HD6433635SW datasheet(223/418 Pages) RENESAS

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Bit 4—Timer Control/Status Register W Write Enable (TCSRWE): Bit 4 controls writing

of data to bits 2 and 0 of TCSRW.

Bit 4: TCSRWE

Description

Writing of data to bits 2 and 0 is disabled

(initial value)

Writing of data to bits 2 and 0 is enabled

Bit 3—Bit 2 Write Inhibit (B2WI): Bit 3 controls writing of data to bit 2 of TCSRW.

This bit is always read as 1. Data is not stored if written to this bit.

Bit 3: B2WI

Description

Writing to bit 2 is enabled

Writing to bit 2 is disabled

(initial value)

Bit 2—Watchdog Timer On (WDON): Bit 2 control watchdog timer operation.

The count-up starts when this bit is set to 1, and stops when it is cleared to 0.

Bit 2: WDON

Description

Watchdog timer operation disabled

(initial value)

[Clearing condition]

In a reset, or when 0 is written to WDON while writing 0 to B2WI when

TCSRWE is set to 1

Watchdog timer operation enabled

[Setting condition]

When 1 is written to WDON while writing 0 to B2WI when TCSRWE is set to

Bit 1—Bit 0 Write Inhibit (B0WI): Bit 1 controls writing of data to bit 0 of timer

control/status register W.

This bit is always read as 1. Data is not stored if written to this bit.

Bit 1: B0WI

Description

Writing to bit 0 is enabled

Writing to bit 0 is disabled

(initial value)

HD6433635SW Datasheet(PDF) 223 Page - Renesas Technology Corp