HD64F38024HV Datasheet, PDF (328/684 Pages) Renesas Technology Corp – Hardware Manual Renesas 8-Bit Single-Chip Microcomputer H8 Family/H8/300L Super Low Power Series

Section 9 Timers
Bit 5—Bit 4 Write Disable (B4WI)
Bit 5 controls the writing of data to bit 4 in TCSRW.
Bit 5
B4WI
0
1
Description
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.
Bit 4
TCSRWE
0
1
Description
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 3
B2WI
0
1
Description
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.
(initial value)
(initial value)
(initial value)
Rev. 8.00 Mar. 09, 2010 Page 306 of 658
REJ09B0042-0800