PIC16F627A Datasheet, PDF (120/168 Pages) Microchip Technology – FLASH-Based 8-Bit CMOS Microcontrollers

PIC16F627A/628A/648A
INCF
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example
Increment f
[ label ] INCF f,d
0 ≤ f ≤ 127
d ∈ [0,1]
(f) + 1 → (dest)
Z
00
1010 dfff ffff
The contents of register 'f' are
incremented. If 'd' is 0 the result
is placed in the W register. If 'd'
is 1 the result is placed back in
register 'f'.
1
1
INCF REG1, 1
Before Instruction
REG1 = 0xFF
Z =0
After Instruction
REG1 = 0x00
Z =1
INCFSZ
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example
Increment f, Skip if 0
[ label ] INCFSZ f,d
0 ≤ f ≤ 127
d ∈ [0,1]
(f) + 1 → (dest), skip if result = 0
None
00
1111 dfff ffff
The contents of register 'f' are
incremented. If 'd' is 0 the result
is placed in the W register. If 'd'
is 1 the result is placed back in
register 'f'.
If the result is 0, the next instruc-
tion, which is already fetched, is
discarded. A NOP is executed
instead making it a two-cycle
instruction.
1
1(2)
HERE
INCFSZ
GOTO
CONTINUE •
•
•
REG1, 1
LOOP
Before Instruction
PC = address HERE
After Instruction
REG1 = REG1 + 1
if CNT = 0,
PC = address CONTINUE
if REG1≠ 0,
PC = address HERE +1
DS40044A-page 118
Preliminary
 2002 Microchip Technology Inc.