I saw on the Internet that the STM32 RTC would not oscillate when using a 20pF 32768 crystal oscillator. I tried it these days and it did happen when I powered it on for the first time. Later, I conne
At the end of 2009, Anhui Business Daily published a report titled "Security Demonstration City Electronic Eyes Became Blind". Recently, such an incident occurred in Qianshan County, Anhui Province: Z
[Request] Experts, please help me draw a circuit diagram of NEC720114 as USB hub. I think this IC is relatively stable, so I hope friends who have used this IC can help me draw a diagram. Remuneration
Is it true that there is no problem when two PLLs are connected in series during synthesis, but there will be problems during routing? ? Because generally we connect them in the way of IBUFG+BUFG, and