XC2165 Overview
The XC2165 series is a CMOS IC operates in 1.5V to 3.6V with the built-in circuits for crystal oscillator and divider. Output is selectable from any one of f0, f0/1, f0/2, f0/4 and f0/8. With oscillation capacitors and a feedback resistor built-in, it is possible to configure a stable fundamental oscillator using only an external crystal.