PIC16LC622T-20/SS View Datasheet(PDF) - Microchip Technology
Part Name
Description
Manufacturer
PIC16LC622T-20/SS Datasheet PDF : 128 Pages
| |||
PIC16C62X
SUBLW
Syntax:
Operands:
Operation:
Status
Affected:
Encoding:
Description:
Words:
Cycles:
Example 1:
Example 2:
Example 3:
Subtract W from Literal
[ label ] SUBLW k
0 ≤ k ≤ 255
k - (W) → (W)
C, DC, Z
11 110x kkkk kkkk
The W register is subtracted (2’s
complement method) from the eight
bit literal 'k'. The result is placed in
the W register.
1
1
SUBLW 0x02
Before Instruction
W= 1
C= ?
After Instruction
W= 1
C = 1; result is positive
Before Instruction
W= 2
C= ?
After Instruction
W= 0
C = 1; result is zero
Before Instruction
W= 3
C= ?
After Instruction
W = 0xFF
C = 0; result is negative
SUBWF
Syntax:
Operands:
Operation:
Status
Affected:
Encoding:
Description:
Words:
Cycles:
Example 1:
Example 2:
Example 3:
Subtract W from f
[ label ] SUBWF f,d
0 ≤ f ≤ 127
d ∈ [0,1]
(f) - (W) → (dest)
C, DC, Z
00 0010 dfff ffff
Subtract (2’s complement method)
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'.
1
1
SUBWF REG1,1
Before Instruction
REG1= 3
W= 2
C= ?
After Instruction
REG1= 1
W= 2
C = 1; result is positive
Before Instruction
REG1= 2
W= 2
C= ?
After Instruction
REG1= 0
W= 2
C = 1; result is zero
Before Instruction
REG1= 1
W= 2
C= ?
After Instruction
REG1= 0xFF
W= 2
C = 0; result is negative
DS30235J-page 72
2003 Microchip Technology Inc.
Share Link: 