PIC16C71X
9.1
Instruction Descriptions
Add Literal and W
ANDLW
AND Literal with W
ADDLW
Syntax:
[label] ANDLW
k
Syntax:
[label] ADDLW
0 ≤ k ≤ 255
k
Operands:
Operation:
Status Affected:
Encoding:
Description:
0 ≤ k ≤ 255
Operands:
Operation:
Status Affected:
Encoding:
Description:
(W) .AND. (k) → (W)
(W) + k → (W)
C, DC, Z
Z
11
1001
kkkk
kkkk
11
111x
kkkk
kkkk
The contents of W register are
AND’ed with the eight bit literal 'k'.The
result is placed in the W register.
The contents of the W register are
added to the eight bit literal 'k' and the
result is placed in the W register.
Words:
1
1
Words:
1
1
Cycles:
Cycles:
Q Cycle Activity:
Q1
Q2
Q3
Q4
Q Cycle Activity:
Q1
Q2
Q3
Q4
Decode
Read
literal "k"
Process
data
Write to
W
Decode
Read
literal 'k'
Process
data
Write to
W
ANDLW
0x5F
ADDLW
0x15
Example
Example:
Before Instruction
Before Instruction
W
=
0xA3
0x03
W
=
0x10
0x25
After Instruction
After Instruction
W
=
W
=
ADDWF
Syntax:
Add W and f
ANDWF
Syntax:
AND W with f
[label] ADDWF f,d
[label] ANDWF f,d
Operands:
0 ≤ f ≤ 127
Operands:
0 ≤ f ≤ 127
d
[0,1]
d
[0,1]
Operation:
(W) + (f) → (dest)
Operation:
(W) .AND. (f) → (dest)
Status Affected:
Encoding:
C, DC, Z
Status Affected:
Encoding:
Z
00
0111
dfff
ffff
00
0101
dfff
ffff
Add the contents of the W register
with 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'.
AND the W register with 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'.
Description:
Description:
Words:
1
1
Words:
1
1
Cycles:
Cycles:
Q Cycle Activity:
Q1
Q2
Q3
Q4
Q Cycle Activity:
Q1
Q2
Q3
Q4
Decode
Read
register
'f'
Process
data
Write to
Dest
Decode
Read
register
'f'
Process
data
Write to
Dest
ADDWF
FSR,
0
ANDWF
FSR, 1
Example
Example
Before Instruction
Before Instruction
W
FSR =
=
0x17
0xC2
W
FSR =
=
0x17
0xC2
After Instruction
After Instruction
W
FSR =
=
0xD9
0xC2
W
FSR =
=
0x17
0x02
1997 Microchip Technology Inc.
DS30272A-page 71
MICROCHIP [ MICROCHIP ]
