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Section 9 Timers
Rev. 6.00 Sep 12, 2006 page 271 of 526
REJ09B0326-0600
Register Configuration
Table 9.20 shows the register configuration of the watchdog timer.
Table 9.20
Watchdog Timer Registers
Name Abbr.
R/W
Initial
Value
Address
Timer control/status register W
TCSRW
R/W
H'AA
H'FFBE
Timer counter W
TCW
R/W
H'00
H'FFBF
9.6.2 Register
Descriptions
Timer Control/Status Register W (TCSRW)
Bit
7 6 5 4 3 2 1 0
B6WI TCWE B4WI
TCSRWE B2WI WDON B0WI WRST
Initial
value 1 0 1 0 1 0 1 0
Read/Write R
R/(W)
*
R R/(W)
*
R R/(W)
*
R R/(W)
*
Note:
*
Write is permitted only under certain conditions, which are given in the descriptions of
the individual bits.
TCSRW is an 8-bit read/write register that controls write access to TCW and TCSRW itself,
controls watchdog timer operations, and indicates operating status.
Bit 7
Bit 6 Write Inhibit (B6WI):
Bit 7 controls the writing of data to bit 6 in TCSRW.
This bit is always read as 1. Data written to this bit is not stored.
Bit 7: B6WI
Description
0
Bit 6 is write-enabled
1
Bit 6 is write-protected
(initial value)
Bit 6
Timer Counter W Write Enable (TCWE):
Bit 6 controls the writing of data to bit 8 to
TCW.
Bit 6: TCWE
Description
0
Data cannot be written to TCW
(initial value)
1
Data can be written to TCW
Содержание F-ZTAT H8/3642A Series
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Страница 21: ...Rev 6 00 Sep 12 2006 page xix of xx Appendix E Product Code Lineup 522 Appendix F Package Dimensions 524 ...
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Страница 124: ...Section 5 Power Down Modes Rev 6 00 Sep 12 2006 page 102 of 526 REJ09B0326 0600 ...
Страница 188: ...Section 6 ROM Rev 6 00 Sep 12 2006 page 166 of 526 REJ09B0326 0600 ...
Страница 190: ...Section 7 RAM Rev 6 00 Sep 12 2006 page 168 of 526 REJ09B0326 0600 ...
Страница 298: ...Section 9 Timers Rev 6 00 Sep 12 2006 page 276 of 526 REJ09B0326 0600 ...
Страница 378: ...Section 12 A D Converter Rev 6 00 Sep 12 2006 page 356 of 526 REJ09B0326 0600 ...
Страница 446: ...Section 13 Electrical Characteristics Rev 6 00 Sep 12 2006 page 424 of 526 REJ09B0326 0600 ...