25LC010AT-E/ST

Overview

The Microchip Technology 25LC010AT-E/ST is a 1 Kbit (128 x 8) Serial Electrically Erasable Programmable Read-Only Memory (EEPROM). It operates on an SPI-compatible serial bus with a maximum clock frequency of 10 MHz. The device supports a supply voltage range of 2.5 V to 5.5 V and features low-power CMOS technology. It includes hardware write protection, self-timed erase/write cycles up to 5 ms, and block write protection capabilities.

Feature Summary

• Supports sequential read operations and page write mode for up to 16 bytes per cycle.
• Includes built-in power-on/off data protection circuitry and a write enable latch.
• Features a dedicated Write-Protect (WP) pin for hardware-level array security.
• Provides a Hold (HOLD) input to pause serial communication without resetting the sequence.

Applications

• Microcontroller system configuration storage
• Calibration parameter persistence
• Embedded logging and data caching

Procurement Notes

Verify that the 'E' suffix confirms the automotive temperature grade (-40°C to +125°C) and the 'ST' suffix specifies the 8-lead SOT-23 package. Ensure the datasheet DS21832H is referenced for accurate electrical characteristics and timing diagrams corresponding to this specific variant.

Selection Notes

Select this component when a small non-volatile memory footprint is required alongside robust environmental tolerance. The 1 Kbit capacity suits applications needing minimal storage for settings or identifiers. The SOT-23 package offers a compact surface-mount solution suitable for space-constrained designs requiring high reliability.

Part Context

This part belongs to the 25LC010A family of 1 Kbit SPI EEPROMs from Microchip Technology. It shares architectural similarities with the 25AA010A but differs in minimum operating voltage requirements. The family provides standardized instruction sets and pinouts across various package options including SOIC, TSSOP, and DFN.

Replacement Considerations

Compatible substitutes include other 25LC010A variants such as 25LC010AT-I/SN or 25LC010AT-E/MSOP, provided the temperature range and package dimensions match the design constraints. Verify interface compatibility and voltage levels before substitution.