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PIC16C57C-04I/SO 参数 Datasheet PDF下载

PIC16C57C-04I/SO图片预览
型号: PIC16C57C-04I/SO
PDF下载: 下载PDF文件 查看货源
内容描述: 基于ROM的8位CMOS微控制器系列 [ROM-Based 8-Bit CMOS Microcontroller Series]
分类和应用: 微控制器和处理器外围集成电路光电二极管PC可编程只读存储器时钟
文件页数/大小: 84 页 / 641 K
品牌: MICROCHIP [ MICROCHIP ]
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PIC16CR54C  
COMF  
Complement f  
[ label ] COMF f,d  
0 f 31  
DECFSZ  
Syntax:  
Decrement f, Skip if 0  
[ label ] DECFSZ f,d  
0 f 31  
Syntax:  
Operands:  
Operands:  
d
[0,1]  
d
[0,1]  
Operation:  
(f) (dest)  
Operation:  
(f) – 1 d; skip if result = 0  
Status Affected:  
Encoding:  
Z
Status Affected: None  
0010  
01df  
ffff  
0010  
11df  
ffff  
Encoding:  
The contents of register 'f' are comple-  
mented. If 'd' is 0 the result is stored in  
the W register. If 'd' is 1 the result is  
stored back in register 'f'.  
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'.  
Description:  
Description:  
If the result is 0, the next instruction,  
which is already fetched, is discarded  
and an NOP is executed instead mak-  
ing it a two cycle instruction.  
Words:  
1
1
Cycles:  
Example:  
COMF  
REG1,0  
Words:  
1
Before Instruction  
REG1  
=
0x13  
0x13  
Cycles:  
Example:  
1(2)  
After Instruction  
HERE  
DECFSZ  
GOTO  
CONTINUE •  
CNT, 1  
LOOP  
REG1  
=
W
=
0xEC  
DECF  
Decrement f  
[ label ] DECF f,d  
0 f 31  
Before Instruction  
PC  
=
address (HERE)  
Syntax:  
After Instruction  
Operands:  
CNT  
if CNT  
PC  
if CNT  
PC  
=
=
=
=
CNT - 1;  
0,  
address (CONTINUE);  
0,  
d
[0,1]  
Operation:  
(f) – 1 (dest)  
Status Affected:  
Encoding:  
Z
address (HERE+1)  
0000  
11df  
ffff  
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'.  
Description:  
GOTO  
Unconditional Branch  
Syntax:  
[ label ] GOTO  
0 k 511  
k
Words:  
1
1
Operands:  
Cycles:  
Example:  
Operation:  
k PC<8:0>;  
STATUS<6:5> PC<10:9>  
DECF  
CNT,  
1
Before Instruction  
Status Affected: None  
CNT  
=
0x01  
0
101k  
kkkk  
kkkk  
Encoding:  
Z
=
GOTOis an unconditional branch. The  
9-bit immediate value is loaded into PC  
bits <8:0>. The upper bits of PC are  
loaded from STATUS<6:5>. GOTOis a  
two cycle instruction.  
Description:  
After Instruction  
CNT  
=
0x00  
1
Z
=
Words:  
1
Cycles:  
Example:  
2
GOTO THERE  
After Instruction  
PC  
=
address (THERE)  
DS40191A-page 42  
Preliminary  
1998 Microchip Technology Inc.  
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