User manual

12. Watchdog Timer
101
Watchdog Timer Clear Register
The Watchdog Timer Clear register is programmed with a lockout sequence to enable
watchdog timer mode and to reload the counter. The lockout sequence is shown below.
• Word write of F01Eh to F4C8h
• Word write of 0FE1h to F4C8h
7 6543 210
Word Write Sequence
1. F01Eh
2. 0FE1h
-----
---
15 14 13 12 11 10 9 8
Register: Watchdog Clear
Address: F4C8h
Access: Write Only
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Watchdog Timer Clear Register
Watchdog Timer Status Register
The Watchdog Timer Status register contains a status bit that is automatically set after a
lockout sequence to indicate that the watchdog timer is active. The status bit is cleared
until the next reset or power cycle.
Register:
Access:
Address:
765432
10
-----
WDT Status
F4CAh
Read
Watchdog State
0= Disable
1= Enable
WEN 0 0
Watchdog Timer Status Register