PIC16C925SLASHCL datasheet(117/182 Pages) MICROCHIP

117 / 182 page

 2001 Microchip Technology Inc.

Preliminary

DS39544A-page 115

PIC16C925/926

13.1

Instruction Descriptions

ADDLW

Add Literal and W

Syntax:

[ label ] ADDLW

Operands:

≤ k ≤ 255

Operation:

(W) + k

→ (W)

Status Affected:

C, DC, Z

Encoding:

111x

kkkk

Description:

The contents of the W register are

added to the eight-bit literal ’k’ and

the result is placed in the W

Words:

Cycles:

Q Cycle Activity:

Decode

Read

literal ’k’

Process

data

Write to

Example:

ADDLW

0x15

Before Instruction:

0x10

After Instruction:

0x25

ADDWF

Add W and f

Syntax:

[ label ] ADDWF

f [,d]

Operands:

≤ f ≤ 127

∈ [0,1]

Operation:

(W) + (f)

→ (destination)

Status Affected:

C, DC, Z

Encoding:

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:

Cycles:

Q Cycle Activity:

Decode

Read

Process

data

Write to

destination

Example

ADDWF

FSR,

Before Instruction:

0x17

FSR

0xC2

After Instruction:

0xD9

FSR

0xC2

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