13. Watchdog Timer
PCI 762 – User’s Guide (Version 1.1)
WDT counting
re-set timer
:O 2E F6
O 2F M ; M=00,01,02,…FF(See below table)
↓
IF No re-set timer
: WDT time-out, generate RESET
IF to disable WDT
: O 2E 30
O 2F 00; Can be disable at any time
N=00
M= 00h: Time-out Disable
01h: Time-out occurs after 1 second
02h: Time-out occurs after 2 second
03h: Time-out occurs after 3 second
……………………….......................................
FFh: Time-out occurs after 255 second
N=08
M= 00h: Time-out Disable
01h: Time-out occurs after 1 minute
02h: Time-out occurs after 2 minutes
03h: Time-out occurs after 3 minutes
FFh: Time-out occurs after 255 minutes
60
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