24LC01B-E/MS

Memory IC Overview

The Microchip Technology 24LC01B-E/MS is a 1 Kbit (128 x 8) Electrically Erasable PROM featuring a 2-wire I2C serial interface. It operates within a supply voltage range of 2.5V to 5.5V and supports clock frequencies up to 400 kHz. The device utilizes low-power CMOS technology, providing an active read current of 1 mA maximum and standby current of 5 µA maximum at extended temperatures. It includes hardware write protection via the WP pin, an 8-byte page write buffer, and Schmitt trigger inputs for noise suppression. The component is housed in an 8-lead MSOP package and is rated for operation from -40°C to +125°C.

Memory IC Feature Summary

• Hardware write protection capability via the WP pin allows inhibition of write operations across the entire memory array when tied to VCC.
• Integrated 8-byte page write buffer enables efficient data transfer by storing multiple bytes before initiating an internal self-timed write cycle.
• Schmitt trigger inputs with filter circuits on SDA and SCL lines suppress noise spikes to ensure reliable communication on noisy buses.

Memory IC Applications

• Microcontroller external non-volatile memory storage
• Configuration parameter retention
• System status logging

Memory IC Procurement Notes

Verify that the ordering suffix 'E' corresponds to the Extended temperature range (-40°C to +125°C) and 'MS' indicates the 8-lead MSOP package. Confirm RoHS compliance status as specified in the manufacturer's documentation. Ensure the application circuit provides appropriate pull-up resistors for the I2C bus lines according to the operating frequency requirements.

Memory IC Selection Notes

Select this part for applications requiring extended industrial temperature ranges and low-voltage operation starting at 2.5V. It is suitable for systems needing hardware-level write protection and high endurance. Compare against the 24AA01 variant if lower voltage operation down to 1.7V is required, or the 24FC01 if higher speed interfaces are necessary.

Memory IC Part Context

This component belongs to the 24XX01 family of 1 Kbit I2C Serial EEPROMs manufactured by Microchip Technology. The family includes variants such as the 24AA01 and 24FC01, which share similar architectural features but differ in voltage ranges and maximum clock speeds. The 24LC01B specifically targets standard 2.5V to 5.5V supply environments.

Memory IC Replacement Considerations

The 24LC01B-I/ST serves as a functional substitute within the same series, differing primarily in the Industrial temperature grade (-40°C to +85°C) and TSSOP packaging instead of MSOP.