PIC16C765SLASHP datasheet(115/158 Pages) MICROCHIP

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Advanced Information

DS41124A-page 115

PIC16C745/765

RETFIE

Return from Interrupt

Syntax:

[

label ]

RETFIE

Operands:

None

Operation:

TOS

→ PC,

→ GIE

Status Affected:

None

RETLW

Return with Literal in W

Syntax:

[

label ]

RETLW k

Operands:

≤ k ≤ 255

Operation:

→ (W);

TOS

→ PC

Status Affected:

None

Description:

The W register is loaded with the

eight bit literal ’k’. The program

counter is loaded from the top of

the stack (the return address).

This is a two cycle instruction.

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.

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’.

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 reg-

ister ’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.

See Section 13.9 for more

details.

PIC16C765/P Datasheet(PDF) 115 Page - Microchip Technology

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