Specifications

Watchdog Timer
Changing Time Delays
Table 13-1 shows the two possibilities for the stage delays. The
stage 1 delay is measured from the watchdog strobe to the non-
maskable interrupt. The stage 2 delay is measured from the watchdog
strobe to the local reset. The stage 2 - stage 1 delay is calculated as
the non-maskable interrupt to local reset delay.
The first entry in Table 13-1 shows the default stage delays. The
second entry shows an option. The stage 1 delay is implemented with
a discrete surface mount resistor and capacitor. This delay cannot be
changed. The stage 2 delay can be changed by using cuttable traces,
as described on page A-18.
Table 13-1
Watchdog Timer Stage Delays.
Stage 1 Stage 2 Stage 2-Stage 1
(ms) (ms) (ms)
Default
60 min 250 min 150 min
100 max 1000 max 940 max
Optional
60 min 500 min 400 min
100 max 2000 max 1940 max
13-7