ROHM BU9873FVM-GTTR, Real Time Clock (RTC) Serial-I2C, 8-Pin MSOP

  • RS Stock No. 169-8920
  • Mfr. Part No. BU9873FVM-GTTR
  • Manufacturer ROHM
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

Specifications
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 MSOP
Pin Count 8
Dimensions 3.25 x 2.8 x 0.75mm
Length 3.25mm
Width 2.8mm
Height 0.75mm
Maximum Operating Supply Voltage 5.5 V
Minimum Operating Supply Voltage 1.8 V
Maximum Operating Temperature +85 °C
Minimum Operating Temperature -40 °C
Temporarily out of stock - back order for despatch 30/04/2020, delivery within 6 working days from despatch date
Price Each (On a Reel of 3000)
MYR 1.61
units
Per unit
Per Reel*
3000 +
MYR1.61
MYR4,830.00
*price indicative
Related Products
A range of real-time clock products from Maxim ...
Description:
A range of real-time clock products from Maxim incorporating non-volatile RAM memory for data retention. The clock/calendar functions provide seconds, minutes, hours, day, date, month, and year information. The clocks generally operate in either the 12 or 24-hour format with ...
RX-8803 high stability SMD real time clock modules ...
Description:
RX-8803 high stability SMD real time clock modules with a built in frequency adjusted 32.768 kHz crystal unit and DTCXO. The devices in this module are fabricated via a C-MOS process for low current consumption, enabling long term battery back-up. ...
The MCP7940N series of low-power Real-Time Clocks (RTC) ...
Description:
The MCP7940N series of low-power Real-Time Clocks (RTC) uses digital timing compensation for an accurate clock/calendar, a programmable output control for versatility, and a power sense circuit that automatically switches to the backup supply. Using a low-cost 32.768 kHz crystal, ...
The MCP79412 general purpose I2C™Compatible real-time clock/calendar (RTCC) ...
Description:
The MCP79412 general purpose I2C™Compatible real-time clock/calendar (RTCC) is highly integrated with nonvolatile memory and advanced features normally found in higher priced devices. These features include a battery switchover circuit for backup power, a time stamp to log power failures ...