RS5C338A-E2-FB

Real Time Clock Overview

The RS5C338A-E2-FB is a Real-Time Clock (RTC) IC manufactured by Nisshinbo Micro Devices. It features a 3-wire serial interface and includes a voltage monitoring function. The device operates within a supply voltage range of 2 V to 5.5 V and supports BCD format for both date and time data. It provides 16 bytes of storage capacity and utilizes backup switching for continuous operation. The component is housed in an SSOP-10 package, suitable for surface mount installation, and functions within a temperature range of -40°C to +85°C.

Real Time Clock Feature Summary

• 3-Wire Serial Interface for communication
• Integrated Voltage Monitoring Function
• Backup Switching capability for uninterrupted timekeeping
• BCD Date and Time Format with 16 Bytes Storage

Real Time Clock Applications

• General electronic equipment requiring timekeeping
• Computer peripheral devices
• Consumer electronics with battery backup needs

Real Time Clock Procurement Notes

This specific part number variant is identified as End-of-Life (EOL). Manufacturers have issued discontinuation notifications indicating that production will cease. Verification of current stock availability from authorized distributors is required before procurement planning. Alternative sourcing strategies should be considered due to the limited remaining supply chain support.

Real Time Clock Selection Notes

Designers must account for the EOL status when selecting this component for new products. The SSOP-10 package requires appropriate PCB footprint design for surface mount technology. Ensure the system power supply remains within the 2 V to 5.5 V operating range. Verify compatibility with the 3-wire serial protocol used by the host microcontroller for accurate data exchange.

Real Time Clock Part Context

The RS5C338A belongs to the RS5C338 series of real-time clock ICs. This family is characterized by low power consumption and integrated voltage detection circuits. The manufacturer, originally Ricoh Company Ltd., has transferred these product lines to Nisshinbo Micro Devices. The series is designed for general-purpose applications where reliable timekeeping and voltage supervision are necessary.

Real Time Clock Replacement Considerations

Due to the End-of-Life status, direct substitutes may be scarce. Engineers should consult official replacement guides or contact Nisshinbo Micro Devices for recommended alternative components that maintain similar pinouts and functional specifications.