Principle and design principle of crystal oscillation:The crystal oscillator pins of various logic chips can be equivalent to a capacitor three-point oscillator. The internal of the crystal oscillator pin is usually an inverter, or an odd number of inverters are connected in series. At the crystal o

Crystal load capacitor external matching capacitors CL1 and CL2 are calculated:If the equivalent capacitance at both ends of the crystal oscillator is different from the nominal load capacitance of the crystal oscillator, the resonant frequency of the crystal oscillator output will deviate from the

The relationship between crystal load capacitance and frequency offset:The load capacitance mainly affects the load resonance frequency and the equivalent load resonance resistance. Together with the quartz resonator, it determines the operating frequency of the oscillator. By adjusting the load cap

Corresponding MCU, ROMan">WiFi or USB HUB generally need to provide external clock signal, need to plug a crystal oscillator, often customers ask, how to calculate the external matching capacitor capacity value combined with the crystal load capacitance and need to pay attention to the crystal oscil