BLX8563 Real Time Clock IC, Single Alarm Signal, Ultra-Low Power, I²C Interface SOP8 TSSOP8 MSOP8 UDFN8

The BLX8563 is a low-power Real Time Clock IC offering one alarm signal with four interrupt sources and programmable periodic interrupts from 484µs to 1 week. With a standby current of only 400nA at 3.3V, it ensures long battery life in portable applications.
The device features an open-drain interrupt output, operates from 0.9V to 5.5V, and communicates via the I²C interface, making it compatible with low-voltage systems. Multiple package options allow flexible PCB design.

Key Specifications

• Alarm Configuration: 1 Signal / 4 Sources

• Periodic Interrupt: 484µs to 1 Week

• Standby Current: 400nA @ 3.3V

• CLK / INT Output: Open Drain

• Clock Adjustment: Not Supported

• Interface: I²C

• VDD (Work / I/O): 0.9V – 5.5V

• Packages: SOP8, TSSOP8, MSOP8, UDFN8

Applications

• Wearable electronics

• Portable consumer devices

• Low-power timing systems

Features

• Ultra-low voltage operation

• Multiple interrupt sources

• Compact package availability