About JSonn.1

JSonn.1 · 2021-10-26

JSonn.1 · 2021-12-19

My VDD is 3.3V. My battery is always connected 100% to the Vbat pins. It is connected correct to the CPU. I used and oscilloscope to see the LSE crystal oscillating. Every time the VDD powers off, the crystal does not oscillate. Even if I don't to...

JSonn.1 · 2021-12-12

JW,I do see the external crystal stops running when power goes away.What can I do to keep the crystal running? I try but can’t get it running off the battery.Please help me know how to get the Crystal running!!!This new technology I invented with thi...

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I use the STM32F429 for my new products, and the Crystal for the RTC stops running when power goes away. I have a battery on it to run RTC, so I can I get the 32.768kHz crystal on OSC32 to run using the battery on Vbat??

Re: I use the STM32F429 for my new products, and the Crystal for the RTC stops running when power goes away. I have a battery on it to run RTC, so I can I get the 32.768kHz crystal on OSC32 to run using the battery on Vbat??

Re: I use the STM32F429 for my new products, and the Crystal for the RTC stops running when power goes away. I have a battery on it to run RTC, so I can I get the 32.768kHz crystal on OSC32 to run using the battery on Vbat??