12 Bit PIC Instruction Set

admin — Thu, 21 May 2009 16:32:46 +0000

Here’s the instruction set for Microchip’s Baseline devices. These include the PIC10 series as well as some of the PIC12 and PIC16.

Opcode (binary)	Mnemonic	Description
`0000 0000 0000`	NOP	No operation
`0000 0000 0010`	OPTION	Load OPTION register with contents of W
`0000 0000 0011`	SLEEP	Go into standby mode
`0000 0000 0100`	CLRWDT	Reset watchdog timer
`0000 0000 01ff`	TRIS f	Move W to port control register (f=1..3)

`0000 001 fffff`	MOVWF f	Move W to f
`0000 010 xxxxx`	CLRW	Clear W to 0 (a.k.a CLR x,W)
`0000 011 fffff`	CLRF f	Clear f to 0 (a.k.a. CLR f,F)
`0000 10d fffff`	SUBWF f,d	Subtract W from f (d = f − W)
`0000 11d fffff`	DECF f,d	Decrement f (d = f − 1)
`0001 00d fffff`	IORWF f,d	Inclusive OR W with F (d = f OR W)
`0001 01d fffff`	ANDWF f,d	AND W with F (d = f AND W)
`0001 10d fffff`	XORWF f,d	Exclusive OR W with F (d = f XOR W)
`0001 11d fffff`	ADDWF f,d	Add W with F (d = f + W)
`0010 00d fffff`	MOVF f,d	Move F (d = f)
`0010 01d fffff`	COMF f,d	Complement f (d = NOT f)
`0010 10d fffff`	INCF f,d	Increment f (d = f + 1)
`0010 11d fffff`	DECFSZ f,d	Decrement f (d = f − 1) and skip if zero
`0011 00d fffff`	RRF f,d	Rotate right F (rotate right through carry)
`0011 01d fffff`	RLF f,d	Rotate left F (rotate left through carry)
`0011 10d fffff`	SWAPF f,d	Swap 4-bit halves of f (d = f<<4 \| f>>4)
`0011 11d fffff`	INCFSZ f,d	Increment f (d = f + 1) and skip if zero

`0100 bbb fffff`	BCF f,b	Bit clear f (Clear bit b of f)
`0101 bbb fffff`	BSF f,b	Bit set f (Set bit b of f)
`0110 bbb fffff`	BTFSC f,b	Bit test f, skip if clear (Test bit b of f)
`0111 bbb fffff`	BTFSS f,b	Bit test f, skip if set (Test bit b of f)

`1000 kkkkkkkk`	RETLW k	Set W to k and return
`1001 kkkkkkkk`	CALL k	Save return address, load PC with k
`101 kkkkkkkkk`	GOTO k	Jump to address k (9 bits!)
`1100 kkkkkkkk`	MOVLW k	Move literal to W (W = k)
`1101 kkkkkkkk`	IORLW k	Inclusive or literal with W (W = k OR W)
`1110 kkkkkkkk`	ANDLW k	AND literal with W (W = k AND W)
`1111 kkkkkkkk`	XORLW k	Exclusive or literal with W (W = k XOR W)

Beginner Micro » asm

12 Bit PIC Instruction Set