24FC01-E/SN

Memory IC Overview

The Microchip Technology 24FC01-E/SN is a 1 Kbit (128 x 8) serial EEPROM featuring an I2C-compatible 2-wire interface. It operates on a single supply voltage ranging from 1.7V to 5.5V and supports clock frequencies up to 1 MHz. The device utilizes low-power CMOS technology, ensuring active read currents of 1 mA maximum and standby currents of 3 µA maximum at extended temperatures. It includes an 8-byte page write buffer, hardware write protection via the WP pin, and Schmitt trigger inputs for noise suppression. The component is housed in an 8-lead SOIC package and is rated for operation between -40°C and +125°C.

Memory IC Feature Summary

• Supports high-speed 1 MHz I2C communication with output slope control to eliminate ground bounce.
• Features hardware write protection that inhibits all memory writes when the WP pin is tied to VCC.
• Includes an 8-byte page write buffer to optimize data transfer efficiency during programming cycles.
• Provides robust noise immunity through Schmitt trigger inputs and internal spike suppression filters.

Memory IC Applications

• Industrial systems requiring non-volatile data storage under extreme temperature conditions
• Embedded controllers needing configuration parameter retention
• Calibration data storage for sensor arrays
• Low-power portable devices operating on minimal supply voltages

Memory IC Procurement Notes

Verify the specific ordering suffix 'E' confirms the extended temperature range (-40°C to +125°C) and the 'SN' designation indicates the 8-lead SOIC package. Confirm RoHS compliance status as per the latest manufacturer documentation. Ensure the application circuit provides adequate pull-up resistors for the SDA and SCL lines to support the 1 MHz clock frequency requirements specified in the datasheet.

Memory IC Selection Notes

Select this part when system design requires operation below 2.5V or demands clock speeds exceeding 400 kHz. The extended temperature grade is necessary for environments where ambient temperatures exceed standard industrial limits. Compare against the 24LC01B if lower power consumption at higher voltages is prioritized over high-speed performance. Verify that the host microcontroller supports the required I2C protocol timing constraints.

Memory IC Part Context

This component belongs to the 24XX01 family of 1 Kbit serial EEPROMs manufactured by Microchip Technology. It shares functional similarities with the 24AA01 and 24LC01B but distinguishes itself through its ability to operate at 1 MHz clock rates and down to 1.7V supply voltage. The family utilizes a common block diagram and bus protocol, facilitating interchangeable design strategies across different speed and voltage requirements within embedded memory applications.

Memory IC Replacement Considerations

Public confirmed substitute part numbers: 24FC01-I/SN, 24FC01T-E/SN, 24FC01-E/MS.

Memory IC FAQ

How does the Write Protect (WP) pin function?

When the WP pin is connected to VCC, all write operations to the memory array are inhibited, providing hardware-level protection. When connected to VSS, normal read and write operations are enabled.

What happens if a page write crosses a physical page boundary?

If a page write command attempts to write across a physical page boundary, the data wraps around to the beginning of the current page, overwriting previously stored data, rather than proceeding to the next page.

Can the device be used for acknowledge polling?

Yes, the device does not generate acknowledge signals during an internal write cycle. Host devices can use this feature to poll the bus and determine when the write cycle is complete before initiating the next operation.