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Section 9 Timers
Rev. 6.00 Sep 12, 2006 page 272 of 526
REJ09B0326-0600
Bit 5
Bit 4 Write Inhibit (B4WI):
Bit 5 controls the writing of data to bit 4 in TCSRW.
This bit is always read as 1. Data written to this bit is not stored.
Bit 5: B4WI
Description
0
Bit 4 is write-enabled
1
Bit 4 is write-protected
(initial value)
Bit 4
Timer Control/Status Register W Write Enable (TCSRWE):
Bit 4 controls the writing
of data to TCSRW bits 2 and 0.
Bit 4: TCSRWE
Description
0
Data cannot be written to bits 2 and 0
(initial value)
1
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.
This bit is always read as 1. Data written to this bit is not stored.
Bit 3: B2WI
Description
0
Bit 2 is write-enabled
1
Bit 2 is write-protected
(initial value)
Bit 2
Watchdog Timer On (WDON):
Bit 2 enables watchdog timer operation.
Counting starts when this bit is set to 1, and stops when this bit is cleared to 0.
Bit 2: WDON
Description
0
Watchdog timer operation is disabled
(initial value)
Clearing condition:
Reset, or when TCSRWE = 1 and 0 is written in both B2WI and WDON
1
Watchdog timer operation is enabled
Setting condition:
When TCSRWE = 1 and 0 is written in B2WI and 1 is written in WDON
Summary of Contents for F-ZTAT H8/3642A Series
Page 6: ...Rev 6 00 Sep 12 2006 page iv of xx ...
Page 8: ...Rev 6 00 Sep 12 2006 page vi of xx ...
Page 22: ...Rev 6 00 Sep 12 2006 page xx of xx ...
Page 124: ...Section 5 Power Down Modes Rev 6 00 Sep 12 2006 page 102 of 526 REJ09B0326 0600 ...
Page 188: ...Section 6 ROM Rev 6 00 Sep 12 2006 page 166 of 526 REJ09B0326 0600 ...
Page 190: ...Section 7 RAM Rev 6 00 Sep 12 2006 page 168 of 526 REJ09B0326 0600 ...
Page 298: ...Section 9 Timers Rev 6 00 Sep 12 2006 page 276 of 526 REJ09B0326 0600 ...
Page 378: ...Section 12 A D Converter Rev 6 00 Sep 12 2006 page 356 of 526 REJ09B0326 0600 ...
Page 446: ...Section 13 Electrical Characteristics Rev 6 00 Sep 12 2006 page 424 of 526 REJ09B0326 0600 ...