Datasheet

PIC17C4X
DS30412C-page 110  1996 Microchip Technology Inc.
TABLE 15-2: PIC17CXX INSTRUCTION SET
Mnemonic,
Operands
Description Cycles 16-bit Opcode Status
Affected
Notes
MSb LSb
BYTE-ORIENTED FILE REGISTER OPERATIONS
ADDWF f,d ADD WREG to f 1 0000 111d ffff ffff OV,C,DC,Z
ADDWFC f,d ADD WREG and Carry bit to f 1 0001 000d ffff ffff OV,C,DC,Z
ANDWF f,d AND WREG with f 1 0000 101d ffff ffff Z
CLRF f,s Clear f, or Clear f and Clear WREG 1 0010 100s ffff ffff None 3
COMF f,d Complement f 1 0001 001d ffff ffff Z
CPFSEQ f Compare f with WREG, skip if f = WREG 1 (2) 0011 0001 ffff ffff None 6,8
CPFSGT f Compare f with WREG, skip if f > WREG 1 (2) 0011 0010 ffff ffff None 2,6,8
CPFSLT f Compare f with WREG, skip if f < WREG 1 (2) 0011 0000 ffff ffff None 2,6,8
DAW f,s Decimal Adjust WREG Register 1 0010 111s ffff ffff C3
DECF f,d Decrement f 1 0000 011d ffff ffff OV,C,DC,Z
DECFSZ f,d Decrement f, skip if 0 1 (2) 0001 011d ffff ffff None 6,8
DCFSNZ f,d Decrement f, skip if not 0 1 (2) 0010 011d ffff ffff None 6,8
INCF f,d Increment f 1 0001 010d ffff ffff OV,C,DC,Z
INCFSZ f,d Increment f, skip if 0 1 (2) 0001 111d ffff ffff None 6,8
INFSNZ f,d Increment f, skip if not 0 1 (2) 0010 010d ffff ffff None 6,8
IORWF f,d Inclusive OR WREG with f 1 0000 100d ffff ffff Z
MOVFP f,p Move f to p 1 011p pppp ffff ffff None
MOVPF p,f Move p to f 1 010p pppp ffff ffff Z
MOVWF f Move WREG to f 1 0000 0001 ffff ffff None
MULWF f Multiply WREG with f 1 0011 0100 ffff ffff None 9
NEGW f,s Negate WREG 1 0010 110s ffff ffff OV,C,DC,Z 1,3
NOP — No Operation 1 0000 0000 0000 0000 None
RLCF f,d Rotate left f through Carry 1 0001 101d ffff ffff C
RLNCF f,d Rotate left f (no carry) 1 0010 001d ffff ffff None
RRCF f,d Rotate right f through Carry 1 0001 100d ffff ffff C
RRNCF f,d Rotate right f (no carry) 1 0010 000d ffff ffff None
SETF f,s Set f 1 0010 101s ffff ffff None 3
SUBWF f,d Subtract WREG from f 1 0000 010d ffff ffff OV,C,DC,Z 1
SUBWFB f,d Subtract WREG from f with Borrow 1 0000 001d ffff ffff OV,C,DC,Z 1
SWAPF f,d Swap f 1 0001 110d ffff ffff None
TABLRD t,i,f Table Read 2 (3) 1010 10ti ffff ffff None 7
Legend: Refer to Table 15-1 for opcode field descriptions.
Note 1: 2’s Complement method.
2: Unsigned arithmetic.
3: If s = '1', only the file is affected: If s = '0', both the WREG register and the file are affected; If only the Working
register (WREG) is required to be affected, then f = WREG must be specified.
4: During an LCALL, the contents of PCLATH are loaded into the MSB of the PC and kkkk kkkk is loaded into
the LSB of the PC (PCL)
5: Multiple cycle instruction for EPROM programming when table pointer selects internal EPROM. The instruc-
tion is terminated by an interrupt event. When writing to external program memory, it is a two-cycle instruc-
tion.
6: Two-cycle instruction when condition is true, else single cycle instruction.
7: Two-cycle instruction except for TABLRD to PCL (program counter low byte) in which case it takes 3 cycles.
8: A “skip” means that instruction fetched during execution of current instruction is not executed, instead an
NOP is executed.
9: These instructions are not available on the PIC17C42.