
PRELIMINARY
S3C6400
RISC MICROPROCESSOR
Watchdog Timer
34-1
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
Specifications and information herein are subject to change without notice.
34
WATCHDOG TIMER
This chapter describes the functions and usage of Watchdog Timer in S3C6400X RISC microprocessor.
OVERVIEW
The S3C6400X RISC microprocessor 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.
Advantage in using WDT instead of PWM timer is that WDT generates the reset signal.
FEATURES
The Watchdog Timer includes the following features:
z
Normal interval timer mode with interrupt request.
z
Internal reset signal is activated when the timer count value reaches 0 (time-out).
z
Level-triggered Interrupt mechanism.