PIC16F716 Microchip Technology, PIC16F716 Datasheet - Page 79

• Manufacturer Part Number: PIC16F716
• Description: 8-bit Flash-based Microcontroller with A/D Converter and Enhanced Capture/Compare/PWM
• Manufacturer: Microchip Technology

DECFSZ
 2003 Microchip Technology Inc.
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example
Decrement f, Skip if 0
[ label ] DECFSZ f,d
0
d
(f) - 1
0
None
00
The contents of register ‘f’ are
decremented. 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
instruction, which is already
fetched, is discarded. A NOP is
executed instead making it a
two-cycle instruction.
1
1(2)
HERE
CONTINUE •
Before Instruction
After Instruction
f
[0,1]
PC
REG1
if REG1 = 0,
PC
if REG1
PC
127
(dest);
1011
DECFSZ
= address CONTINUE
GOTO
•
•
=
= REG1 - 1
= address HERE+1
address
0,
dfff
skip if result =
REG1, 1
LOOP
HERE
ffff
Preliminary
GOTO
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example
Unconditional Branch
[ label ]
0
k
PCLATH<4:3>
None
10
GOTO is an unconditional
branch. The eleven-bit
immediate value is loaded into
PC bits <10:0>. The upper bits
of PC are loaded from
PCLATH<4:3>. GOTO is a
two-cycle instruction.
1
2
GOTO THERE
After Instruction
k
PC = Address THERE
PC<10:0>
PIC16F716
2047
1kkk
GOTO k
DS41206A-page 77
kkkk
PC<12:11>
kkkk