Setting up my MCU.

Thread Starter

FroceMaster

Joined Jan 28, 2012
708

trebla

Joined Jun 29, 2019
599
Some 32kHz crystals (like small cylindrical ones) are unstable if their shell is not connected to MCU supply common ground. To measure crystal frequency you need connect scope probes trough very small capacitors (couple of picofarads) and AC input mode. To make reasonable frequency measurements, scopes bandwith must be about 5 times higher than expected frequency.
 

Thread Starter

FroceMaster

Joined Jan 28, 2012
708
Hi again,.
Somehow after setting a 1M Resistor in series on SOCS Out, i finaly got a working x-tal.
Now it's working with Timer1 , and i got a 1hz, have been running for 15 hours now, and not 1 second off. :)

Working with next step, later on.
 
Top