LPC 2364 unable to reset with external watchdog

[pavanimanchala]

Hi i am trying to rest the micro controller using an external watchdog timer.I disabled the watchdog pulse but the external watchdog is still unable to reset the controller.I probed the WDT input and there is no pulse coming from the controller

The IC used as external watchdog is TPS3823. 

[CarlosCasillas]

Hi Pavani,

In case of the internal Watchdog of LPC2364, the Watchdog Clock (WDCLK) source can be selected from the RTC clock, the Internal RC oscillator (IRC), or the APB peripheral clock.

If you are using the RESET pin of the LPC2364 device, have you ensured you have proper voltage levels? You should also check RSTOUT pin, as described on Table 4 “Pin description” of LPC2364 datasheet.

Hope this will be useful for you.
Best regards!
/Carlos
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