AB0801-T3

Overview

The Abracon AB0801-T3 is a Real-Time Clock (RTC) integrated circuit designed for precise timekeeping and calendar functions. It features an I2C, 2-Wire Serial interface and operates within a supply voltage range of 1.7V to 3.6V, with battery backup support from 1.5V to 3.6V. The device maintains time in HH:MM:SS:hh format and dates in YY-MM-DD-dd format. Timekeeping current consumption ranges from 0.17µA to 0.22µA at 1.8V to 3V. It is housed in a 16-VFQFN Exposed Pad package (16-QFN 3x3) and supports surface mount mounting.

Feature Summary

• Integrated Alarm and Leap Year calculation capabilities
• Built-in Trickle-Charger function for battery backup management
• Low power consumption: 0.17µA ~ 0.22µA @ 1.8V ~ 3V

Applications

• Battery-powered IoT devices
• Portable electronics requiring precise timekeeping
• Embedded systems with I2C connectivity

Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm package type variations such as Tape & Reel or Cut Tape. Ensure compatibility with system voltage levels between 1.7V and 3.6V. Confirm that the 16-VFQFN footprint matches the PCB layout requirements. Check for any specific temperature grade certifications if operating outside the standard -40°C to 85°C range.

Selection Notes

Select this component when a compact RTC with I2C interface and trickle charger is required. The 16-QFN package suits space-constrained designs. Verify that the target application's microcontroller supports the I2C protocol. Consider the low standby current for battery-operated applications. Ensure the external crystal frequency matches the internal oscillator requirements specified in the datasheet.

Part Context

The AB0801-T3 belongs to Abracon's portfolio of real-time clock solutions. It is part of the broader category of clock/calendar ICs utilizing serial interfaces. The device integrates essential timing functions into a small form factor, suitable for modern electronic designs where power efficiency and size are critical constraints.

Replacement Considerations

Consult official substitution guides for compatible RTCs with similar I2C interfaces and voltage ranges. Verify pinout compatibility before replacing. Ensure equivalent memory size and feature sets such as alarm and leap year support.