Description:

This instruction resets the Watchdog Timer. This instruction must be executed within a limited time given by the WD prescaler. See the Watchdog Timer hardware specification.

Operation:

(i)WD timer restart.

Syntax: Operands: Program Counter:

(i)WDR None PC ← PC + 1

16-bit Opcode:

1001

0101

1010

1000

Status Register and Boolean Formula:

I

T

H

S

V

N

Z

C

-

-

-

-

-

-

-

-

Example:

wdr ; Reset watchdog timer

Words: 1 (2 bytes)

Cycles: 1