Abracon LLC AB-RTCMC-32.768KHZ-B5ZE-S3-T

Description
The AB-RTCMC-32.768kHz-AIGZ-S7 is a real-time clock (RTC) module with an integrated crystal oscillator operating at 32.768 kHz. It features a low timekeeping current of 350 nA at 3 V and can operate down to 1.0 V. The module communicates via a 400 kHz I²C bus interface and has a low operating current of 35 μA.

Features
Built-in crystal oscillator at 32.768 kHz
Timekeeping current of 350 nA at 3 V
Timekeeping down to 1.0 V
1.3 V to 4.4 V I²C bus operating voltage
Low operating current of 35 μA (at 400 kHz)
32.768 kHz square wave on power-up for driving a microcontroller in low-power mode
Programmable from 1 Hz to 32.768 kHz
400 kHz I²C serial interface
Oscillator stop detection circuit monitors clock operation
Accurate programmable watchdog (62.5 ms to 31 min timeout)
Counters for tenths/hundredths of seconds, seconds, minutes, hours, day, date, month, year, and century
Software clock calibration to compensate for crystal deviation due to temperature
Automatic leap year compensation
Ultra-small, 3.2 x 1.5 mm, lead-free 8-pin ceramic leadless chip carrier

Applications
Wide range in communication and measuring equipment
Commercial and Industrial applications
Automotive electronics applications
Wireless communications
PDA and Palm Pilots
Credit Cards with Security Technology