PIC18F4580-I/P Microchip Technology Inc., PIC18F4580-I/P Datasheet - Page 319
![no-image](/images/manufacturer_photos/0/4/440/microchip_technology_inc__sml.jpg)
PIC18F4580-I/P
Manufacturer Part Number
PIC18F4580-I/P
Description
40 PIN, 32 KB FLASH, 1536 RAM, 36 I/O
Manufacturer
Microchip Technology Inc.
Datasheet
1.PIC18F4580-IP.pdf
(402 pages)
Specifications of PIC18F4580-I/P
A/d Inputs
11-Channel, 10-Bit
Comparators
2
Cpu Speed
10 MIPS
Eeprom Memory
256 Bytes
Input Output
36
Interface
CAN/I2C/SPI/USART
Memory Type
Flash
Number Of Bits
8
Package Type
40-pin PDIP
Programmable Memory
32K Bytes
Ram Size
1.5K Bytes
Speed
40 MHz
Timers
1-8 bit, 3-16 bit
Voltage, Range
2-5.5 V
Lead Free Status / Rohs Status
RoHS Compliant part
Electrostatic Device
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SUBLW
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example 1:
Example 2:
Example 3:
2004 Microchip Technology Inc.
Q Cycle Activity:
Before Instruction
After Instruction
Before Instruction
After Instruction
Before Instruction
After Instruction
Decode
W
C
W
C
Z
N
W
C
W
C
Z
N
W
C
W
C
Z
N
Q1
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
literal ‘k’
[ label ] SUBLW k
0
k – (W)
N, OV, C, DC, Z
W is subtracted from the eight-bit
literal ‘k’. The result is placed in W.
1
1
SUBLW
SUBLW
SUBLW
Subtract W from Literal
Read
Q2
0000
1
?
1
1
0
0
2
?
0
1
1
0
3
?
FF
0
0
1
k
255
; result is positive
; result is zero
; result is negative
; (2’s complement)
0x02
0x02
0x02
W
1000
Process
Data
Q3
kkkk
Write to W
Q4
kkkk
SUBWF
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’
Subtract W from f
[ label ] SUBWF
0
d
a
(f) – (W)
N, OV, C, DC, Z
Subtract W from register ‘f’ (2’s
complement 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
will be selected, overriding the BSR
value. If ‘a’ is ‘1’, then the bank will be
selected as per the BSR value
(default).
1
1
SUBWF REG
SUBWF REG, W
SUBWF REG
Read
Q2
0101
3
2
?
1
2
1
0
0
2
2
?
2
0
1
1
0
0x01
0x02
?
0xFFh ;(2’s complement)
0x02
0x00
0x00
0x01
f
[0,1]
[0,1]
PIC18FXX8
255
; result is negative
; result is positive
; result is zero
11da
dest
Process
Data
Q3
DS41159D-page 317
f [,d [,a]]
ffff
destination
Write to
Q4
ffff
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