PIC12F635ESLASHSS datasheet(140/196 Pages) MICROCHIP

140 / 196 page

PIC12F635/PIC16F636/639

DS41232B-page 138

Preliminary

RRF

Rotate Right f through Carry

Syntax:

[ label ]

RRF f,d

Operands:

≤ f ≤ 127

∈ [0,1]

Operation:

See description below

Status Affected: C

Description:

The contents of register ‘f’ are rotated

one bit to the right through the

CARRY flag. If ‘d’ is ‘0’, the result is

placed in the W register. If ‘d’ is ‘1’,

the result is placed back in register ‘f’.

SLEEP

Syntax:

[ label ] SLEEP

Operands:

None

Operation:

00h

→ WDT,

→ WDT prescaler,

→ TO,

→ PD

Status Affected:

TO, PD

Description:

The Power-down Status bit, PD,

is cleared. Time-out Status bit,

TO, is set. Watchdog Timer and

its prescaler are cleared.

The processor is put into Sleep

mode with the oscillator stopped.

SUBLW

Subtract W from Literal

Syntax:

[ label ] SUBLW k

Operands:

≤ k ≤ 255

Operation:

k - (W)

→ (W)

Status Affected: C, DC, Z

Description:

The W register is subtracted (2’s

complement method) from the

eight-bit literal ‘k’. The result is

placed in the W register.

SUBWF

Subtract W from f

Syntax:

[ label ] SUBWF f,d

Operands:

≤ f ≤ 127

∈ [0,1]

Operation:

(f) - (W)

→ (destination)

Status Affected: C, DC, Z

Description:

Subtract (2’s complement method)

W register from register ‘f’. If ‘d’ is

‘0’, the result is stored in the W

stored back in register ‘f’.

SWAPF

Swap Nibbles in f

Syntax:

[ label ] SWAPF f,d

Operands:

≤ f ≤ 127

∈ [0,1]

Operation:

(f<3:0>)

→ (destination<7:4>),

(f<7:4>)

→ (destination<3:0>)

Status Affected:

None

Description:

The upper and lower nibbles of

‘0’, the result is placed in the W

placed in register ‘f’.

XORLW

Exclusive OR Literal with W

Syntax:

[label]

XORLW k

Operands:

≤ k ≤ 255

Operation:

(W) .XOR. k

→ (W)

Status Affected:

Description:

The contents of the W register

are XOR’ed with the eight-bit

literal ‘k’. The result is placed in

the W register.

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