Intel PCM-9452 Uživatelský manuál stáhnout pdf (Strana 53)

Compact Board PCM-9452

Appendix A Programming the Watchdog Timer A - 5

4 WDT output through PWROK1/PWROK2 (pulse) enable

3 Select the interrupt level

note

for WDT

WatchDog Timer Time-out Value (LSB) Register (Index=73h,

Default=00h)

Bit Description

7-0 WDT Time-out value 7-0

WatchDog Timer Time-out Value (MSB) Register (Index=74h,

Default=00h)

Bit Description

7-0 WDT Time-out value 15-8

A.2 ITE8712 Watchdog Timer Initial Program

.MODEL SMALL

.CODE

Main:

CALL Enter_Configuration_mode

CALL Check_Chip

mov cl, 7

call Set_Logic_Device

;time setting

mov cl, 10 ; 10 Sec

dec al

1 2 ... 48 49 50 51 52 53 54 55 56 57 58 ... 63 64

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Intel PCM-9452 Uživatelský manuál Strana 53