25LC020AT-E/MC

Overview

The Microchip Technology 25LC020AT-E/MC is a 2 Kbit (256 x 8-bit) 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. The device utilizes an SPI-compatible serial bus for communication, featuring sequential read capabilities and write page mode supporting up to 16 bytes per cycle. Internal write cycles are self-timed with a maximum duration of 5 ms. It is housed in an 8-lead DFN package and rated for industrial temperature ranges.

Feature Summary

• Supports high-speed SPI communication with a maximum clock frequency of 10 MHz
• Includes hardware write protection via the WP pin and software block protection settings
• Features low-power CMOS technology with standby current as low as 1 µA
• Provides data retention exceeding 200 years and endurance of 1,000,000 erase/write cycles

Applications

• Storing calibration parameters and configuration data in embedded systems
• Recording production batch numbers and device unique identifiers
• Maintaining simple fault logs or operational history in microcontroller projects

Procurement Notes

Verify that the ordering suffix 'MC' corresponds to the 8-lead 2x3 DFN package type. Confirm the 'E' designation indicates automotive temperature grade (-40°C to +125°C), which differs from the standard industrial grade. Ensure the datasheet DS21833G is referenced for accurate electrical characteristics and timing diagrams specific to this component variant.

Selection Notes

Select this part when a 2 Kbit non-volatile memory solution is required with robust write protection features. The 25LC020AT-E/MC is suitable for applications needing extended temperature operation compared to standard industrial grades. Consider the DFN package size constraints and ensure the host system supports SPI protocol with appropriate voltage levels between 2.5V and 5.5V.

Part Context

This component belongs to the 25XX020A family of serial EEPROMs manufactured by Microchip Technology. It shares identical memory arrays and instruction sets with the 25AA020A, differing primarily in operating voltage and temperature specifications. The family is designed for direct interface with popular microcontroller families, including PIC devices, offering a reliable storage solution for small data sets.

Replacement Considerations

The 25LC020A-I/MC serves as the industrial temperature grade equivalent. Cross-reference the 25AA020A series if lower voltage operation down to 1.8V is required, noting the package and temperature differences.