Won't go back to SLEEP after 1st Interrupt

[jellis00]

Jellis

This may be totally irrelevant. How do you measure the sleep current? Are you measuring only the CPU current or the total circuit including all its peripherals. Maybe you are measuring the total current of all peripherals included. In that case, you should also look at the possibility that some peripheral is getting biased due to the active state of your PIC output to it.

I have many devices in the field that use the sleep mode and the total system current is in the region of 40-100uA. 40uA is typical for the PIC. Rest should be related to your circuit and its peripherals.

It will be helpful if you can post a schematic to assist in identifying your issue.

Jerson

I am measuring the SLEEP power by inserting in series my ampmeter at the Vcc input to the MCU. I am not measuring the circuit power to peripherals because they are either not connected during my test or for those that are powered by a pin from the PIC, they are shut down.

I am also enclosing a copy of the schematic for my design, including peripherals, per your request. If you see any precautions I should take as far as setting interfaces to peripherals before SLEEP to save power, I would greatly appreciate your suggestions.