16MHz ceramic resonator 3pin vs 2 pin
The three-pin ceramic resonator includes internal capacitors. These capacitors help resonate the piezo-ceramic element at 16 MHz. in a Pierce-type oscillator. The 2-pin ceramic resonator omits these capacitors - you have to add them yourself For a 16 MHz 2-pin ceramic resonator, these might be in the 30pF ballpark. However, the 2-pin ceramic resonator is more versatile - it can be used in oscillator circuits other than the ubiquitous Pierce oscillator.



simulate this circuit &ndash; Schematic created using CircuitLab