ROHM BU9873FJ-GTE2, Real Time Clock (RTC) Serial-I2C, 8-Pin SOP

  • RS Stock No. 169-9344P
  • Mfr. Part No. BU9873FJ-GTE2
  • Manufacturer ROHM
Product overview and Technical data sheets
Legislation and Compliance
RoHS Certificate of Compliance
Product Details

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.

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
±30 Second Adjustment Function
Automatic Leap Year Recognition up to the Year 2099

Attribute Value
Functions Real Time Clock
Date Format YY:MM:DD:dd
Time Format HH:MM:SS
Bus Type Serial-I2C
Mounting Type Surface Mount
Package Type SOP
Pin Count 8
Dimensions 5.25 x 3.9 x 1.37mm
Length 5.25mm
Width 3.9mm
Height 1.37mm
Maximum Operating Supply Voltage 5.5 V
Minimum Operating Temperature -40 °C
Minimum Operating Supply Voltage 1.8 V
Maximum Operating Temperature +85 °C
50 In stock for delivery within 3 working days
Price Each (Supplied on a Reel) Quantities below 150 on continuous strip
HK$ 3.735
(exc. GST)
Per unit
100 - 240
250 - 490
500 - 990
1000 +
Packaging Options: