PIC16CE624T-04SS View Datasheet(PDF) - Microchip Technology
Part Name
Description
Manufacturer
PIC16CE624T-04SS Datasheet PDF : 113 Pages
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PIC16CE62X
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 com-
plement 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=
C=
tive
0xFF
0; result is nega-
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
W
C
=3
=2
=?
After Instruction
REG1
W
C
=1
=2
= 1; result is positive
Before Instruction
REG1
W
C
=2
=2
=?
After Instruction
REG1
W
C
=0
=2
= 1; result is zero
Before Instruction
REG1
W
C
=1
=2
=?
After Instruction
REG1
W
C
= 0xFF
=2
= 0; result is negative
© 1999 Microchip Technology Inc.
DS40182C-page 75
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