/diy/ - Do It Yourself

Anonymous Wed Mar 3 04:03:24 2021 No.2045767 [View]
File: 38 KB, 568x340, confidential.png [View same] [iqdb] [saucenao] [google]

>>2045764
Also I just realised that this circuit somehow drives the 32.768kHz crystal on pin 6 single-endedly. Didn't know that was a thing. It's the middle row in >>2045764, and I assume the upper line is for external crystal, while the lower is for driving it with a clock cycle. I guess there's feedback going to the crystal via that MOSFET's source and the 20pF capacitor?

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/diy/ - Do It Yourself

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