Renesas H8 Series Hardware Manual page 346

8-bit single-chip microcomputer

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Table of Contents

Section 9 Timers

Bit 5—Bit 4 Write Disable (B4WI)

Bit 5 controls the writing of data to bit 4 in TCSRW.

Bit 4 is write-enabled

Bit 4 is write-protected

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

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

Bit 4 controls the writing of data to bits 2 and 0 in TCSRW.

Data cannot be written to bits 2 and 0

Data can be written to bits 2 and 0

Bit 3—Bit 2 Write Inhibit (B2WI)

Bit 3 controls the writing of data to bit 2 in TCSRW.

Bit 2 is write-enabled

Bit 2 is write-protected

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

Bit 2—Watchdog Timer On (WDON)

Bit 2 enables watchdog timer operation.

Rev. 7.00 Mar 10, 2005 page 304 of 652

REJ09B0042-0700

(initial value)