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Product Detailed Parameters
- Description：IC RTC CLK/CALENDAR I2C 16QFN
- Series：-
- Package：Tape & Reel (TR),Cut Tape (CT)
- Mfr：Abracon LLC
- Type：Clock/Calendar
- Features：Alarm, Leap Year, SRAM, Trickle-Charger, Watchdog Timer
- Memory Size：256B
- Time Format：HH:MM:SS:hh
- Date Format：YY-MM-DD-dd
- Interface：I2C, 2-Wire Serial
- Voltage - Supply：1.7V ~ 3.6V
- Voltage - Supply, Battery：1.5V ~ 3.6V
- Current - Timekeeping (Max)：0.17µA ~ 0.22µA @ 1.8V ~ 3V
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Surface Mount
- Grade：-
- Qualification：-
- Package / Case：16-VFQFN Exposed Pad
- Supplier Device Package：16-QFN (3x3)
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Overview
The Abracon AB0804-T3 is a clock/calendar real-time clock IC in a 16-VFQFN exposed pad package. It supports I2C 2-Wire Serial interface with 256B SRAM memory. Operating voltage ranges from 1.7V to 3.6V, with battery supply from 1.5V to 3.6V. Timekeeping current is 0.17µA to 0.22µA at 1.8V to 3V. Features include alarm, leap year, trickle-charger, and watchdog timer. Date format is YY-MM-DD-dd; time format is HH:MM:SS:hh. Operating temperature spans -40°C to 85°C.
Feature Summary
- Integrated 256B SRAM for data storage
- Low power consumption: 0.17µA–0.22µA timekeeping current
- Supports alarm, leap year correction, and watchdog timer functions
- I2C 2-Wire Serial interface compatibility
Applications
- Portable electronic devices requiring precise timekeeping
- Battery-powered systems needing low standby current
- Industrial equipment with watchdog timer requirements
Procurement Notes
Verify the 16-QFN (3x3) package dimensions and exposed pad thermal requirements against PCB layout guidelines. Confirm I2C address configuration and pull-up resistor values for the specific bus speed. Ensure voltage levels match the 1.7V–3.6V supply range for reliable operation across the -40°C to 85°C temperature spectrum.
Selection Notes
Select this component when a compact 16-pin QFN footprint is required alongside integrated SRAM and standard RTC features. The 1.7V minimum supply voltage suits applications where the main system rail may drop below 2.0V. Verify that the 256B memory capacity meets data logging needs without external storage.
Part Context
The AB0804-T3 belongs to Abracon's line of I2C real-time clock modules. The '-T3' suffix indicates tape and reel packaging. This part integrates calendar and timekeeping functions into a small surface-mount package, targeting space-constrained designs.
Replacement Considerations
Check pinout compatibility and register map differences if substituting with other 16-pin I2C RTCs. Verify that alternative parts support the same 256B SRAM size and similar low-power timekeeping currents.
