Hcpl 7840 datasheet
Using the 16 MHz Crystal Oscillator Application Note, Rev. 1 Freescale Semiconductor 5 4 Enabling the On-Chip 16 MHz Oscillator To use the on-chip 16 MHz oscillator with a crystal, you must use a high quality crystal with an ESR below 20 ohms. To enable the on-chip 16 MH z oscillator, the Clock Source Cont rol Register (CSCR) must have Buy PBRC-4.00AR, Ceramic Resonator, 4MHz, 7.4 x 2.6 x 0.6mmPBRC-4.00AR. Browse our latest ceramic-resonators offers. Free Next Day Delivery. Microcontroller Clock - RC Oscillator, Crystal or Resonator? Crystals, ceramic resonators, RC oscillators and silicon oscillators are four types of clock source suited for use with microcontrollers. The optimum clock source type for a particular application is dependent on factors including cost, accuracy and environmental parameters.