HT9480 datasheet(44/57 Pages) HOLTEK

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CLR WDT1

Preclear Watchdog timer

Description

The PD, TO flags, WDT and the WDT Prescaler are cleared (re-counting from

zero), if the other preclear WDT instruction had been executed. Only execu-

tion of this instruction without the other preclear instruction sets the indi-

cating flag which implies this instruction was executed. The PD and TO flags

remain unchanged.

Operation

WDT and WDT Prescaler

← 00H*

PD and TO

← 0*

Affected flag(s)

TC2

TC1

–

––

CLR WDT2

Preclear Watchdog timer

Description

The PD, TO flags, WDT and the WDT Prescaler are cleared (re-counting from

zero), if the other preclear WDT instruction had been executed. Only execu-

tion of this instruction without the other preclear instruction, sets the

indicating flag which implies this instruction was executed. The PD and TO

flags remain unchanged.

Operation

WDT and WDT Prescaler

← 00H*

PD and TO

← 0*

Affected flag(s)

TC2

TC1

–

––

CPL [m]

Complement data memory

Description

Each bit of the specified data memory is logically complemented (1’s comple-

ment). Bits which previously contain a one are changed to zero and vice-

versa.

Operation

[m]

← [m]

Affected flag(s)

TC2

TC1

––

–

√

––

HT9480

23th Feb ’98

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