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What the decoded address of the W83977 ?
The decoded address of the W83977 is 3F0h.
How to enter or exit the configuration mode ?
In order to enter the configuration mode, you must write the
87h
value
each.
In order to exit the configuration mode, you must write the
AAh
value
How to enable or disable the Watchdog Timer
?
In order to enable the Watchdog Timer, you must write the
01h
value
7.
In order to disable the Watchdog Timer, you must write the
00h
value
7
How to set time-out value ?
In order to set time-out value, you must write a value which
is between 01h and FFh
to the register F2 (
For example,
01h : Time-out occurs after 32 seconds (16 seconds for the
to the configuration port
to the configuration port
to the register 30 (
to the register 30 (
CRF2
3F1h
3F1h.
CR30
) of the Logic Device
CR30
) of the Logic Device
) of the Logic Device 8.
Appendix A Watchdog Timer
2 times
83
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