Not Recommended for New Designs BU9873NUX
I²C BUS Serial Interface RTC with High-precision Oscillation Adjustment

This product cannot be used for new designs (Not recommended for design diversion).

Product Detail

 
Part Number | BU9873NUX-TTR
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

Design Resources

 

Technical Articles

Schematic Design & Verification

  • Importance of Probe Calibration When Measuring Power: Deskew
  • Impedance Characteristics of Bypass Capacitor

Thermal Design

  • Thermal Resistance

Tools

Simulations (Login Required)

  • Method for Exporting Circuit Data (ROHM Solution Simulator)

2D/3D/CAD

  • VSON008X2030 Footprint / Symbol

Packaging & Quality

Package Information

  • Anti-Whisker formation

Manufacturing Data

  • Factory Information

Environmental Data

  • UL94 Flame Classifications of Mold Compound
  • Compliance with the ELV directive
  • REACH SVHC Non-use Declaration
  • RoHS Comission Delegated Directive

Export Information

  • The Export Control Order
  • Export Administration Regulations(EAR)