AB-RTCMC-32.768KHZ-B5GA-S3-T

Overview

The Abracon AB-RTCMC-32.768KHZ-B5GA-S3-T is a Real-Time Clock (RTC) module featuring an integrated 32.768 kHz crystal oscillator and I2C interface. It operates within a clock supply voltage range of 1.2V to 5.5V and supports I2C communication at frequencies up to 400kHz. The device provides year, month, day, weekday, hours, minutes, and seconds data in a YY-MM-DD-dd date format and HH:MM:SS time format. Key electrical parameters include a typical current consumption of 250nA at 3.0V with the I2C bus inactive, and a frequency accuracy of ±20ppm at +25°C. It is housed in a compact 10-SMD Module package measuring 3.7 x 2.5 x 0.9 mm.

Feature Summary

• Integrated 32.768 kHz crystal oscillator with ±20ppm frequency accuracy at +25°C
• Ultra-low power consumption: 250nA typical at 3.0V with I2C bus inactive
• Programmable CLKOUT output supporting 32.768 kHz, 1024 Hz, 32 Hz, and 1 Hz frequencies
• Includes alarm/timer functions, century flag, low voltage detector, and internal power-on reset

Applications

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

Procurement Notes

Verify component status as the datasheet indicates EOL (End of Life). Confirm availability through authorized distributors or secondary market suppliers. Ensure ordering suffixes match required packaging options such as Tape & Reel (TR) or Cut Tape (CT). Check for RoHS compliance documentation if required by specific project standards.

Selection Notes

Select this module when a compact RTC solution with built-in quartz is required. It is suitable for designs needing a wide operating voltage range from 1.2V to 5.5V. Consider the 10-SMD Module package dimensions (3.7 x 2.5 x 0.9 mm) for space-constrained layouts. Verify that the I2C slave addresses (Read A3h, Write A2h) are compatible with the system bus configuration.

Part Context

This part belongs to the AB-RTCMC series of real-time clock modules manufactured by Abracon LLC. These modules integrate Micro Crystal AG RTC technology with embedded oscillators. The B5GA suffix typically denotes specific factory calibration or tolerance characteristics within the product line, though exact suffix definitions should be confirmed via official Abracon documentation.

Replacement Considerations

As the datasheet marks this part as EOL, direct replacements may not be available. Evaluate other Abracon AB-RTCMC variants or similar I2C RTC modules with integrated crystals. Ensure pin compatibility and voltage ranges match the existing design constraints before substituting.