RX-8731LC:B0 PURE SN

Real Time Clock Overview

The RX-8731LC:B0 PURE SN is a Real-Time Clock (RTC) integrated circuit manufactured by Epson. It provides clock/calendar functions via an I2C bus interface, supporting 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 1.7V to 5.5V and consumes a maximum current of 1.4µA at 3V or 1.5µA at 5V. It features an 80-byte EEPROM for data storage and includes alarm, leap year, and unique ID capabilities. The component is housed in a 12-TFSOJ surface-mount package with a width of 2.40mm and supports an operating temperature range of -40°C to 85°C.

Real Time Clock Feature Summary

• I2C Bus Interface for digital communication
• Integrated 80-byte EEPROM for non-volatile data storage
• Low power consumption: 1.4µA @ 3V / 1.5µA @ 5V
• Built-in Alarm function, Leap Year correction, and Unique ID

Real Time Clock Applications

• Portable electronic devices requiring precise timekeeping
• Industrial equipment needing RTC functionality with EEPROM
• Consumer electronics operating in wide temperature ranges

Real Time Clock Procurement Notes

Verify the specific suffix 'B0' against official Epson ToYoCom documentation, as availability may differ from similar variants like ':B3'. Confirm RoHS3 compliance and MSL Level 1 status for handling requirements. Check for obsolescence notices, as some RX-8731 variants have been discontinued.

Real Time Clock Selection Notes

Select this part when an I2C-compatible RTC with embedded memory is required. Ensure the system voltage falls within the 1.7V to 5.5V range. Verify that the 12-TFSOJ package dimensions fit the PCB layout constraints. Consider the 80-byte EEPROM capacity for application-specific data logging needs.

Real Time Clock Part Context

The RX-8731LC series belongs to Epson's family of I2C-bus interface real-time clock modules. These components are designed for applications requiring accurate timekeeping and data retention. The ':B0' suffix typically denotes a specific packaging or tape-and-reel configuration variant within the broader RX-8731LC product line.

Real Time Clock Replacement Considerations

Publicly confirmed direct substitute part numbers for the RX-8731LC:B0 are not available in the provided source material. Consult Epson ToYoCom for current cross-reference lists.