PIC16LC554 datasheet(53/96 Pages) MICROCHIP

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Preliminary

DS40143B-page 53

PIC16C55X(A)

8.1

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 register

Words:

Cycles:

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)

→ (dest)

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:

Example

ADDWF

FSR,

Before Instruction

0x17

FSR =

0xC2

After Instruction

0xD9

FSR =

0xC2

ANDLW

AND Literal with W

Syntax:

[

label ] ANDLW

Operands:

≤ k ≤ 255

Operation:

(W) .AND. (k)

→ (W)

Status Affected:

Encoding:

1001

kkkk

Description:

The contents of W register are

AND’ed with the eight bit literal 'k'. The

result is placed in the W register

Words:

Cycles:

Example

ANDLW

0x5F

Before Instruction

0xA3

After Instruction

0x03

ANDWF

AND W with f

Syntax:

[

label ] ANDWF

f,d

Operands:

≤ f ≤ 127

∈ [0,1]

Operation:

(W) .AND. (f)

→ (dest)

Status Affected:

Encoding:

0101

dfff

ffff

Description:

AND the W register with register 'f'. If

'd' is 0 the result is stored in the W

back in register 'f'

Words:

Cycles:

Example

ANDWF

FSR,

Before Instruction

0x17

FSR =

0xC2

After Instruction

0x17

FSR =

0x02

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