25LC010A-I/ST

Overview

The Microchip Technology 25LC010A-I/ST 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 at voltages between 4.5V and 5.5V. The device utilizes an SPI-compatible serial interface with separate data in and out lines. It features low-power CMOS technology, offering standby current as low as 1 µA. The component is housed in an 8-lead TSSOP package and is rated for industrial temperature operation from -40°C to +85°C.

Feature Summary

• Supports write page mode allowing up to 16 bytes per cycle
• Includes built-in hardware write protection via dedicated pin
• Features power-on/off data protection circuitry
• Provides block write protection for specific array segments

Applications

• Microcontroller system configuration storage
• Calibration parameter retention
• Data logging applications requiring non-volatile memory

Procurement Notes

Verify the ordering suffix 'I' confirms the Industrial temperature grade (-40°C to +85°C) and 'ST' indicates the 8-lead TSSOP package. Confirm the 'LC' prefix specifies the 2.5V minimum operating voltage requirement. Ensure the datasheet revision matches the required specifications for your design.

Selection Notes

Select this component when a 1 Kbit capacity is sufficient for application needs. The 2.5V minimum voltage rating distinguishes it from lower-voltage variants. The TSSOP package is suitable for surface-mount assembly processes. Verify that the host microcontroller supports the required SPI protocol and timing constraints for reliable communication.

Part Context

This part belongs to the 25LC010A series of 1 Kbit SPI EEPROMs manufactured by Microchip Technology. It shares functional similarities with the 25AA010A but differs in its minimum operating voltage requirements. The series is designed for general-purpose non-volatile data storage in embedded systems requiring high reliability and endurance.

Replacement Considerations

Direct substitutes include other 25LC010A variants with different packages or temperature grades, such as 25LC010A-I/P or 25LC010A-E/ST. Cross-brand replacements require verification of pin compatibility and electrical characteristics.