Fujitsu FR81S User Manual
CHAPTER 18: WATCHDOG TIMER
6. Usage Example
FUJITSU SEMICONDUCTOR LIMITED
CHAPTER : WATCHDOG TIMER
FUJITSU SEMICONDUCTOR CONFIDENTIAL
25
6. Usage Example
This section gives an example of how the watchdog timer.
This example shows how to clear the watchdog timer.
Figure 6-1 Example of Clearing the Watchdog Timers
Within periodic
Create periodic
Watchdog timer
Clock settings
Boot
• Periodically clear watchdog timer 1 during the set time so that
• Set watchdog timer 0.
• Clear watchdog 0.
• Clear watchdog 1.
• Perform other processing as necessary. (Various calibrations, etc.)
• Use the main timer, PPG, base timer, etc. to run the periodic interrupt
watchdog reset (WDT1) does not apply.
• Watchdog timer 1 is enabled even if not configured.
service based on the timer.
settings
interrupt service
interrupt service
by timer
• Clear the watchdog 0.
• Clear the watchdog 1.
• Perform other processing as necessary. (Various calibrations, etc.)
• Use the main timer, PPG, base timer, etc. to run periodic interrupt
services based on the timer.
• Set the watchdog timer 0.
• The watchdog timer 1 is enabled even if it is not configured.
• The watchdog timer 1 is enabled even if it is not configured.
• Clear the watchdog timer 1 periodically during the set time so that
a watchdog reset (WDT1) does not be applied.
MB91520 Series
MN705-00010-1v0-E
634