Real-Time Clock (RTC) ICs

Real-time clocks (RTC) IC are ultra-low-power clock/date devices with programmable time-of-day alarms and programmable square-wave outputs. These devices offer high noise immunity, low current consumption, 12/24 hour mode of operation, auto-correction for leap year, and programmable square wave output, making them ideal for a wide range of design applications.

Our real-time clock ICs count seconds, minutes, hours, day, date, month, and year with leap-year compensation valid up to 2100. The devices feature normal and fast-mode I²C interfaces, two time-of-day alarms, an oscillator stop flag, programmable square-wave outputs that default to 32kHz on power-up, and operating voltages ranging from 1.8V to 5.5V. The Renesas 1338 real-time clock IC includes a 56-Byte battery-backed non-volatile RAM for data storage.