PIC16LC925T-I/CL View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC16LC925T-I/CL

64/68-Pin CMOS Microcontrollers with LCD Driver

Microchip Technology 

PIC16C925/926

RETURN

Syntax:

Operands:

Operation:

Status Affected:

Encoding:

Description:

Words:

Cycles:

Q Cycle Activity:

1st Cycle

2nd Cycle

Return from Subroutine

[ label ] RETURN

None

TOS → PC

None

00

0000 0000

1000

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.

1

2

Q1

Q2

Q3

Q4

Decode

No

No Pop from

Operation Operation the Stack

No

No

No

No

Operation Operation Operation Operation

Example

RETURN

After Interrupt:

PC = TOS

RLF

Syntax:

Operands:

Operation:

Status Affected:

Encoding:

Description:

Rotate Left f through Carry

[ label ] RLF f [,d]

0 ≤ f ≤ 127

d ∈ [0,1]

See description below

C

00 1101 dfff ffff

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’.

C

Register f

Words:

Cycles:

Q Cycle Activity:

1

1

Q1 Q2 Q3

Q4

Decode

Read

register

’f’

Process Write to

data destination

Example

RLF

REG1,0

Before Instruction:

REG1 = 1110 0110

C

=0

After Instruction:

REG1 = 1110 0110

W

= 1100 1100

C

=1

 2001 Microchip Technology Inc.

Preliminary

DS39544A-page 127

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