2023-03-13 08:56 AM
Hi, I'm trying to do embedded 103c8t6, and I'm having some trouble with selecting the right crystal.
Here is my Schematic. I'm using ABS07-32.768khz with 12.5pF load Capacitances and the equivalent series resistance is 70kR. I took Cstray as 5pF that's why CL1 and CL2 are 15pF for now, but there are some troubles with this design.In the datasheet of stm32f103x, states that:
Equivalent resistance value 30kR and load capacitances of 15pF. I'm going to use 70kR in my design. Can this one cause me some problems.
2023-03-13 09:00 AM
See AN2867
Pretty sure the F1's really wants 6-7pF crystals, not 9 or 12pF ones.
Perhaps look a NUCLEO, EVAL and DISCO board BoM for working combinations.
2023-03-13 10:40 AM
How can i access their bom list?