PIC18F2480 MICROCHIP [Microchip Technology], PIC18F2480 Datasheet - Page 398
PIC18F2480
Manufacturer Part Number
PIC18F2480
Description
28/40/44-Pin Enhanced Flash Microcontrollers with ECAN Technology, 10-Bit A/D and nanoWatt Technology
Manufacturer
MICROCHIP [Microchip Technology]
Datasheet
1.PIC18F2480.pdf
(484 pages)
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PIC18F2480/2580/4480/4580
SLEEP
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example:
† If WDT causes wake-up, this bit is cleared.
DS39637A-page 396
Q Cycle Activity:
Before Instruction
After Instruction
Decode
TO =
PD =
TO =
PD =
Q1
?
?
1 †
0
operation
Enter Sleep mode
None
00h
0
1
0
TO, PD
The Power-Down status bit (PD) is
cleared. The Time-out status bit (TO)
is set. Watchdog Timer and its
postscaler are cleared.
The processor is put into Sleep mode
with the oscillator stopped.
1
1
SLEEP
SLEEP
No
Q2
0000
WDT postscaler,
TO,
PD
WDT,
0000
Process
Data
Q3
0000
Go to
Sleep
Q4
0011
Preliminary
SUBFWB
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example 1:
Example 2:
Example 3:
Q Cycle Activity:
Before Instruction
After Instruction
Before Instruction
After Instruction
Before Instruction
After Instruction
Decode
REG
W
C
REG
W
C
Z
N
REG
W
C
REG
W
C
Z
N
REG
W
C
REG
W
C
Z
N
Q1
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
register ‘f’
(W) – (f) – (C)
Subtract register ‘f’ and Carry flag
1
Subtract f from W with Borrow
0
d
a
N, OV, C, DC, Z
(borrow) from W (2’s complement
method). If ‘d’ is ‘0’, the result is stored
in W. If ‘d’ is ‘1’, the result is stored in
register ‘f’ (default).
If ‘a’ is ‘0’, the Access Bank is selected.
If ‘a’ is ‘1’, the BSR is used to select the
GPR bank (default).
If ‘a’ is ‘0’ and the extended instruction
set is enabled, this instruction operates
in Indexed Literal Offset Addressing
mode whenever f
Section 25.2.3 “Byte-Oriented and
Bit-Oriented Instructions in Indexed
Literal Offset Mode” for details.
1
SUBFWB
SUBFWB
SUBFWB
Read
SUBFWB
Q2
0101
3
2
1
FF
2
0
0
1
2
5
1
2
3
1
0
0
1
2
0
0
2
1
1
0
f
2004 Microchip Technology Inc.
[0,1]
[0,1]
255
; result is negative
; result is positive
; result is zero
01da
REG, 1, 0
REG, 0, 0
REG, 1, 0
f {,d {,a}}
Process
Data
Q3
dest
95 (5Fh). See
ffff
destination
Write to
Q4
ffff
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