AB-RTCMC-32.768KHZ-AIGZ-S7-T

Overview

The AB-RTCMC-32.768KHZ-AIGZ-S7 is a Real Time Clock (RTC) module manufactured by Abracon LLC, featuring an integrated 32.768 kHz crystal oscillator and I2C bus interface. Encased in a compact 3.2 x 1.5 x 0.8 mm lead-free ceramic 8-pin CLCC package, it supports timekeeping down to 1.0 V with a typical current consumption of 350 nA at 3 V. The device provides programmable alarms, watchdog timers, leap year compensation, and software clock calibration. It operates within a temperature range of -40°C to +85°C and includes oscillator stop detection for reliable monitoring.

Feature Summary

• Integrated 32.768 kHz crystal oscillator with ±20 ppm accuracy at +25°C
• Ultra-low power consumption: 350 nA typical at 3 V during timekeeping
• I2C serial interface supporting up to 400 kHz communication speed
• Programmable features including alarms, watchdog timer, and CLKOUT square wave output

Applications

• Commercial and industrial equipment requiring precise timekeeping
• Wireless communications devices and PDAs
• Automotive electronics applications
• Credit cards with security technology

Procurement Notes

Verify the specific ordering suffix 'T' indicates a tape and reel quantity of 1000 pieces per reel. Confirm that the component meets RoHS/RoHS II compliance standards as stated in the datasheet. Ensure the design accommodates the 8-WCDFN package dimensions and recommended land pattern for proper surface mount assembly.

Selection Notes

Select this module when a compact form factor (3.2 x 1.5 mm) and low standby current are critical. It is suitable for systems operating between 1.3 V and 4.4 V on the I2C bus. Consider the built-in crystal if external components must be minimized. Verify that the required timeout range for the watchdog timer (62.5 ms to 31 min) aligns with system safety requirements.

Part Context

This part belongs to Abracon's RTCMC series of real-time clock modules. It integrates the timing source and logic into a single ceramic package, reducing board space compared to discrete solutions. The AIGZ designation typically denotes automotive-grade qualification or specific material composition within the product line, though explicit automotive certification details are not fully detailed in the provided text beyond application mentions.

Replacement Considerations

No direct public substitute part numbers are identified in the provided documentation. When replacing, ensure the new component matches the 8-pin CLCC footprint, I2C voltage levels (1.3V–4.4V), and pinout configuration, specifically noting Pin 1 (SDA) and Pin 8 (SCL) assignments.