8.3 Feature Description

The DONE, WAKE and RSTn signals are used to implement the watchdog function. The TPL5010 is programmed to issue a periodic WAKE pulse to a µC which is in sleep or standby mode. After receiving the WAKE pulse, the µC must issue a DONE signal to the TPL5010 at least 20 ms before the rising edge of the next WAKE pulse. If the DONE signal is not asserted, the TPL5010 asserts the RSTn signal to reset the µC. A manual reset function is realized by momentarily pulling the DELAY/M_RST pin to VDD.

Figure 8. Watchdog