Specifications

Watchdog Timer Features
11-2
11.1 Watchdog Timer Features
The WD module includes the following features:
- 8-bit WD counter that generates a system reset upon overflow
- 6-bit free-running counter that feeds the WD counter via the WD counter
prescale
- A WD reset key (WDKEY) register that clears the WD counter when the
correct combination of values are written, and generates a reset if an in-
correct value is written to the register
- WD check bits that initiate a system reset if the WD timer is corrupted
- Automatic activation of the WD timer, once system reset is released
- A WD prescale with six selections from the 6-bit free-running counter
Figure 11–1 shows a block diagram of the WD module