24AA256T-E/MF

Memory IC Overview

The Microchip Technology 24AA256T-E/MF is a 32K x 8 (256-Kbit) Serial Electrically Erasable PROM (EEPROM). It operates with a single supply voltage ranging from 1.7V to 5.5V and supports I2C compatible two-wire serial interface communication at maximum clock frequencies of 100 kHz for voltages below 2.5V, and 400 kHz for voltages between 2.5V and 5.5V. The device features a page write buffer capacity of up to 64 bytes, with a maximum page write time of 5 ms. It is housed in an 8-lead DFN package and is rated for extended temperature operation from -40°C to +125°C.

Memory IC Feature Summary

• Supports cascading up to eight devices on the same bus using hardware address inputs.
• Includes Schmitt trigger inputs for enhanced noise suppression and output slope control to eliminate ground bounce.
• Features a hardware write-protect pin that inhibits write operations when tied to VCC.
• Provides self-timed erase/write cycles with automatic end-of-write detection capabilities.

Memory IC Applications

• Personal communications systems requiring non-volatile data storage
• Data acquisition applications needing low-power memory solutions
• Industrial control systems operating across wide voltage ranges

Memory IC Procurement Notes

Verify the specific suffix 'MF' corresponds to the 8-lead DFN package configuration required for your design. Confirm the 'E' designation matches the extended temperature range specification (-40°C to +125°C). Ensure the 'T' indicates tape and reel packaging if automated assembly is planned. Cross-reference the RoHS compliance status with current environmental regulations applicable to your region before finalizing procurement.

Memory IC Selection Notes

Select this component when a 256-Kbit EEPROM is needed with support for low-voltage operation down to 1.7V. Choose this part over the 24LC256 variant if the application requires functionality below 2.5V. Consider the 8-lead DFN package for space-constrained surface-mount designs. Verify that the 400 kHz I2C speed meets the system's timing requirements at the intended operating voltage.

Memory IC Part Context

This device belongs to the 24XX256 family of serial EEPROMs manufactured by Microchip Technology. It shares functional similarities with the 24LC256 and 24FC256 models but differs in minimum operating voltage and maximum clock frequency specifications. The 24AA256 series is designed for advanced low-power applications, offering high endurance and long data retention characteristics suitable for demanding industrial environments.

Memory IC Replacement Considerations

The 24AA256T-I/MF serves as a direct replacement for lower temperature grade variants within the same package. For applications requiring higher clock speeds, the 24FC256 series may be considered, provided voltage levels are maintained above 2.5V. Ensure any substitute maintains the same 8-lead DFN footprint and I2C interface compatibility.