47L64-I/SN

Overview

The Microchip Technology 47L64-I/SN is a 64 Kbit Serial EERAM device featuring an SRAM memory core with hidden EEPROM backup. It offers unlimited endurance and operates within a voltage range of 2.7 V to 3.6 V. The component supports SPI interface communication with a maximum clock frequency of 1 MHz. It is housed in an 8-SOIC package and functions reliably across an industrial temperature range of -40°C to +85°C.

Feature Summary

• Combines high-speed SRAM performance with non-volatile EEPROM data retention
• Provides unlimited write endurance for the memory array
• Operates on a single low-voltage power supply

Applications

• Data logging systems requiring frequent writes
• Configuration storage in embedded controllers
• Industrial monitoring devices needing reliable non-volatile memory

Procurement Notes

Verify current availability status as the component may be subject to end-of-life notices or discontinuation by the manufacturer. Confirm that the specific suffix matches required environmental ratings and package dimensions. Ensure compatibility with existing SPI controller interfaces before procurement.

Selection Notes

Select this part when unlimited write endurance is critical, distinguishing it from standard EEPROMs. Verify that the 1 MHz SPI speed meets system timing requirements. Ensure the operating voltage range aligns with the target application's power supply rails.

Part Context

This component belongs to the 47L64 series of Serial EERAMs from Microchip Technology. It integrates SRAM speed with EEPROM persistence, offering a solution for applications demanding high reliability and extensive write cycles without the complexity of external battery backup circuits.

Replacement Considerations

Check for direct substitutes within the same EERAM family. Verify pinout and electrical specifications match exactly if considering alternative vendors.