on the raspberry PI 3 computer IO boards datasheet it has on page 10 (first sheet) is has the option to connect jumper 13-14 to wake up the computer module by connecting global_en to run_pg
run_pg is high when awake and low when halted and pulling global_en low for >1ms wakes the compute module
on page 11(second sheet) it has the rtc setup to reset the module (this appears to reset even if awake)
im looking to be able to wake the module in two situations
periodically if halted and if external power returned when on battery power (separate battery management IC)
- Would this circuit work for the RTC of is there a better way?
wake via RTC
- I think i need a IC/circuit that on a rising edge on Power_Good connects Global_en to RUN_PG for > 1ms, the circuit for the RTC should generate the low pulse but im not sure about rising edge detection of the Power_Good signal from the regulator for external power