PIC16C9XX Datasheet, PDF (121/189 Pages) Microchip Technology – 8-Bit CMOS Microcontroller with LCD Driver

15.1 Instruction Descriptions
ADDLW
Add Literal and W
Syntax:
[label] ADDLW k
Operands:
0 ≤ k ≤ 255
Operation:
(W) + k → (W)
Status Affected: C, DC, Z
Encoding:
11 111x
kkkk
kkkk
Description:
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
Cycles:
1
Q Cycle Activity:
Q1
Q2 Q3
Q4
Decode Read Process Write to
literal 'k' data
W
Example:
ADDLW 0x15
Before Instruction
W = 0x10
After Instruction
W = 0x25
PIC16C9XX
ADDWF
Add W and f
Syntax:
[label] ADDWF f,d
Operands:
0 ≤ f ≤ 127
d ∈ [0,1]
Operation:
(W) + (f) → (destination)
Status Affected: C, DC, Z
Encoding:
00 0111 dfff ffff
Description:
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'.
Words:
1
Cycles:
1
Q Cycle Activity:
Q1
Q2 Q3
Q4
Decode
Read
register
'f'
Process Write to
data destination
Example
ADDWF FSR, ₀
Before Instruction
W = 0x17
FSR = 0xC2
After Instruction
W = 0xD9
FSR = 0xC2
© 1997 Microchip Technology Inc.
DS30444E - page 121