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Original question:

TPL5010: TPL5010

TPL5010: TPL5010

Jussi Hakulinen
Prodigy 20 points
Part Number: TPL5010
Other Parts Discussed in Thread: TPL5110

Tool/software:

Hi.
Many thks.
Is the following case possible? To use two pcs of TPL5010. Very economical and flexible component.
Remarks (schematic attached):
1) For watchdog timer use - can the WAKE signal be unconnected? No need in WDT use. The TPL5010 datasheet says "The DONE signal resets the counter of the watchdog only"
2) After POR Q3 is in OFF state - only U9 is "active" during Linux loading -100sec timeout.
3) When the app program starts, one DONE (WDI) pulse to confirm to reset counter of both TLP's.
4) Then set WDS to logic "1" - Q4 to ON state - U15 is "active" - 2sec timeout.
5) WDI pulse every second as normal WDT to both TPL's.

OK?

BR Jussi8688.TPL5010-1.pdf

  • 0
    TI__Guru* 97760 points

    Hi Jussi,

    I am not sure I understand your application.

    The TPL5010 is a watchdog timer, it sends periodic WAKE signal to ping the receiver, and the receiver has to respond by sending DONE signal back to the TPL device within the configured time interval so that the timer will continue to send WAKE signal. If you leave the WAKE pin unconnected, there is no watchdog anymore. 

    If you need a timer that just send periodic signal, you should use TPL5110.