Samsung S3C2440A - Manual (Page 433)

S3C2440A RISC MICROPROCESSOR WATCHDOG TIMER
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WATCHDOG TIMER
OVERVIEW
The S3C2440A watchdog timer is used to resume the controller operation whenever it is disturbed by malfunctions
such as noise and system errors. It can be used as a normal 16-bit interval timer to request interrupt service. The
watchdog timer generates the reset signal for 128 PCLK cycles.
FEATURES
— Normal interval timer mode with interrupt request
— Internal reset signal is activated for 128 PCLK cycles when the timer count value reaches 0 (time-out).