參數(shù)資料
型號: PIC16C505-20/P
元件分類: 微控制器/微處理器
英文描述: 8-BIT, OTPROM, 20 MHz, RISC MICROCONTROLLER, PDIP14
封裝: 0.300 INCH, PLASTIC, DIP-14
文件頁數(shù): 44/85頁
文件大?。?/td> 1205K
代理商: PIC16C505-20/P
1999 Microchip Technology Inc.
DS40192C-page 49
PIC16C505
SLEEP
Enter SLEEP Mode
Syntax:
[
label]
SLEEP
Operands:
None
Operation:
00h
→ WDT;
0
→ WDT prescaler;
1
→ TO;
0
→ PD
Status Affected:
TO, PD, RBWUF
Encoding:
0000
0011
Description:
Time-out status bit (TO) is set. The
power down status bit (PD) is
cleared.
RBWUF is unaffected.
The WDT and its prescaler are
cleared.
The processor is put into SLEEP
mode with the oscillator stopped.
See section 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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