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AB-RTC-XLA-32.768KHZ-2-T1

AB-RTC-XLA-32.768KHZ-2-T1

ABRACON
Real Time Clock AECQ-200 IC RTC Ultra small Low Power CLK/CALENDAR I2C MODULE 3215
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Overview

The AB-RTC-XLA-32.768KHZ-2-T1 is an ultra-low power Real-Time Clock module with an integrated 32.768kHz crystal resonator. It features an I2C interface and is AEC-Q200 qualified for automotive reliability, operating across a wide supply voltage range of 0.9V to 5.5V. With a typical timekeeping current of only 190nA at 3V, it is designed for battery-backed and energy-sensitive timing applications.

Why Choose This Part

This module integrates the crystal resonator into a tiny 3.2mm x 1.5mm package, eliminating the need for external tuning capacitors and simplifying PCB layout. Its ability to operate down to 0.9V makes it compatible with nearly any battery chemistry, while the integrated oscillator stop detection ensures system integrity by flagging potential timing failures.

Applications

Automotive Telematics
Provides reliable time-stamping for vehicle event logs and navigation systems with AEC-Q200 qualification.
Battery-Powered IoT Nodes
Extends battery life in remote sensors using its ultra-low 190nA typical current consumption.
Industrial Data Loggers
Maintains accurate calendar and clock data for long-term environmental or process monitoring.
Smart Utility Meters
Used for time-of-use billing accuracy with programmable offset registers for frequency adjustment.

Key Specifications

Type Clock/Calendar
Features Alarm, Leap Year
Interface I2C
Date Format YY-MM-DD-dd
Time Format HH:MM:SS
Mounting Type Surface Mount
Package / Case 8-WCDFN
Voltage - Supply 0.9V, 1.8V ~ 5.5V
Operating Temperature -40degC ~ 85degC (TA)
Supplier Device Package 8-CLCC (3.2x1.5)
Current - Timekeeping (Max) 190nA (Typ) @ 3V

Getting Started

Interface the module via the I2C bus using a standard master controller, ensuring pull-up resistors are sized for your specific bus speed. Configure the internal offset register to fine-tune accuracy based on the application environment. For prototyping, ensure the 8-WCDFN package is mounted on a compatible breakout board as its small 1.5mm width requires precise soldering.

Also Consider

DS1307 Maxim Integrated / Analog Devices - A widely used 5V I2C RTC alternative if AEC-Q200 qualification and ultra-low nano-amp current are not primary requirements.