RX-8025NB:AA

Real Time Clock Overview

The RX-8025NB:AA is a Real-Time Clock (RTC) IC manufactured by Epson Timing, belonging to the RX-8025SA family. It features an I2C bus interface for communication and supports date formats of YY-MM-DD-dd and time formats of HH:MM:SS in 24-hour mode. The device operates within a supply voltage range of 1.7 V to 5.5 V and functions reliably across a temperature range of -40°C to +85°C. It is housed in a 14-SOP surface-mount package with a width of 5.00 mm. Key functional capabilities include alarm generation, calendar tracking, clock timing, timer interrupts, and watchdog timekeeping.

Real Time Clock Feature Summary

• I2C Bus Interface: Utilizes a 2-wire serial interface for data exchange.
• Wide Voltage Operation: Supports power supply voltages from 1.7 V to 5.5 V.
• Integrated Functions: Includes alarm, calendar, clock, timer interrupt, and watchdog timekeeper features.
• Industrial Temperature Range: Rated for operation between -40°C and +85°C.

Real Time Clock Applications

• Data logging systems requiring precise timestamping
• Embedded controllers needing backup timekeeping
• Industrial equipment monitoring

Real Time Clock Procurement Notes

Verify the specific suffix 'NB' against official Epson documentation to confirm pinout and electrical characteristics, as variations exist within the RX-8025 series. Confirm RoHS compliance status through the manufacturer's current datasheet or component declaration documents before integration into regulated assemblies.

Real Time Clock Selection Notes

Select this component when an I2C-compatible RTC with a wide operating voltage range is required. Ensure the host microcontroller supports the I2C protocol and that the 14-SOP package dimensions fit the PCB layout constraints. Verify that the internal oscillator accuracy meets the system's timing requirements without external compensation.

Real Time Clock Part Context

This part belongs to the Epson RX-8025SA series of real-time clocks. The RX-8025SA family provides low-power timekeeping solutions with integrated calendar and alarm functions. The NB suffix typically denotes specific packaging or environmental compliance variants within the broader product line, sharing core functionality with other SA-series members.

Real Time Clock Replacement Considerations

Publicly confirmed substitute part numbers for the RX-8025NB:AA are not available in the provided source material. Cross-referencing with similar I2C RTCs requires careful verification of pin compatibility and register maps.