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The information presented in this cross reference is based on TOSHIBA's selection criteria and should be treated as a suggestion only. Please carefully review the latest versions of all relevant information on the TOSHIBA products, including without limitation data sheets and validate all operating parameters of the TOSHIBA products to ensure that the suggested TOSHIBA products are truly compatible with your design and application.
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Operation of Watchdog Timer

Function explanation : [Function explanation]

Simulation : [Operation of the watchdog timer]

Watchdog timer detection time

When the item is set or changed, watchdog timer detection time (timer overflow time) is calculated.
High-speed clock(fc)
Gear select fc  fc/2  fc/4  fc/8  fc/16
System clock fsys:
WDT detection time 215/fsys:  217/fsys:
219/fsys:  221/fsys:
223/fsys:  225/fsys:

Watchdog timer operation

  • Clicking on the start button executes the main routine in order.
  • Clicking overrun button starts an overrun process from the main routine.
  • If overrun occurs, overflow occurs because watchdog timer is not cleared.

<< Watch dog timer >>

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