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I²C BUS Serial Interface RTC with High-precision Oscillation Adjustment - BU9873NUX

The BU9873 is a CMOS real-time clock, which has a built-in interrupt generation function. This product is connected to the CPU via I²C 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.

* This product is a STANDARD grade product and not recommend for on-vehicle devices.
Part Number | BU9873NUX-TTR
Status | Active
Package | VSON008X2030
Unit Quantity | 4000
Minimum Package Quantity | 4000
Packing Type | Taping
RoHS | Yes

Specifications:

Time Keeping Voltage(Min.)[V]

1.45

Time Keeping Current(Typ.)[uA]

0.4

Time Keeping Current(Max.)[uA]

1

Supply voltage(Min.)[V]

1.8

Supply voltage(Max.)[V]

5.5

Access Frequency 1 [kHz]

100

Access Frequency 1 [kHz]

400

Features:

・Connected to the CPU via I²C Interface
・Time (Hour・Minute・Second, Selectable 12-Hour and 24-Hour Mode Setting)
・Calendar (Year・Month・Day・Week)
・Periodic Interrupt Function (Output from INTRB, Ranging from 1 Second to 1 Month)
・Alarm Interrupt Function (Day-of-Week・Hour・Minute in Setting Format, Output from INTRB)
・Oscillation Halt Sensing Function
・32.768 kHz Clock Output (Output from 32KOUT with Control Pin)
・±30 Second Adjustment Function
・Automatic Leap Year Recognition up to the Year 2099
・Built-in Oscillation Stabilizing Capacitors (CG, CD)
・High-Precision Oscillation Adjustment Circuit