ChipApex | Global Electronic Components Supplier
SEARCH
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：IC RTC CLK/CALENDAR I2C 8MSOP
- Series：-
- Package：Tape & Reel (TR),Cut Tape (CT)
- Mfr：Rohm Semiconductor
- Type：Clock/Calendar
- Features：Alarm, Leap Year
- Memory Size：-
- Time Format：HH:MM:SS (12/24 hr)
- Date Format：YY-MM-DD-dd
- Interface：I2C, 2-Wire Serial
- Voltage - Supply：1.8V ~ 5.5V
- Voltage - Supply, Battery：-
- Current - Timekeeping (Max)：1µA ~ 1.35µA @ 3V ~ 5.5V
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Surface Mount
- Package / Case：8-VSSOP, 8-MSOP (0.110", 2.80mm Width)
- Supplier Device Package：8-MSOP
Download product information
Overview
The BU9873FVM-GTTR is a Real-Time Clock (RTC) integrated circuit manufactured by ROHM Semiconductor. It features an I2C, 2-wire serial interface for communication with host processors. The device supports timekeeping in both 12-hour and 24-hour formats, along with calendar functions including year, month, day, and week data up to the year 2099 with automatic leap year recognition. It operates within a supply voltage range of 1.8 V to 5.5 V and maintains timekeeping at voltages as low as 1.45 V. The typical timekeeping current is 0.4 µA, with a maximum of 1.35 µA depending on the supply voltage. The component is housed in an 8-MSOP package and is designed for surface-mount installation.
Feature Summary
- I2C Bus Serial Interface for CPU connection
- High-Precision Oscillation Adjustment Circuit with ±30 second adjustment capability
- Built-in Oscillation Stabilizing Capacitors (CG, CD)
- Automatic Leap Year Recognition up to the Year 2099
Applications
- Devices requiring precise timekeeping via I2C interface
- Systems needing high-precision oscillation adjustment without external capacitors
- Applications utilizing 32.768 kHz clock output for synchronization
Procurement Notes
The BU9873FVM-GTTR is listed as an End-of-Life (EOL) product by ROHM Semiconductor. Distribution availability is limited, and customers should verify current stock status with authorized distributors. Due to its discontinued status, long-term supply cannot be guaranteed, and alternative sourcing strategies may be necessary for ongoing production needs.
Selection Notes
Select this component when an I2C-connected RTC with built-in stabilization capacitors is required. It is suitable for designs operating between 1.8 V and 5.5 V. Verify that the 8-MSOP package fits the PCB layout constraints. Consider the EOL status when planning for future manufacturing runs or maintenance cycles.
Part Context
This part belongs to the BU9873 family of real-time clocks from ROHM Semiconductor. Variants such as BU9873FVT-GE2 and BU9873FJ offer similar functionalities but differ in packaging (TSSOP-B-8, SOP-J8) and specific interface details. The BU9873FVM-GTTR specifically utilizes the 8-MSOP package format.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided documentation. Given the EOL status, engineers should evaluate other members of the BU9873 family or consult ROHM for recommended next-generation replacements.
