25LC320AT-I/MNY

Overview

The Microchip Technology 25LC320AT-I/MNY is a 32-Kbit Serial Electrically Erasable PROM featuring a 4096 x 8-bit organization. It utilizes an SPI-compatible serial bus with SCK, SI, SO, and CS signals for communication. The device supports a maximum clock frequency of 10 MHz at supply voltages between 4.5V and 5.5V. Operating voltage ranges from 2.5V to 5.5V, with standby current as low as 5 µA. It includes self-timed erase/write cycles of 5 ms maximum, block write protection, and data retention exceeding 200 years.

Feature Summary

• Supports high-speed SPI communication with up to 10 MHz clock frequency
• Includes hardware write-protect pin and software-configurable block protection
• Features built-in power-on/off data protection circuitry and write enable latch
• Provides hold functionality to pause serial transmission without resetting the sequence

Applications

• Microcontroller system data storage
• Configuration parameter retention
• Calibration value storage in industrial devices

Procurement Notes

Verify the specific suffix 'I' confirms Industrial temperature range (-40°C to +85°C) and 'MNY' denotes the 8-Lead TDFN package. Confirm the 'T' indicates tape and reel packaging. Ensure the source document matches DS20001828H for accurate electrical specifications. Cross-reference the manufacturer part number directly with official Microchip documentation to avoid counterfeit components.

Selection Notes

Select this component when an SPI interface is required for non-volatile memory applications. The 25LC320A variant specifically requires a minimum operating voltage of 2.5V, unlike the 25AA320A which supports 1.8V. Consider the 8-TDFN package for compact surface-mount designs. Verify that the application does not require extended temperature range beyond the Industrial grade limits.

Part Context

This part belongs to the 25XX320A family of 32-Kbit Serial EEPROMs. It shares functional similarities with the 25AA320A but differs in supply voltage requirements. The family supports multiple packages including MSOP, PDIP, SOIC, TDFN, and TSSOP. All variants offer identical memory organization and instruction sets.

Replacement Considerations

The 25AA320AT-I/MNY is a direct functional substitute within the same package and temperature grade, differing only in the supported voltage range.