PIC16F84A datasheet(156/337 Pages) MICROCHIP

156 / 337 page

PIC16C6X

DS30234D-page 156

SLEEP

Syntax:

[

label ]

SLEEP

Operands:

None

Operation:

00h

→ WDT,

→ WDT prescaler,

→ TO,

→ PD

Status Affected:

TO, PD

Encoding:

0000

0110

0011

Description:

The power-down status bit, PD is

cleared. Time-out status bit, TO is

set. Watchdog Timer and its pres-

caler are cleared.

The processor is put into SLEEP

mode with the oscillator stopped. See

Section 13.8 for more details.

Words:

Cycles:

Q Cycle Activity:

Decode

No-

Operation

No-

Operation

Go to

Sleep

Example:

SLEEP

SUBLW

Subtract W from Literal

Syntax:

[

label ]

SUBLW k

Operands:

≤ k ≤ 255

Operation:

k - (W)

→ (W)

Status Affected:

C, DC, Z

Encoding:

110x

kkkk

Description:

The W register is subtracted (2’s comple-

ment method) from the eight bit literal 'k'.

The result is placed in the W register.

Words:

Cycles:

Q Cycle Activity:

Decode

Read

literal 'k'

Process

data

Write to W

Example 1:

SUBLW

0x02

Before Instruction

After Instruction

1; result is positive

Example 2:

Before Instruction

After Instruction

1; result is zero

Example 3:

Before Instruction

After Instruction

0xFF

0; result is negative

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