Datasheet
Real-Time Clock (RTC) series
I2C BUS Serial Interface RTC with High-precision Oscillation Adjustment
BU9873
Outline
The BU9873 is a
CMOS real-time clock, which has a built-in interrupt generation function.
This product is 2 connected to the CPU via I C interface, and configured to perform serial transmission of time and calendar data to the CPU.
A high-precision oscillation adjustment circuit is also integrated, which is capable of adjusting time counts with digital method, and correcting deviations in the oscillation frequency of the crystal oscillator.
Important Characteristics
■ ■ ■ ■ ■ ■ Time Keeping
Voltage Time Keeping Current 1 (VDD=3V, Ta=+25°C) Time Keeping Current 2 (VD...