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Q s e ve n M o d u l e
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Appendix A Programming the Watchdog Timer
= 010
Power LED pin is driven low.
= 011
Power LED pin outputs 2Hz pulse
with 50% duty cycle.
= 100
Power LED pin outputs 1Hz pulse
with 50% duty cycle.
= 101
Power LED pin outputs 4Hz pulse
with 50% duty cycle.
= 110
Power LED pin outputs 0.25Hz pulse
with 50% duty cycle.
=111
Power LED pin outputs 0.25Hz pulse
with 50% duty cycle..
: WDTO# count mode is 1000 times faster.
= 0
Disable.
= 1
Enable.
: select WDTO# count mode.
= 0
second
= 1
minute
: Enable the rising edge of keyboard Reset
(P20) to force Time-out event.
= 0 Disable
= 1 Enable
: Disable / Enable the WDTO# output low
pulse to the KBRST# pin (PIN60)
= 0 Disable
= 1 Enable
: Reserved.
A-4
A Q 7 - L N
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