PIC18LF1320-I/SOSQTP View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC18LF1320-I/SOSQTP

18/20/28-Pin High-Performance, Enhanced Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology

Microchip Technology 

PIC18F1220/1320

CLRF

Clear f

Syntax:

Operands:

Operation:

Status Affected:

Encoding:

Description:

Words:

[ label ] CLRF f [,a]

0 ≤ f ≤ 255

a ∈ [0,1]

000h → f

1→Z

Z

0110 101a ffff ffff

Clears the contents of the specified

register. If ‘a’ is ‘0’, the Access

Bank will be selected, overriding

the BSR value. If ‘a’ = 1, then the

bank will be selected as per the

BSR value (default).

1

Cycles:

1

Q Cycle Activity:

Q1

Q2

Decode

Read

register ‘f’

Q3

Process

Data

Q4

Write

register ‘f’

Example:

CLRF

Before Instruction

FLAG_REG =

After Instruction

FLAG_REG =

FLAG_REG

0x5A

0x00

CLRWDT

Clear Watchdog Timer

Syntax:

Operands:

Operation:

Status Affected:

Encoding:

Description:

Words:

Cycles:

[ label ] CLRWDT

None

000h → WDT,

000h → WDT postscaler,

1 → TO,

1 → PD

TO, PD

0000 0000 0000 0100

CLRWDT instruction resets the

Watchdog Timer. It also resets the

postscaler of the WDT. Status bits,

TO and PD, are set.

1

1

Q Cycle Activity:

Q1

Q2

Decode

No

operation

Q3

Process

Data

Q4

No

operation

Example:

CLRWDT

Before Instruction

WDT Counter

=

After Instruction

WDT Counter

=

WDT Postscaler =

TO

=

PD

=

?

0x00

0

1

1

© 2007 Microchip Technology Inc.

DS39605F-page 207

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