PIC16CR74ESLASHP datasheet(113/172 Pages) MICROCHIP

113 / 172 page

DS21993C-page 111

PIC16CR7X

RLF

Rotate Left f through Carry

Syntax:

[ label ] RLF

f,d

Operands:

≤ f ≤ 127

∈ [0,1]

Operation:

See description below

Status Affected:

Description:

The contents of register ‘f’ are rotated

one bit to the left through the Carry

Flag. If ‘d’ is ‘0’, the result is placed in

the W register. If ‘d’ is ‘1’, the result is

stored back in register ‘f’.

RETURN

Return from Subroutine

Syntax:

[ label ]

RETURN

Operands:

None

Operation:

TOS

→ PC

Status Affected:

None

Description:

Return from subroutine. The stack

is POPed and the top of the stack

(TOS) is loaded into the program

counter. This is a two-cycle

instruction.

RRF

Rotate Right f through Carry

Syntax:

[ label ]

RRF f,d

Operands:

≤ f ≤ 127

∈ [0,1]

Operation:

See description below

Status Affected:

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’.

PIC16CR74E/P Datasheet(PDF) 113 Page - Microchip Technology

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