Specifications

Watchdog Timer
FUNCTIONAL DESCRIPTION
Figure 13-1 illustrates a functional diagram of the watchdog timer.
The diagram includes a timer and a delay for each stage. The
functional blocks are described below.
Stage 1 T
imer
The first stage of the watchdog timer generates a non-maskable
interrupt to the local CPU if the watchdog timer is jumper selected
and armed and a strobe does not occur within the time period defined
by the Stage 1 Delay functional block.
Stage 1
Delay
Stage 1
Timer
Stage 2
Delay
Stage 2
Timer
Non-maskable Interrupt
Local Reset
Arm/Strobe
Figure 13–1. Watchdog Timer Functional Diagram.
13-3