MCU Clock Design: External Clock & Crystal Oscillator
1. First, identify the clock pins.Provides a 32.768kHz clock.How is 32.768kHz derived? Refer to the chip manual. Typically, a nominal value is used.High-speed clock:Low-speed clock:The low-speed clock is generally used for the RTC module. Its main function is timing.32.768kHzis exactly 2 to the power of 15, making it easy to divide down to whole seconds.1 … Read more