25LC320T-I/SN

Overview

The Microchip Technology 25LC320T-I/SN is a 32 Kbit (4096 x 8) serial Electrically Erasable PROM accessed via an SPI-compatible bus. It operates within a voltage range of 2.5 V to 5.5 V with a maximum clock frequency of 2 MHz. The device supports industrial temperatures from -40°C to +85°C and features self-timed write cycles of up to 5 ms. It includes block write protection, power-on data protection, and high reliability with over 1 million E/W cycles and greater than 200 years of data retention.

Feature Summary

• Supports sequential read operations and page writes of up to 32 bytes.
• Includes hardware write-protect pin and software-configurable block protection for the memory array.
• Features built-in power-on/off data protection circuitry and a write enable latch.

Applications

• Microcontroller system data storage
• Configuration parameter storage
• Calibration data retention

Procurement Notes

Verify that the specific suffix 'I' corresponds to the Industrial temperature range (-40°C to +85°C) and 'SN' indicates the SOIC-8 package. Confirm the 'T' designation matches the required tape-and-reel packaging format for your assembly process. Ensure the supply voltage meets the minimum 2.5 V requirement for this specific variant.

Selection Notes

Select this component when an SPI interface is required for non-volatile storage in industrial environments. It is suitable for applications needing moderate endurance and long-term data retention. Compare against the 25AA320 or 25C320 if different voltage ranges or clock speeds are necessary for the design.

Part Context

This part belongs to the 25XX320 family of 32 Kbit serial EEPROMs. It shares functional similarities with the 25AA320 and 25C320 but differs in operating voltage and speed specifications. The datasheet notes that this series is not recommended for new designs, suggesting consideration of newer alternatives like the 25LC320A.

Replacement Considerations

Public confirmed substitute part numbers: 25LC320T-E/SN, 25LC320T-I/ST, 25LC320-I/SN.