24LC256-I/MF

Memory IC Overview

The Microchip Technology 24LC256-I/MF is a 32K x 8 (256 Kbit) Serial Electrically Erasable PROM (EEPROM). It operates within a voltage range of 2.5V to 5.5V and supports a maximum clock frequency of 400 kHz via an I²C compatible two-wire serial interface. The device features a 64-byte page write buffer, hardware write-protect capability, and Schmitt trigger inputs for noise suppression. It provides over 1,000,000 erase/write cycles and data retention exceeding 200 years. The component is housed in an 8-lead DFN package and is rated for industrial temperature operation from -40°C to +85°C.

Memory IC Feature Summary

• Supports bidirectional two-wire serial communication with up to 400 kHz clock frequency
• Includes a 64-byte page write buffer for efficient data transfer
• Features hardware write protection controlled by the WP pin
• Provides high ESD protection exceeding 4000V on all pins

Memory IC Applications

• Personal communications devices requiring non-volatile storage
• Data acquisition systems needing reliable parameter retention
• Industrial control applications operating within specified voltage ranges

Memory IC Procurement Notes

Verify that the ordering suffix matches the required package type and temperature grade. Confirm RoHS compliance status as per current manufacturing standards. Ensure the specific variant aligns with system voltage requirements, noting that this model requires a minimum supply voltage of 2.5V. Check for any recent Product Change Notifications regarding packaging or assembly site changes.

Memory IC Selection Notes

Select this component when a 256 Kbit EEPROM with I²C interface is required. Ensure the application voltage remains above 2.5V, as lower voltages may restrict clock speed or functionality compared to the 24AA256 variant. Consider the DFN package dimensions for PCB layout constraints. Verify that the bus capacitance limits are respected for the desired clock frequency.

Memory IC Part Context

This part belongs to the 24XX256 family of serial EEPROMs manufactured by Microchip Technology. It shares functional similarities with the 24AA256 and 24FC256 but differs in voltage range and maximum clock speed specifications. The 'I' designation indicates industrial temperature rating, while 'MF' specifies the 8-lead DFN package configuration.

Memory IC Replacement Considerations

The 24LC256-E/MF serves as a direct replacement offering extended temperature range capabilities (-40°C to +125°C). Other variants within the 24LC256 series may be considered if different package types such as SOIC or MSOP are preferred for the design.