RTC clock synchronization buffer driver delay chip

NE556 Double Precision Timer

Clock chip type: Clock/Calendar Memory capacity: 56B Time format: HH:MM:SS (12/24 hr) Date format: YY-MM-DD-dd Interface type: I2C, 2-Wire Serial 64 x 8, serial , I2C real-time clock

A low-power CMOS real-time clock/calendar circuit, which provides a programmable clock output, an interrupt output and a power-down detector, all addresses and data are serially transferred through the I2C bus interface.

CDCM61002 1:2 Ultra-Low Jitter Crystal Clock Generator

CDCLVC1102 Low Jitter 1:2 LVCMOS Fanout Clock Buffer

IC RTC CLK/CALENDAR I2C

Real-time clock with 31 bytes of static RAM and trickle charge mode

Low-power high-frequency dual CMOS timer/oscillator, Iq=220uA, Vcc=2-16V, can generate up to 2.7MHz square wave