24FC256T-I/MNY

Memory IC Overview

The Microchip Technology 24FC256T-I/MNY 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 and supports a maximum clock frequency of 1 MHz at VCC ≥ 2.5V. The device utilizes a two-wire I2C compatible serial interface and features a 64-byte page write buffer with a maximum write cycle time of 5 ms. It is housed in an 8-lead TDFN package and is rated for industrial temperature ranges from -40°C to +85°C.

Memory IC Feature Summary

• Supports high-speed operation up to 1 MHz when powered by voltages of 2.5V or higher.
• Includes a 64-byte page write buffer to optimize data writing efficiency.
• Features hardware write protection via the WP pin to secure memory arrays.
• Provides Schmitt trigger inputs on SDA and SCL lines for enhanced noise suppression.

Memory IC Applications

• Personal communications devices requiring low-power non-volatile storage
• Data acquisition systems needing reliable parameter retention
• Embedded controllers utilizing I2C bus architectures

Memory IC Procurement Notes

Verify that the specific ordering suffix 'MNY' corresponds to the 8-lead TDFN package configuration as listed in the official Device Selection Table. Confirm the 'I' designation indicates the Industrial temperature range (-40°C to +85°C). Ensure the supply voltage meets the minimum threshold of 1.7V for full functionality, noting that clock frequency specifications vary based on the applied VCC level.

Memory IC Selection Notes

Select this component when a 256 Kbit EEPROM is required with high-speed 1 MHz I2C compatibility. It is suitable for designs operating between 1.7V and 5.5V where low standby current is critical. Choose this part over the 24LC256 if operation below 2.5V is necessary, as the 24LC256 requires a minimum of 2.5V. Ensure the application board space accommodates the TDFN package dimensions.

Memory IC Part Context

This device belongs to the 24XX256 family, which includes the 24AA256 and 24LC256 variants. While all share similar architecture and capacity, the 24FC256 is distinguished by its support for 1 MHz clock speeds at higher voltages and its ability to operate down to 1.7V. The family offers multiple package options, including DIP, SOIC, MSOP, and TDFN, allowing flexibility in PCB layout and thermal management strategies.

Memory IC Replacement Considerations

The 24AA256 and 24LC256 are functionally similar within the same family but differ in voltage ranges and maximum clock frequencies. Verify package compatibility when substituting, as the MNY suffix specifically denotes the TDFN form factor. Other packages such as MF, MS, P, SN, SM, ST, and OT are available within the 24FC256 lineup.