Electronic Components Datasheet Search
  New Zealand  ▼
ALLDATASHEET.CO.NZ

X  

Preview PDF HTML

PIC18F23K20-E/ML Datasheet(PDF) 344 Page - Microchip Technology

Part # PIC18F23K20-E/ML
Description  28/40/44-Pin Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology
PDF  420 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

PIC18F23K20-E/ML Datasheet(HTML) 344 Page - Microchip Technology

Back Button PIC18F23K20-E/ML Datasheet HTML 340Page - Microchip Technology PIC18F23K20-E/ML Datasheet HTML 341Page - Microchip Technology PIC18F23K20-E/ML Datasheet HTML 342Page - Microchip Technology PIC18F23K20-E/ML Datasheet HTML 343Page - Microchip Technology PIC18F23K20-E/ML Datasheet HTML 344Page - Microchip Technology PIC18F23K20-E/ML Datasheet HTML 345Page - Microchip Technology PIC18F23K20-E/ML Datasheet HTML 346Page - Microchip Technology PIC18F23K20-E/ML Datasheet HTML 347Page - Microchip Technology PIC18F23K20-E/ML Datasheet HTML 348Page - Microchip Technology Next Button
Zoom Inzoom in Zoom Outzoom out
 344 / 420 page
background image
PIC18F2XK20/4XK20
DS41303B-page 342
Advance Information
© 2007 Microchip Technology Inc.
SUBWFB
Subtract W from f with Borrow
Syntax:
SUBWFB
f {,d {,a}}
Operands:
0
≤ f ≤ 255
d
∈ [0,1]
a
∈ [0,1]
Operation:
(f) – (W) – (C)
→ dest
Status Affected:
N, OV, C, DC, Z
Encoding:
0101
10da
ffff
ffff
Description:
Subtract W and the CARRY flag
(borrow) from register ‘f’ (2’s comple-
ment method). If ‘d’ is ‘0’, the result is
stored in W. If ‘d’ is ‘1’, the result is
stored back 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
≤ 95 (5Fh). See
Section 24.2.3 “Byte-Oriented and
Bit-Oriented Instructions in Indexed
Literal Offset Mode” for details.
Words:
1
Cycles:
1
Q Cycle Activity:
Q1
Q2
Q3
Q4
Decode
Read
register ‘f’
Process
Data
Write to
destination
Example 1:
SUBWFB
REG, 1, 0
Before Instruction
REG
=
19h
(0001 1001)
W
=0Dh
(0000 1101)
C=
1
After Instruction
REG
=
0Ch
(0000 1011)
W
=0Dh
(0000 1101)
C=
1
Z=
0
N
=
0
; result is positive
Example 2:
SUBWFB
REG, 0, 0
Before Instruction
REG
=
1Bh
(0001 1011)
W
=1Ah
(0001 1010)
C=
0
After Instruction
REG
=
1Bh
(0001 1011)
W
=
00h
C=
1
Z
=
1
; result is zero
N=
0
Example 3:
SUBWFB
REG, 1, 0
Before Instruction
REG
=
03h
(0000 0011)
W
=0Eh
(0000 1101)
C=
1
After Instruction
REG
=
F5h
(1111 0100)
; [2’s comp]
W
=0Eh
(0000 1101)
C=
0
Z=
0
N
=
1
; result is negative
SWAPF
Swap f
Syntax:
SWAPF f {,d {,a}}
Operands:
0
≤ f ≤ 255
d
∈ [0,1]
a
∈ [0,1]
Operation:
(f<3:0>)
→ dest<7:4>,
(f<7:4>)
→ dest<3:0>
Status Affected:
None
Encoding:
0011
10da
ffff
ffff
Description:
The upper and lower nibbles of register
‘f’ are exchanged. If ‘d’ is ‘0’, the result
is placed in W. If ‘d’ is ‘1’, the result is
placed 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
≤ 95 (5Fh). See
Section 24.2.3 “Byte-Oriented and
Bit-Oriented Instructions in Indexed
Literal Offset Mode” for details.
Words:
1
Cycles:
1
Q Cycle Activity:
Q1
Q2
Q3
Q4
Decode
Read
register ‘f’
Process
Data
Write to
destination
Example:
SWAPF
REG, 1, 0
Before Instruction
REG
=
53h
After Instruction
REG
=
35h



Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100  ...More


Datasheet Download

Go To PDF Page


Link URL



Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Link to Datasheet    |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com