參數(shù)資料
型號(hào): PIC16C56A-20I/JW
元件分類: 微控制器/微處理器
英文描述: 8-BIT, UVPROM, 20 MHz, RISC MICROCONTROLLER, CDIP18
封裝: 0.300 INCH, WINDOWED, CERDIP-18
文件頁數(shù): 107/158頁
文件大?。?/td> 1194K
代理商: PIC16C56A-20I/JW
PIC16C5X
DS30453C-page 52
Preliminary
2000 Microchip Technology Inc.
SLEEP
Enter SLEEP Mode
Syntax:
[label]
SLEEP
Operands:
None
Operation:
00h
→ WDT;
0
→ WDT prescaler;
1
→ TO;
0
→ PD
Status Affected:
TO, PD
Encoding:
0000
0011
Description:
Time-out status bit (TO) is set. The
power-down status bit (PD) is cleared.
The WDT and its prescaler are
cleared.
The processor is put into SLEEP mode
with the oscillator stopped. See sec-
tion on SLEEP for more details.
Words:
1
Cycles:
1
Example:
SLEEP
SUBWF
Subtract W from f
Syntax:
[label]
SUBWF f,d
Operands:
0
≤ f ≤ 31
d
∈ [0,1]
Operation:
(f) – (W)
→ (dest)
Status Affected:
C, DC, Z
Encoding:
0000
10df
ffff
Description:
Subtract (2’s complement method) the
W register from 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
Example 1:
SUBWF
REG1, 1
Before Instruction
REG1
=
3
W=
2
C=
?
After Instruction
REG1
=
1
W=
2
C
=
1
; result is positive
Example 2:
Before Instruction
REG1
=
2
W=
2
C=
?
After Instruction
REG1
=
0
W=
2
C
=
1
; result is zero
Example 3:
Before Instruction
REG1
=
1
W=
2
C=
?
After Instruction
REG1
=
FF
W=
2
C
=
0
; result is negative
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