PIC12F629/675

“Wide variety”

• 8-84 pin

• RISC core, 12/14/16bit program word

• USART/AUSART, I2C, ADC, ICSP, ICD

• OTP/UV EPROM/FLASH/ROM

• Families: PIC12, PIC16, PIC17, PIC18

Highlights• 14bit program word• 1792Bytes (1024k words) FLASH program memory (105 e/w)• 64Bytes 8-bit RAM• 128Bytes 8-bit EEPROM (106 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 (< 1.0 mA @ 5.5V, 4.0 MHz), high speed, static)

Blokové schema

Registers• 2 banks, switch via STATUS<5>

• Special Function Regs– 00h-1Fh – Core– Peripheral

• General Purpose Regs– 20h-5Fh / A0-DFh– Mapped bank1bank0

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• 2.0-5.5V (A/D off, -40°C-85°C)

• 2.2-5.5V (A/D on, 0°C-85°C)

• 2.5-5.5V (A/D on, -40°C-85°C)

– 4-10MHz• 3.0-5.5V (0°C-85°C)

– >10MHz• 4.5-5.5V (-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