Posted on May 17, 2011 at 14:24Dear, I tried different crystals (also different crystal models, so the problem probably isn't the crystal). Then, I washed many many times the pcb near the crystal and microcontroller, but nothing happened: it seems t...
Posted on May 17, 2011 at 14:24Let me write another consideration: I tried another board, fully functioning, with the Epson Toyocomm MC-306 32.768kHz 6pF crystal. I found that it works fine even with no addictionally capacitor CL1 and CL2 or with CL...
Posted on May 17, 2011 at 14:24Ciao! Here attached the datasheets: for the citizen cmr200t I bought the 6pF version (Farnell Italy part number 1652560 - see the citizen catalog page http://www.citizencrystal.com/khz.htm) and for the Epson MC-306 the...
