Hello ya all

I am trying to implement a battery backup and a low power mode when theres no power. I just need to detect a door opening and record the time and date to a serial eeprom.

When I looked up the pic I'm useing I was happy, only 500 Na in standby but when I looked up the crystal oscillator I'm using it said 20ma

I have always used these type of oscillators due to solid performance and not needed the hard to find caps. But this project is all SMD and needs to be low power while the machines turned off all night. Sooooo

this Pic is the PIC16F59-I/PT running at 20mhz (but 4mhz would work fine).
How many mili amps or N amps would a normal crystal with caps use ? and would I define LP crystal ?