5. Each Component Function
* 4003h: WDT counter
W
D6 D5 D4 D3 D2 D1 D0D7
T6 T5 T4 T3 T2 T1 T0T7
Figure 5.8. WDT Counter Port (4003h)
W : Writes watchdog timer count data.
Write watchdog timer counter expiration time
data.
1sec → 01h
8sec → 08h
15sec → 0Fh
30sec → 1Eh
* 4004h : Event output control
--- ---
R/W (Default: XXXX0000b)
--- --- WM2 WM1 WM0RESET
D6
D5 D4 D3 D2 D1
D0D7
Figure 5.9. Event Output Control Port (4004h)
Table 5.22. WM2 - WM0: Interrupt Output Modes
WM2 WM1 WM0 Interrupt output at occurrence of WDT errors
0 0 1 Output to IRQ5 when time expires on the WDT.
0 1 0 Output to IRQ7 when time expires on the WDT.
0 1 1 Output to IRQ9 when time expires on the WDT.
1 0 0 Output to IRQ10 when time expires on the WDT.
1 0 1 Output to IRQ11 when time expires on the WDT.
Others Inhibits output when time expires on the WDT.
Table 5.23. RESET: Reset Output Modes
RESET RESET output at occurrence of WDT errors
0 Inhibits RESET output when time expires on the WDT.
1 Allows RESET output when time expires on the WDT.
Note!
When time expires on WDT, the alarm-out is output irrelevant to the
settings of the port for controlling event output.
User’s Manual
69
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