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

Overview

The Abracon AB-RTCMC-32.768KHZ-B5ZE-S3-T is a Real-Time Clock (RTC) integrated circuit designed for clock and calendar functions. It features an I2C 2-Wire Serial interface and operates within a supply voltage range of 1.2V to 5.5V, with battery backup support from 1.8V to 5.5V. The device maintains timekeeping current consumption of up to 0.5µA at 2V–5V. It supports HH:MM:SS time formats in both 12/24-hour modes and YY-MM-DD-dd date formats. Key features include alarm capabilities, leap year compensation, and square wave output. The component is housed in a 10-SMD module package and is rated for operation between -40°C and +85°C.

Feature Summary

• I2C 2-Wire Serial interface for digital communication
• Low power consumption: 0.5µA max during timekeeping (2V–5V)
• Hardware features: Alarm, Leap Year correction, Square Wave Output
• Wide operating voltage: 1.2V–5.5V (main), 1.8V–5.5V (battery)

Applications

• Clock/Calendar modules requiring low power retention
• Battery-backed systems needing precise timekeeping
• Embedded devices utilizing I2C communication protocols

Procurement Notes

This component is available in Tape & Reel (TR) and Cut Tape (CT) packaging options. Verify the specific suffix B5ZE against manufacturer documentation to confirm exact pinout and functional variations, as ordering suffixes may indicate distinct hardware revisions or configuration settings not detailed in general specifications.

Selection Notes

Select this RTC when an I2C interface is required instead of SPI alternatives within the same family. Ensure the system voltage aligns with the 1.2V–5.5V operational range. The 10-SMD Module package requires appropriate surface mount footprint design. Confirm that the 0.5µA current draw meets the standby power budget for the target application.

Part Context

This part belongs to the Abracon RTCMC series of real-time clock modules. It serves as an I2C variant, distinguishing it from SPI-based counterparts like the AB-RTCMC-32.768KHZ-ZIZE-S2-T. The series provides compact, pre-packaged solutions integrating the RTC IC with necessary passive components and crystals in a single SMD module.

Replacement Considerations

Direct replacements must match the I2C interface and 10-SMD Module form factor. Consider other Abracon RTCMC models with I2C interfaces if availability differs. Verify compatibility with existing firmware drivers, as register maps may vary between different manufacturers or even different series within the same brand.