14 Bit PIC Instruction Set

admin — Thu, 21 May 2009 16:52:37 +0000

The majority of devices in the PIC12 and PIC16 Midrange devices use this instruction set. It’s very similar to the 12 Bit PIC Instruction Set but the increased opcode width allows 128 registers and 2048 words of code to be directly addressed.

Opcode (binary)	Mnemonic	Description
`00 0000 0000 0000`	NOP	No operation
`00 0000 0000 1000`	RETURN	Return from subroutine, W unchanged
`00 0000 0000 1001`	RETFIE	Return from interrupt
`00 0000 0110 0010`	OPTION	Write W to OPTION register
`00 0000 0110 0011`	SLEEP	Go into standby mode
`00 0000 0110 0100`	CLRWDT	Reset watchdog timer
`00 0000 0110 01ff`	TRIS f	Write W to tristate register f

`00 0000 1 fffffff`	MOVWF f	Move W to f
`00 0001 0 xxxxxxx`	CLRW	Clear W to 0 (W = 0)
`00 0001 1 fffffff`	CLRF f	Clear f to 0 (f = 0)
`00 0010 d fffffff`	SUBWF f,d	Subtract W from f (d = f − W)
`00 0011 d fffffff`	DECF f,d	Decrement f (d = f − 1)
`00 0100 d fffffff`	IORWF f,d	Inclusive OR W with F (d = f OR W)
`00 0101 d fffffff`	ANDWF f,d	AND W with F (d = f AND W)
`00 0110 d fffffff`	XORWF f,d	Exclusive OR W with F (d = f XOR W)
`00 0111 d fffffff`	ADDWF f,d	Add W with F (d = f + W)
`00 1000 d fffffff`	MOVF f,d	Move F (d = f)
`00 1001 d fffffff`	COMF f,d	Complement f (d = NOT f)
`00 1010 d fffffff`	INCF f,d	Increment f (d = f + 1)
`00 1011 d fffffff`	DECFSZ f,d	Decrement f (d = f − 1) and skip if zero
`00 1100 d fffffff`	RRF f,d	Rotate right F (rotate right through carry)
`00 1101 d fffffff`	RLF f,d	Rotate left F (rotate left through carry)
`00 1110 d fffffff`	SWAPF f,d	Swap 4-bit halves of f (d = f<<4 \| f>>4)
`00 1111 d fffffff`	INCFSZ f,d	Increment f (d = f + 1) and skip if zero

`01 00 bbb fffffff`	BCF f,b	Bit clear f (Clear bit b of f)
`01 01 bbb fffffff`	BSF f,b	Bit set f (Set bit b of f)
`01 10 bbb fffffff`	BTFSC f,b	Bit test f, skip if clear (Test bit b of f)
`01 11 bbb fffffff`	BTFSS f,b	Bit test f, skip if set (Test bit b of f)

`10 0 kkkkkkkkkkk`	CALL k	Save return address, load PC with k
`10 1 kkkkkkkkkkk`	GOTO k	Jump to address k (11 bits)

`11 00xx kkkkkkkk`	MOVLW k	Move literal to W (W = k)
`11 01xx kkkkkkkk`	RETLW k	Set W to k and return
`11 1000 kkkkkkkk`	IORLW k	Inclusive or literal with W (W = k OR W)
`11 1001 kkkkkkkk`	ANDLW k	AND literal with W (W = k AND W)
`11 1010 kkkkkkkk`	XORLW k	Exclusive or literal with W (W = k XOR W)
`11 110x kkkkkkkk`	SUBLW k	Subtract W from literal (W = k − W)
`11 111x kkkkkkkk`	ADDLW k	Add literal to W (W = k + W)

Beginner Micro » devices

14 Bit PIC Instruction Set