RTC-4543SA:A ROHS

Real Time Clock Overview

The RTC-4543SA:A is a Real Time Clock (RTC) integrated circuit manufactured by Epson Timing. It operates within a supply voltage range of 2.5V to 5.5V and features a 14-pin SOP package. The device supports a 3-wire serial interface for communication. It provides clock/calendar functionality with HH:MM:SS time format and YY-MM-DD date format. The component is rated for an operating temperature range of -40°C to +85°C. Accuracy specifications indicate a tolerance of +/-23ppm under standard conditions.

Real Time Clock Feature Summary

• Integrated Real Time Clock with Calendar functionality
• 3-Wire Serial Interface for data access
• Operating Voltage Range: 2.5V to 5.5V
• Industrial Temperature Range: -40°C to +85°C

Real Time Clock Applications

• General purpose timing in embedded systems
• Data logging devices requiring timestamping
• Consumer electronics with real-time tracking needs

Real Time Clock Procurement Notes

This component is designated as End-of-Life (EOL). Manufacturers have issued discontinuance notifications, indicating that production will cease. Availability is restricted, and sourcing new units may be difficult. Verification of current stock status through authorized distributors is required before procurement planning.

Real Time Clock Selection Notes

Designers should consider the EOL status when selecting this part. Alternative components from the same family or competing manufacturers with similar pinouts and specifications should be evaluated. Ensure that the replacement supports the required 3-wire serial interface and voltage ranges to maintain compatibility with existing system designs.

Real Time Clock Part Context

The RTC-4543SA belongs to Epson's RTC-4543 series of real-time clock ICs. This series is designed for low-power applications requiring accurate timekeeping. The SA variant specifically denotes the package type and interface configuration. Related models include variations with different packaging or accuracy grades.