PIC12F629/675

“Wide variety” 8-84 pin RISC core, 12/14/16bit program word USART/AUSART, I 2 C, ADC, ICSP, ICD OTP/UV EPROM/FLASH/ROM Families: PIC12, PIC16, PIC17, PIC18

Highlights 14bit program word 1792Bytes (1024k words) FLASH program memory (10 5 e/w) 64Bytes 8-bit RAM 128Bytes 8-bit EEPROM (10 6 erase/write cycle) 6 I/O Pins, 24mA/pin 10bit A/D Convertor (12F675 only) Comparator 1x8b, 1x16b, 1xWDT timers DC-20MHz clock or internal 4MHz oscillator ICD Single-cycle instructions (branches 2) 8-level stack Direct, indirect, relative addressing SLEEP mode CMOS design (low power (< V, 4.0 MHz), high speed, static)

Blokové schema

Registers 2 banks, switch via STATUS Special Function Regs –00h-1Fh –Core –Peripheral General Purpose Regs –20h-5Fh / A0-DFh –Mapped bank1  bank0

Core registers STATUS OPTION_REG INTCON PIE1 PIR1 PCON OSCCAL PCL PCLATH INDF FSR

Peripherals GPIO GPIO, TRISIO, WPU, IOCB TIMER0 8bit TIMER1 16bit, timer/async.counter/sync.counter COMPARATOR internal reference, output A/D 4x10bit multiplexed, available during SLEEP  bias reduce EEPROM 128B, auto erase-before-write

Features I Configuration word Oscilator DC-20MHz –LP,XT,HS –RC (CLKOUT/IO) –INTOSC (CLKOUT/IO) 4MHz –EC Reset –MCLR Master Clear –POR Power-on Reset –PWRT Power-up Timer 72ms –OST Oscillator Start-up Timer 1024c after PWRT –BOD Brown-out Detect

Features II Interrupts (nothing except PC is saved!) –External GP2/INT –TMR0 Overflow –GPIO Change –Comparator –A/D –TMR1 Overflow –EEPROM Data Write

Features III Watchdog Timer SLEEP Code Protection ID Location 2000h-2003h IN CIRCUIT SERIAL PROGRAMMING

Features IV Power –<=4MHz V (A/D off, -40°C-85°C) V (A/D on, 0°C-85°C) V (A/D on, -40°C-85°C) –4-10MHz V (0°C-85°C) –>10MHz V (-40°C-125°C)

ICSP GP0 Data I/O GP1 CLK GP3 Programming voltage Vss Ground Vdd Power

Instruction set Orthogonal 14bit word 35 instructions –Byte-oriented 6+1+7b –Bit-oriented 4+3+7b –Literal and control 6+8b or 3+11b (CALL, GOTO)

f … registr 00h-7Fh d … destination 0=W, 1=f b … bit address 0-7 k … literal Flags C,DC,Z

Byte-oriented ADDWF f,d ANDWF f,d CLRF f CLRW COMF f,d DECF f,d DECFSZ f,d INCF INCFSZ f,d IORWF f,d MOVF f,d MOVWF f NOP RLF f,d RRF f,d SUBWF f,d SWAPF f,d XORWF f,d

Bit-oriented BCF f,b BSF f,b BTFSC f,b BTFSS f,b

Literal and Control ADDLW k ANDLW k CLRWDT IORLW k MOVLW k SUBLW k XORLW k CALL k GOTO k RETFIE RETLW k RETURN SLEEP