R2025S-E2-FE

Real Time Clock Overview

The R2025S-E2-FE is a CMOS Real-Time Clock (RTC) and calendar IC manufactured by Nisshinbo Micro Devices. It features a serial 2-wire I2C bus interface for data communication. The device operates within a supply voltage range of 1.7 V to 5.5 V and supports BCD format for both date and time registers. It includes functional capabilities such as alarm, calendar, clock, and timer interrupt generation. The component is housed in an SOP-14 surface-mount package and is rated for an operating temperature range from -40°C to +85°C.

Real Time Clock Feature Summary

• Serial 2-Wire I2C Bus Interface
• BCD Date and Time Format
• Alarm, Calendar, Clock, and Timer Interrupt Functions
• Operating Voltage Range: 1.7 V to 5.5 V

Real Time Clock Applications

• Real-time clock modules requiring low power consumption
• Systems utilizing I2C communication protocols
• Devices requiring calendar and alarm functionality

Real Time Clock Procurement Notes

Verify the current lifecycle status before procurement, as the source indicates this specific part may be discontinued or restricted in certain regions. Confirm availability through authorized distributors, noting that factory packaging quantities are typically 1000 units per reel. Ensure compatibility with the target system's I2C voltage levels and physical footprint requirements for the SOP-14 package.

Real Time Clock Selection Notes

Select the R2025S-E2-FE when a fixed-function RTC with I2C interface is required. Compare against the R2025D-E2-F variant if a smaller SON package is preferred. Ensure the application environment stays within the specified -40°C to +85°C temperature range. Verify that the system power supply remains stable between 1.7 V and 5.5 V during operation.

Real Time Clock Part Context

This component belongs to the R2025S series of real-time clocks from Nisshinbo Micro Devices. It is categorized under Clock & Timer ICs within the PMIC portfolio. The E2 suffix typically denotes specific manufacturing or revision codes, while FE indicates tape-and-reel packaging. It serves as a dedicated timing solution for embedded systems.

Real Time Clock Replacement Considerations

The R2025D-E2-F is listed as a related product in the same family, offering similar RTC functions but in a different package type (SON vs. SOP). No other direct cross-model substitutes are confirmed in the provided documentation.