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Product Detailed Parameters
- Description：IC RTC CLK/CALENDAR I2C MODULE
- Series：-
- Package：Tape & Reel (TR),Cut Tape (CT)
- Mfr：Abracon LLC
- Type：Clock/Calendar
- Features：Alarm, Square Wave Output, SRAM, Trickle Charge, Watchdog Timer
- Memory Size：512B
- Time Format：HH:MM:SS:hh (24 hr)
- Date Format：YY-MM-DD-dd
- Interface：I2C, 2-Wire Serial
- Voltage - Supply：1.5V ~ 3.6V
- Voltage - Supply, Battery：1.4V ~ 3.6V
- Current - Timekeeping (Max)：0.29µA ~ 0.33µA @ 1.8V ~ 3V
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Surface Mount
- Grade：-
- Qualification：-
- Package / Case：Module
- Supplier Device Package：Module
Download product information
Overview
The AB-RTCMC-32.768kHz-IBO5-S3 is an ultra-low power real-time clock module with an I2C bus interface, manufactured by Abracon LLC. It features a built-in 32.768 kHz crystal oscillator and operates within a voltage range of 1.5 V to 3.6 V. The device provides timekeeping accuracy of ±2.0 ppm at +25°C and supports operating temperatures from -40°C to +85°C. Key electrical parameters include a typical current consumption of 60 nA in XTAL mode at 3.0 V and up to 512 bytes of general-purpose RAM. It includes automatic battery switchover, a trickle charger, and programmable alarms.
Feature Summary
- Ultra-low current consumption: 60 nA typ. (XTAL mode @ 3.0V), 17 nA typ. (RC mode @ 3.0V)
- Built-in 32.768 kHz crystal oscillator with ±2.0 ppm factory calibration
- I2C bus interface supporting fast mode up to 400 kHz
- Integrated power management with automatic battery switchover and trickle charger
Applications
- Smart cards
- Wireless sensors and tags
- Medical/Healthcare electronics
- Smart Utility meters
- Data loggers
Procurement Notes
Verify the EOL status indicated in the datasheet revision history before procurement planning. Confirm package availability in Tape & Reel or Cut Tape formats as specified. Ensure design compatibility with the 1.5 V to 3.6 V supply range and I2C voltage levels. Check for RoHS compliance requirements against local regulations.
Selection Notes
Select this module for applications requiring compact size (3.7 x 2.5 x 0.9 mm) and low standby power. Consider the RC autocalibration mode if extended temperature stability beyond the XTAL mode's parabolic deviation is needed. Verify that the 512-byte SRAM meets data retention requirements. Ensure the system can handle the specific VDD falling slew rate limits during battery switchover events.
Part Context
This component belongs to the AB-RTCMC series of real-time clock modules from Abracon. It integrates the RTC logic, memory, and a tuning fork crystal into a single surface-mount package. The series is designed for battery-backed systems where space and power efficiency are critical constraints.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should evaluate other Abracon RTC modules or generic I2C RTC ICs with external crystals, ensuring pinout and register compatibility.
