2520 30MHZ 2520 32.768K 3.3V 2520 32.768K 3.3V 20PPM 2520 32M 2520 32M 10PF 2520 32M 10PF 10PPM 2520 32M 10PF X-TAL 2520 32M 10PPM 8PF 2520 32M 12PF 2520 32M 12PF 10PPM