25LC320T/SN

Overview

The Microchip Technology 25LC320T/SN is a 32 Kbit (4096 x 8) serial Electrically Erasable PROM. It utilizes an SPI-compatible interface with a maximum clock frequency of 2 MHz and operates within a voltage range of 2.5 V to 5.5 V. The device features a 32-byte page write capability, self-timed erase/write cycles, and block write protection. It supports industrial temperature ranges (-40°C to +85°C), offers high reliability with over 1 million E/W cycles and data retention exceeding 200 years, and is housed in an 8-pin SOIC package.

Feature Summary

• Supports Serial Peripheral Interface (SPI) communication with hold functionality for bus pausing
• Includes hardware and software write protection mechanisms with block-level control
• Features built-in power-on data protection and write enable latch logic

Applications

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

Procurement Notes

Verify the specific suffix 'T' against official documentation to confirm tape-and-reel packaging status. Confirm that the 'SN' designation corresponds to the 8-lead SOIC package. Ensure the component meets the required industrial temperature specifications and voltage operating ranges for your application design.

Selection Notes

Select this component when a 32 Kbit non-volatile memory solution with SPI compatibility is required. It is suitable for applications needing moderate endurance and long-term data retention. Consider the 8-pin SOIC package constraints and verify that the 2 MHz clock speed aligns with the host controller's capabilities.

Part Context

This part belongs to the 25XX320 family of serial EEPROMs from Microchip Technology. It shares architectural similarities with the 25AA320 and 25C320 variants but is optimized for the 2.5 V to 5.5 V supply range. The datasheet notes that newer designs should consider the 25LC320A series as the original version is not recommended for new designs.

Replacement Considerations

The 25LC320A-I/SN is the recommended successor for new designs. Verify pinout compatibility and electrical characteristics before substitution.