol – – tsu RO IVREF Resolution Absolute accuracy Setting time Output resistor Reference power M38268MCL, M3826AMFL source input current M38267M8L VCC = VREF = 5 V VCC = VREF = 2.7 V 1 (Note) (Note) 3 2.5 Parameter Test conditions Min. Limits Typ. Max. 8 1.0 2.0 4 3.2 6.0 Unit Bits % % µs kΩ mA mA Note: Using one D-A converter, with the value in the D-A conversion register of the other D-A converter being “0016”, and excluding currents flowing through the A-D resistance ladder. 72 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER Table 39 Timing requirements 1 (low voltage version) (VCC = 4.0 to 5.5 V, VSS = 0 V, Ta = –20 to 85°C, unless otherwise noted) Symbol tw(RESET) tc(XIN) twH(XIN) twL(XIN) tc(CNTR) twH(CNTR) twL(CNTR) twH(INT) twL(INT) tc(SCLK1) twH(SCLK1) twL(SCLK1) tsu(RXD–SCLK1) th(SCLK1–RXD) tc(SCLK2) twH(SCLK2) twL(SCLK2) tsu(SIN2–SCLK2) th(SCLK2–SIN2) Parameter Reset input “L” pulse width Main clock input cycle time (XIN input) Main clock input “H” pulse width Main clock input “L” pulse width CNTR0, CNTR1 input cycle time CNTR0, CNTR1 input “H” pulse width CNTR0, CNTR1 input “L” pulse width INT0 to INT2 input “H” pulse width INT0 to INT2 input “L” pulse width Serial I/O1 clock input cycle time (Note) Serial I/O1 clock input “H” pulse width (Note) Serial I/O1 clock input “L” pulse width (Note) Serial I/O1 input set up time Serial I/O1 input hold time Serial I/O2 clock input cycle time (Note) Serial I/O2 clock input “H” pulse width (Note) Serial I/O2 clock input “L” pulse width (Note) Serial I/O2 input set up time Serial I/O2 input hold time Min. 2 125 45 40 250 105 105 80 80 800 370 370 220 100 1000 400 400 200 200 Limits Typ. Max. Unit µs ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns Note: When bit 6 of address 001A16 is “1”. Divide this value by four when bit 6 of address 001A16 is “0”. Table 40 Timing requirements 2 (low voltage version) (VCC = 2.2 to 4.0 V, VSS = 0 V, Ta = –20 to 85°C, unless otherwise noted) Symbol tw(RESET) tc(XIN) twH(XIN) twL(XIN) tc(CNTR) twH(CNTR) twL(CNTR) twH(INT) twL(INT) tc(SCLK1) twH(SCLK1) twL(SCLK1) tsu(RXD–SCLK1) th(SCLK1–RXD) tc(SCLK2) twH(SCLK2) twL(SCLK2) tsu(SIN2–SCLK2) th(SCLK2–SIN2) Parameter Reset input “L” pulse width Main clock input cycle time (XIN input) Main clock input “H” pulse width Main clock input “L” pulse width CNTR0, CNTR1 input cycle time CNTR0, CNTR1 input “H” pulse width CNTR0, CNTR1 input “L” pulse width INT0 to INT2 input “H” pulse width INT0 to INT2 input “L” pulse width Serial I/O1 clock input cycle time (Note) Serial I/O1 clock input “H” pulse width (Note) Serial I/O1 clock input “L” pulse width (Note) Serial I/O1 input set up time Serial I/O1 input hold time Serial I/O2 clock input cycle time (Note) Serial I/O2 clock input “H” pulse width (Note) Serial I/O2 clock input “L” pulse width (Note) Serial I/O2 input set up time Serial I/O2 input hold time Limits Min. 2 125 45 40 900/(VCC–0.4) tc(CNTR)/2–20 tc(CNTR)/2–20 230 230 2000 950 950 400 200 2000 950 950 400 300 Typ. Max. Unit µs ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns Note: When bit 6 of address 001A16 is “1”. Divide this value by four when bit 6 of address 001A16 is “0”. 73 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER Table 41 Switching characteristics 1 (low voltage version) (VCC = 4.0 to 5.5 V, VSS = 0 V, Ta = –20 to 85°C, unless otherwise noted) Symbol twH(SCLK1) twL(SCLK1) td(SCLK1–TXD) tv(SCLK1–TXD) tr(SCLK1) tf(SCLK1) twH(SCLK2) twL(SCLK2) td(SCLK2–SOUT2) tv(SCLK2–SOUT2) tf(SCLK2) tr(CMOS) tf(CMOS) Parameter Serial I/O1 clock output “H” pulse width Serial I/O1 clock output “L” pulse width Serial I/O1 output delay time (Note 1) Serial I/O1 output valid time (Note 1) Serial I/O1 clock output rising time Serial I/O1 clock output falling time Serial I/O2 clock output “H” pulse width Serial I/O2 clock output “L” pulse width Serial I/O2 output delay time Serial I/O2 output valid time Serial I/O2 clock output falling time CMOS output rising time (Note 2) CMOS output falling time (Note 2) Limits Min. tC (SCLK1)/2–30 tC (SCLK1)/2–30 –30 30 30 tC (SCLK2)/2–160 tC (SCLK2)/2–160 0.2 ✕ tC (SCLK2) 0 10 10 40 30 30 Typ. Max. Unit ns ns ns ns ns ns ns ns ns ns ns ns ns 140 Notes1: When the P45/TXD P-channel output disable bit of the UART control register (bit 4 of address 001B16) is “0”. 2: XOUT and XCOUT pins are excluded. Table 42 Switching characteristics 2 (low voltage version) (VCC = 2.2 to 4.0 V, VSS = 0 V, Ta = –20 to 85°C, unless otherwise noted) Symbol twH(SCLK1) twL(SCLK1) Parameter Serial I/O1 clock output “H” pulse width Serial I/O1 clock output “L” pulse width Serial I/O1 output delay time (Note 1) Serial I/O1 output valid time (Note 1) Serial I/O1 clock output rising time Serial I/O1 clock output falling time Serial I/O2 clock output “H” pulse width Serial I/O2 clock output “L” pulse width Serial I/O2 output delay time Serial I/O2 output valid time Serial I/O2 clock output falling time CMOS output rising time (Note 2) CMOS output falling time (Note 2) Min. tC (SCLK1)/2–50 tC (SCLK1)/2–50 –30 Limits Typ. Max. Unit ns ns ns ns ns ns ns ns ns ns ns ns ns td(SCLK1–TXD) tv(SCLK1–TXD) tr(SCLK1) tf(SCLK1) twH(SCLK2) twL(SCLK2) td(SCLK2–SOUT2) tv(SCLK2–SOUT2) tf(SCLK2) tr(CMOS) tf(CMOS) 350 50 50 tC (SCLK2)/2–240 tC (SCLK2)/2–240 0.2 ✕ tC (SCLK2) 0 20 20 50 50 50 Notes1: When the P45/TXD P-channel output disable bit of the UART control register (bit 4 of address 001B16) is “0”. 2: XOUT and XCOUT pins are excluded. 74 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER 1 kΩ Measurement output pin 100 pF Measurement output pin 100 pF CMOS output N-channel open-drain output (Note) Note: When P71–P77, P40 and bit 4 of the UART control register (address 001B16 ) is “1” (N-channel opendrain output mode). Fig. 60 Circuit for measuring output switching characteristics 75 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER tC(CNTR) tWH(CNTR) tWL(CNTR) 0.2VCC C N TR 0 , C N TR 1 0.8VCC tWH(INT) tWL(INT) 0.2VCC INT0–INT2 0.8VCC tW(RESET) RESET 0.2VCC 0.8VCC tC(XIN) tWH(XIN) tWL(XIN) 0.2VCC XI N 0.8VCC tf tC(SCLK1), tC(SCLK2) tr tWL(SCLK1), tWL(SCLK2) 0.2VCC tsu(RXD-SCLK1), tsu(SIN2-SCLK2) 0.8VCC tWH(SCLK1), tWH(SCLK2) SCLK1 SCLK2 th(SCLK1-RXD), th(SCLK2-SIN2) RX D SIN2 0.8VCC 0.2VCC td(SCLK1-TXD),td(SCLK2-SOUT2) tv(SCLK1-TXD), tv(SCLK2-SOUT2) TX D SOUT2 Fig. 61 Timing diagram 76 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER PACKAGE OUTLINE 100P6Q-A MMP JEDEC Code – Weight(g) 0.63 Lead Material Cu Alloy Plastic 100pin 14✕14mm body LQFP MD e EIAJ Package Code LQFP100-P-1414-0.50 D 100 76 1 75 b2 HD l2 Recommended Mount Pad Symbol A A1 A2 b c D E e HD HE L L1 Lp A3 A3 25 51 26 50 A e F A2 L1 x y b2 I2 MD ME M Detail F Lp 100P6S-A MMP JEDEC Code – HD D Weight(g) 1.58 Lead Material Alloy 42 c b x y L Dimension in Millimeters Min Nom Max – – 1.7 0.1 0.2 0 – – 1.4 0.13 0.18 0.28 0.105 0.125 0.175 13.9 14.0 14.1 13.9 14.0 14.1 – 0.5 – 15.8 16.0 16.2 15.8 16.0 16.2 0.3 0.5 0.7 1.0 – – 0.45 0.6 0.75 – 0.25 – – – 0.08 – – 0.1 – 0° 10° – – 0.225 0.9 – – 14.4 – – – – 14.4 HE E A1 Plastic 100pin 14✕20mm body QFP MD EIAJ Package Code QFP100-P-1420-0.65 e 1 80 b2 100 81 I2 Recommended Mount Pad Symbol Dimension in Millimeters Min Nom Max 3.05 – – 0.1 0.2 0 2.8 – – 0.25 0.3 0.4 0.13 0.15 0.2 13.8 14.0 14.2 19.8 20.0 20.2 0.65 – – 16.5 16.8 17.1 22.5 22.8 23.1 0.4 0.6 0.8 1.4 – – – – 0.13 0.1 – – 0° 10° – 0.35 – – 1.3 – – 14.6 – – 20.6 – – HE E 30 51 31 50 A L1 A A1 A2 b c D E e HD HE L L1 x y b2 I2 MD ME A2 F b A1 e y x M Detail F c L ME ME 77 MITSUBISHI MICROCOMPUTERS 3826 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER Keep safety first in your circuit designs! • Mitsubishi Electric Corporation puts the maximum effort into making semiconductor products better and more reliable, but there is always the possibility that trouble may occur with them. Trouble with semiconductors may lead to personal injury, fire or property damage. Remember to give due consideration to safety when making your circuit designs, with appropriate measures such as (i) placement of substitutive, auxiliary circuits, (ii) use of non-flammable material or (iii) prevention against any malfunction or mishap. Notes regarding these materials • • • These materials are intended as a reference to assist our customers in the selection of the Mitsubishi semiconductor product best suited to the customer’s application; they do not convey any license under any intellectual property rights, or any other rights, belonging to Mitsubishi Electric Corporation or a third party. Mitsubishi Electric Corporation assumes no responsibility for any damage, or infringement of any third-party’s rights, originating in the use of any product data, diagrams, charts, programs, algorithms, or circuit application examples contained in these materials. All information contained in these materials, including product data, diagrams, charts, programs and algorithms represents information on products at the time of publication of these materials, and are subject to change by Mitsubishi Electric Corporation without notice due to product improvements or other reasons. It is therefore recommended that customers contact Mitsubishi Electric Corporation or an authorized Mitsubishi Semiconductor product distributor for the latest product information before purchasing a product listed herein. The information described here may contain technical inaccuracies or typographical errors. Mitsubishi Electric Corporation assumes no responsibility for any damage, liability, or other loss rising from these inaccuracies or errors. Please also pay attention to information published by Mitsubishi Electric Corporation by various means, including the Mitsubishi Semiconductor home page (http://www.mitsubishichips.com). When using any or all of the information contained in these materials, including product data, diagrams, charts, programs, and algorithms, please be sure to evaluate all information as a total system before making a final decision on the applicability of the information and products. Mitsubishi Electric Corporation assumes no responsibility for any damage, liability or other loss resulting from the information contained herein. Mitsubishi Electric Corporation semiconductors are not designed or manufactured for use in a device or system that is used under circumstances in which human life is potentially at stake. Please contact Mitsubishi Electric Corporation or an authorized Mitsubishi Semiconductor product distributor when considering the use of a product contained herein for any specific purposes, such as apparatus or systems for transportation, vehicular, medical, aerospace, nuclear, or undersea repeater use. The prior written approval of Mitsubishi Electric Corporation is necessary to reprint or reproduce in whole or in part these materials. If these products or technologies are subject to the Japanese export control restrictions, they must be exported under a license from the Japanese government and cannot be imported into a country other than the approved destination. Any diversion or reexport contrary to the export control laws and regulations of Japan and/or the country of destination is prohibited. Please contact Mitsubishi Electric Corporation or an authorized Mitsubishi Semiconductor product distributor for further details on these materials or the products contained therein. • • • • • © 2001 MITSUBISHI ELECTRIC CORP. Specifications subject to change without notice. REVISION HISTORY Rev. 1.0 1.1 1.2 Date Page 03/28/01 08/06/01 05/12/01 57 66 7 8 14 52 56 60 62 63 64 3826 GROUP DATA SHEET Description Summary First Edition Table 17 VREF Min. VCC+0.3 → VCC Table 30 VREF Min. VCC+0.3 → VCC Fig.5 M3826AEF; Under development → Mass product Fig.6 M38268MCL; Under development → Mass product, M3826AMFL added. Fig.11 Note for “Reserved area” added. Oscillation Control (1) Stop mode revised. URL revised; mesc → maec Table 20 f(CNTR0), f(CNTR1); (10✕VCC–4)/9 → (2✕VCC)–4 f(XIN); (20✕VCC–8)/9 → (4✕VCC)–8 Table 22 Table 23 Table 26 ICC values revised. (M38267E8) Ta = 85 °C → Ta = 55 °C VCC=VREF=5 V → VCC=VREF=2.7 to 5.5 V tC(CNTR); 900/(VCC+0.4) → 500/(VCC–2) tWH(CNTR); tC(CNTR)/20 → 250/(VCC–2)–20 tWL(CNTR); tC(CNTR)/20 → 250/(VCC–2)–20 VCC Note 1 added. Vo; VL3 (Note 2) → (Note 1) (M38268MCL) → (M38268MCL, M3826AMFL) (M38267M8L), Ta = 25 °C; 1.0 → 10 (M38267M8L) Ta = 85 °C → Ta = 55 °C VCC=VREF=5 V → VCC=VREF=2.7 to 5.5 V (M38268MCL) → (M38268MCL, M3826AMFL) tC(CNTR); 900/(VCC+0.4) → 900/(VCC–0.4) 66 71 Table 29 Table 36 72 73 Table 37 Table 38 Table 40 (1/1)

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