PIC16F-ESLASHML datasheet(119/178 Pages) MICROCHIP

119 / 178 page

DS40044F-page 117

PIC16F627A/628A/648A

15.2

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

W = 0x10

After Instruction

W = 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

‘0’, the result is stored in the W

stored back in register ‘f’.

Words:

Cycles:

Example

ADDWF

REG1, 0

Before Instruction

W= 0x17

REG1 = 0xC2

After Instruction

W= 0xD9

REG1 = 0xC2

Z= 0

C= 0

= 0

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

Words:

Cycles:

Example

ANDLW

0x5F

Before Instruction

W= 0xA3

After Instruction

W = 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 register. If ‘d’ is ‘1’, the

result is stored back in register

‘f’.

Words:

Cycles:

Example

ANDWF

REG1, 1

Before Instruction

W= 0x17

REG1 = 0xC2

After Instruction

W= 0x17

REG1 = 0x02

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