Datasheet

 1997 Microchip Technology Inc. DS30444E - page 121
PIC16C9XX
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
literal 'k'
Process
data
Write to
W
Example:
ADDLW 0x15
Before Instruction
W = 0x10
After Instruction
W = 0x25
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
data
Write to
destination
Example
ADDWF FSR,
0
Before Instruction
W = 0x17
FSR = 0xC2
After Instruction
W = 0xD9
FSR = 0xC2