25LC010AT-E/SN

Overview

The Microchip Technology 25LC010AT-E/SN is a 1 Kbit (128 x 8) Serial Electrically Erasable Programmable Read-Only Memory (EEPROM). It operates within a supply voltage range of 2.5V to 5.5V and supports a maximum clock frequency of 10 MHz via an SPI-compatible serial bus. The device utilizes automotive-grade components, functioning reliably across a temperature range of -40°C to +125°C. It is housed in an 8-lead SOIC package.

Feature Summary

• Supports sequential read operations and page write modes with up to 16 bytes per cycle.
• Includes built-in hardware write protection mechanisms such as power-on/off data protection and a dedicated write-protect pin.
• Features a hold input that allows the host to pause serial communication without resetting the sequence.

Applications

• Microcontroller system configuration storage
• Calibration parameter persistence
• Data logging for industrial sensors

Procurement Notes

Verify the specific suffix 'E' confirms the automotive temperature grade (-40°C to +125°C) and the 'SN' indicates the 8-SOIC package. Confirm RoHS compliance status through official manufacturer documentation prior to finalizing procurement specifications.

Selection Notes

Select this component when high reliability and extended temperature operation are required. Ensure the application logic accommodates the 1-byte address space limitation inherent to the 1 Kbit capacity. Verify that the host microcontroller supports the required SPI protocol timing constraints.

Part Context

This part belongs to the 25LC010A series of 1 Kbit SPI EEPROMs. The 'E' suffix designates the automotive temperature grade variant, distinguishing it from the standard industrial grade 'I' version. It shares functional compatibility with other devices in the 25XX010A family regarding instruction sets and memory organization.

Replacement Considerations

The 25LC010AT-I/SN serves as a direct physical substitute but operates within the industrial temperature range (-40°C to +85°C) rather than the automotive range.

FAQ

How does the HOLD pin function during active communication?

The HOLD pin suspends transmission to the device while maintaining the current serial sequence state. Transitions on SI, SCK, and SO pins are ignored until the HOLD pin is released.

What happens if a page write crosses a physical page boundary?

If a page write attempts to cross a boundary, the data wraps around to the beginning of the current page, overwriting existing data instead of proceeding to the next page.