24FC256-I/MF

Memory IC Overview

The Microchip Technology 24FC256-I/MF is a 32K x 8 (256 Kbit) Serial Electrically Erasable PROM (EEPROM). It operates across a broad voltage range of 1.7V to 5.5V with a maximum clock frequency of 1 MHz at VCC ≥ 2.5V. The device features a two-wire I2C compatible interface, Schmitt trigger inputs for noise suppression, and hardware write protection via the WP pin. It supports page writes up to 64 bytes, offers data retention exceeding 200 years, and endures over one million erase/write cycles. Operating temperature range is -40°C to +85°C.

Memory IC Feature Summary

• Low-power CMOS technology with operation down to 1.7V
• Two-wire serial interface compatible with I2C protocol
• Hardware write-protect capability via dedicated pin
• Schmitt trigger inputs for enhanced noise suppression

Memory IC Applications

• Personal communications devices
• Data acquisition systems
• Industrial control applications requiring non-volatile storage

Memory IC Procurement Notes

Verify that the ordering suffix matches the required package type, specifically the 8-lead DFN configuration indicated by MF. Confirm the temperature grade corresponds to Industrial specifications (-40°C to +85°C). Ensure compatibility with the target system's I2C bus voltage levels and pull-up resistor requirements for reliable communication at the specified clock frequencies.

Memory IC Selection Notes

Select this component when high-speed I2C communication up to 1 MHz is required within the 1.7V to 5.5V supply range. It is suitable for designs needing robust noise immunity through Schmitt triggers and hardware-level write protection. Consider the 8-lead DFN package for compact surface-mount layouts where space constraints are critical compared to larger SOIC or TSSOP options.

Memory IC Part Context

This part belongs to the 24XX256 family of 256-Kbit Serial EEPROMs from Microchip Technology. It shares functional similarities with the 24AA256 and 24LC256 but distinguishes itself with support for higher clock speeds up to 1 MHz. The family utilizes a common I2C interface and memory architecture, allowing for flexible deployment across various low-power embedded memory applications.

Memory IC Replacement Considerations

Direct substitutes within the same family include the 24AA256-I/MF and 24LC256-I/MF. Note that the 24LC256 requires a minimum supply voltage of 2.5V, whereas the 24FC256 supports operation down to 1.7V. Verify that any replacement maintains the required 1 MHz clock speed specification if high-speed performance is essential.