PIC16C505T-20I/SL View Datasheet(PDF) - Microchip Technology
Part Name
Description
Manufacturer
PIC16C505T-20I/SL Datasheet PDF : 85 Pages
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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 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
PIC16C505
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
© 1999 Microchip Technology Inc.
DS40192C-page 49
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