2025-01-11

关于爱普生可编程晶振SG-8002 PLL锁相环电路，解释如下： The SG-8002 series contains a PLL circuit and there are a few cases where the jitter value may be increased when…

2024-08-20

芯片内部已有RTC时钟为什么还要外挂32.768KHz晶振？ 答：因为外部晶振提供的时钟信号更稳定，更精准。由RC振荡器提供的RTC内部时钟（internal reference clock source）精度为百分之几，而由石英晶振提供的外部时钟（external reference clock …