25AA020AT-I/MC

Memory IC Overview

The Microchip Technology 25AA020AT-I/MC is a 2 Kbit (256 x 8-bit) Serial Electrically Erasable Programmable Read-Only Memory (EEPROM). It features a 1.8V to 5.5V supply voltage range and supports a maximum clock frequency of 10 MHz via an SPI-compatible serial bus. The device utilizes low-power CMOS technology with a standby current of 5 µA at 5.5V. It offers high reliability, including 1,000,000 erase/write cycle endurance and data retention exceeding 200 years. The component operates within an industrial temperature range of -40°C to +85°C and is housed in an 8-lead DFN/TDFN package.

Memory IC Feature Summary

• Supports sequential read operations and page write modes accommodating 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.

Memory IC Applications

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

Memory IC Procurement Notes

Verify the specific suffix 'MC' corresponds to the 8-lead DFN/TDFN package type required for your layout. Confirm the 'I' designation matches the industrial temperature range specifications for your operating environment. Ensure the 'T' indicates tape-and-reel packaging if automated assembly is planned. Cross-reference the datasheet revision to confirm compatibility with existing firmware drivers.

Memory IC Selection Notes

Select this part when a wide 1.8V to 5.5V supply range is necessary for low-voltage operation. Choose this model over the 25LC020A variant if system requirements mandate operation below 2.5V. Consider the DFN/TDFN package for compact surface-mount designs requiring small footprint solutions. Verify that the SPI interface timing constraints align with the master controller's capabilities.

Memory IC Part Context

This component belongs to the 25XX020A family of 2 Kbit SPI EEPROMs manufactured by Microchip Technology. It shares identical memory architecture and instruction sets with the 25LC020A, differing primarily in the minimum operating voltage threshold. The family provides non-volatile storage solutions for applications requiring frequent data updates with high endurance characteristics.

Memory IC Replacement Considerations

The 25LC020AT-I/MC serves as a direct functional substitute, provided the application voltage remains above 2.5V. Other packages within the same electrical specification, such as MSOP or TSSOP variants, may replace this unit if mechanical constraints allow.