47L64T-I/MNY

Overview

The Microchip Technology 47L64T-I/MNY is a 64-kbit I2C EERAM device featuring an SRAM memory core with hidden EEPROM backup. It offers a memory organization of 8 k x 8 bits and supports a maximum clock frequency of 1 MHz. The component operates within a voltage range of 2.5 V to 5.5 V, with an access time of 550 ns. It is housed in an 8-TDFN (2x3 mm) 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 through automatic background backup mechanisms.
• Supports standard I2C two-wire serial interface protocols for efficient communication with host microcontrollers.
• Provides robust data protection by preserving critical information during power transitions without user intervention.

Applications

• Data logging systems requiring frequent write cycles with long-term retention
• Configuration storage in embedded controllers needing rapid access speeds
• Industrial control units operating in environments with unstable power supplies

Procurement Notes

Verify the specific suffix 'I/MNY' against official Microchip documentation to confirm the industrial temperature grade and TDFN-8 package variant. Ensure compatibility with your system's I2C bus voltage levels, as the device supports a wide supply range. Confirm that the 1 MHz clock speed aligns with your controller's timing requirements. Check for any recent product change notices regarding pinout or electrical characteristics before finalizing procurement.

Selection Notes

Select this component when application demands exceed the endurance limits of traditional EEPROM but require non-volatility. It is suitable for designs needing faster write access than flash-based solutions while maintaining data integrity over power cycles. Consider the 8-TDFN package constraints for PCB layout. Evaluate if the I2C interface latency meets real-time processing needs compared to parallel alternatives.

Part Context

This part belongs to the 47L64 family of Serial EERAM devices from Microchip Technology. These components bridge the gap between volatile SRAM and non-volatile EEPROM by integrating both technologies on a single die. The family is designed for applications requiring high endurance and fast access times, distinguishing it from standard serial EEPROM series like the 24LC or 24AA lines which lack the SRAM core.

Replacement Considerations

Direct substitutes include other 64-kbit I2C EERAM parts from Microchip, such as the 47L64-I/SN in SOIC packaging. Cross-brand replacements may require interface and voltage level verification. Ensure any alternative maintains the 1 MHz clock capability and similar physical footprint if space is constrained.