25AA128T-I/MF

Memory IC Overview

The Microchip Technology 25AA128T-I/MF is a 128 Kbit (16,384 x 8-bit) Serial Electrically Erasable PROM accessed via an SPI-compatible bus. It operates with a supply voltage range of 1.8V to 5.5V and supports clock frequencies up to 10 MHz at 4.5V-5.5V. The device features a 64-byte page size, self-timed write cycles of 5 ms maximum, and industrial temperature range (-40°C to +85°C). It is housed in an 8-lead DFN package.

Memory IC Feature Summary

• Supports high-speed serial communication via SPI interface with hold functionality for interrupt servicing
• Includes hardware write protection via WP pin and software block protection for array segments
• Features built-in power-on/off data protection and write enable latch mechanisms

Memory IC Applications

• Microcontroller system data storage
• Configuration parameter retention
• Calibration data logging

Memory IC Procurement Notes

Verify the 'I' suffix confirms the Industrial temperature range (-40°C to +85°C) and the '/MF' suffix denotes the 8-lead DFN package. Confirm RoHS compliance status matches project requirements. Ensure the specific lot date code aligns with manufacturing availability constraints.

Memory IC Selection Notes

Select this component when SPI interface compatibility is required alongside low-power operation down to 1.8V. The Industrial grade rating suits environments requiring stability between -40°C and +85°C. Consider the DFN package for space-constrained PCB layouts compared to PDIP or SOIC options.

Memory IC Part Context

This part belongs to the 25XX128 family of 128 Kbit SPI Serial EEPROMs. It shares architectural similarities with the 25LC128 but differs in minimum operating voltage, supporting 1.8V compared to the 25LC128's 2.5V minimum. Both variants utilize identical pinouts and instruction sets.

Memory IC Replacement Considerations

The 25LC128T-I/MF serves as a direct functional substitute, provided the application voltage does not drop below 2.5V. Other 25XX128 variants with different package codes may replace this unit if physical footprint adjustments are permissible.