参数资料
型号: PIC16C715-20E/SO
厂商: Microchip Technology
文件页数: 151/177页
文件大小: 0K
描述: IC MCU OTP 2KX14 A/D 18SOIC
产品培训模块: Asynchronous Stimulus
标准包装: 42
系列: PIC® 16C
核心处理器: PIC
芯体尺寸: 8-位
速度: 20MHz
外围设备: 欠压检测/复位,POR,WDT
输入/输出数: 13
程序存储器容量: 3.5KB(2K x 14)
程序存储器类型: OTP
RAM 容量: 128 x 8
电压 - 电源 (Vcc/Vdd): 4 V ~ 5.5 V
数据转换器: A/D 4x8b
振荡器型: 外部
工作温度: -40°C ~ 125°C
封装/外壳: 18-SOIC(0.295",7.50mm 宽)
包装: 管件
1997 Microchip Technology Inc.
DS30272A-page 75
PIC16C71X
COMF
Complement f
Syntax:
[
label ] COMF
f,d
Operands:
0
≤ f ≤ 127
d
∈ [0,1]
Operation:
(f)
→ (dest)
Status Affected:
Z
Encoding:
00
1001
dfff
ffff
Description:
The contents of register 'f' are comple-
mented. If 'd' is 0 the result is stored in
W. If 'd' is 1 the result is stored back in
register 'f'.
Words:
1
Cycles:
1
Q Cycle Activity:
Q1
Q2
Q3
Q4
Decode
Read
register
'f'
Process
data
Write to
dest
Example
COMF
REG1,0
Before Instruction
REG1
=
0x13
After Instruction
REG1
=
0x13
W
=
0xEC
DECF
Decrement f
Syntax:
[
label] DECF f,d
Operands:
0
≤ f ≤ 127
d
∈ [0,1]
Operation:
(f) - 1
→ (dest)
Status Affected:
Z
Encoding:
00
0011
dfff
ffff
Description:
Decrement register 'f'. If 'd' is 0 the
result is stored in the W register. If 'd'
is 1 the result is stored back in register
'f'
.
Words:
1
Cycles:
1
Q Cycle Activity:
Q1
Q2
Q3
Q4
Decode
Read
register
'f'
Process
data
Write to
dest
Example
DECF
CNT, 1
Before Instruction
CNT
=
0x01
Z
=
0
After Instruction
CNT
=
0x00
Z
=
1
DECFSZ
Decrement f, Skip if 0
Syntax:
[
label ] DECFSZ f,d
Operands:
0
≤ f ≤ 127
d
∈ [0,1]
Operation:
(f) - 1
→ (dest);
skip if result = 0
Status Affected:
None
Encoding:
00
1011
dfff
ffff
Description:
The contents of register 'f' are decre-
mented. 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 1, the next instruction, is
executed. If the result is 0, then a NOP is
executed instead making it a 2TCY
instruction.
Words:
1
Cycles:
1(2)
Q Cycle Activity:
Q1
Q2
Q3
Q4
Decode
Read
register
'f'
Process
data
Write to
dest
If Skip:
(2nd Cycle)
Q1
Q2
Q3
Q4
NOP
Example
HERE
DECFSZ
CNT, 1
GOTO
LOOP
CONTINUE
Before Instruction
PC
=
address HERE
After Instruction
CNT
=
CNT - 1
if CNT =
0,
PC
=
address CONTINUE
if CNT
0,
PC
=
address HERE+1
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