25LC010AT-E/OT

Overview

The Microchip Technology 25LC010AT-E/OT is a 1 Kbit Serial Electrically Erasable Programmable Read-Only Memory (EEPROM) utilizing an SPI-compatible serial bus. It features a 128 x 8-bit organization with a maximum clock frequency of 10 MHz. The device operates within a supply voltage range of 2.5 V to 5.5 V and supports an extended temperature range from -40°C to +125°C. It includes self-timed erase and write cycles, block write protection, and built-in power-on/off data protection.

Feature Summary

• Supports sequential read operations and page write mode for up to 16 bytes.
• Includes hardware write-protect pin and software-configurable block protection levels.
• Features hold functionality to pause serial communication without resetting the sequence.

Applications

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

Procurement Notes

Verify the specific suffix 'E' indicates automotive grade (-40°C to +125°C) and 'OT' denotes the SOT-23 package. Confirm RoHS compliance status and datasheet revision against manufacturing notices. Ensure the ordering part number matches the required voltage and temperature specifications.

Selection Notes

Select this component when an SPI interface is required for small non-volatile storage in high-temperature environments. The 1 Kbit capacity suits applications needing minimal footprint. Verify that the host microcontroller supports the necessary SPI modes and that the SOT-23 package fits the design constraints.

Part Context

This EEPROM belongs to the 25XX010A family, which shares identical electrical characteristics and instruction sets across various packages. The 'LC' designation specifies the 2.5 V minimum operating voltage, distinguishing it from the 'AA' variant which supports lower voltages down to 1.8 V.

Replacement Considerations

Compatible substitutes include other 25LC010A variants with different packages such as SOIC or TSSOP, provided the pinout remains compatible. Cross-referencing with the 25AA010A is possible if the application requires support for voltages below 2.5 V.