47L16-I/SN

Overview

The Microchip Technology 47L16-I/SN is a serial EERAM (Electrically Erasable Random Access Memory) device featuring 16 Kbit of storage capacity. It integrates a standard SRAM array with non-volatile EEPROM backup, enabling infinite read/write cycles for the user-accessible memory while providing over 100,000 data retention backups. The component operates within an industrial temperature range and utilizes a serial peripheral interface for communication.

Feature Summary

• Provides infinite read/write cycles for the primary SRAM array combined with non-volatile data retention capabilities
• Automatically manages data transfer between volatile SRAM and non-volatile backup during power interruptions without external batteries
• Supports high-speed serial communication via SPI interface with Schmitt trigger inputs to suppress noise

Applications

• Data logging systems requiring reliable storage of changing data during random power loss events
• Black box monitoring applications in industrial environments
• Systems needing automatic data preservation upon unexpected power failure

Procurement Notes

Verify the specific package suffix 'SN' corresponds to the SOIC-8 footprint as defined in the official datasheet. Confirm that the 'I' designation aligns with the required industrial temperature operating range for your application environment before finalizing procurement specifications.

Selection Notes

Select this component when design requirements demand unlimited write endurance for frequently updated variables alongside non-volatile safety backups. It serves as a cost-effective alternative to FRAM or battery-backed NVSRAM solutions, particularly suitable for applications where data integrity during power outages is critical.

Part Context

This part belongs to the Microchip 47L series of serial EERAM devices. These components utilize CMOS technology to provide low-power operation and integrate voltage monitoring circuitry. The series is designed to replace traditional non-volatile memory solutions by combining the speed of SRAM with the retention of EEPROM.

Replacement Considerations

Consult official Microchip documentation for verified cross-reference part numbers. Ensure any substitute maintains compatibility with the SPI interface protocol and physical pinout configuration.