24LC01B-E/ST

Memory IC Overview

The Microchip Technology 24LC01B-E/ST is a 1 Kbit Electrically Erasable PROM (EEPROM) organized as one block of 128 x 8-bit memory. It features a 2-wire serial interface compatible with I²C protocols and operates on a single supply voltage ranging from 2.5V to 5.5V. The device supports a maximum clock frequency of 400 kHz and utilizes low-power CMOS technology, ensuring standby current remains at or below 5 µA in extended temperature conditions. It is housed in an 8-lead TSSOP package and is qualified for operation across the extended industrial temperature range of -40°C to +125°C.

Memory IC Feature Summary

• Hardware write-protect capability via the WP pin allows complete inhibition of write operations when tied to VCC, while maintaining read access.
• Integrated Schmitt trigger inputs and filter circuits on SCL and SDA lines suppress noise spikes to ensure reliable data transmission on noisy buses.
• Supports page write operations utilizing an 8-byte page buffer, enabling efficient transfer of multiple data bytes before initiating the internal self-timed write cycle.
• Acknowledge polling feature allows the host device to monitor bus status during internal programming cycles by checking for ACK signals.

Memory IC Applications

• Embedded systems requiring non-volatile storage for configuration parameters
• Data logging applications needing durable memory for sensor readings
• Low-voltage portable devices utilizing I²C communication interfaces

Memory IC Procurement Notes

Verify that the ordering suffix matches the required temperature grade and package type. Confirm the specific revision level against the latest datasheet DS20001711M. Ensure compatibility with system voltage levels, noting the minimum operating voltage is 2.5V for this variant. Check for RoHS compliance status if environmental regulations apply to the final assembly.

Memory IC Selection Notes

Select this component when an I²C-compatible EEPROM with extended temperature performance is required. The 24LC01B series is distinct from the 24AA01 due to its higher minimum operating voltage of 2.5V compared to 1.7V. Consider the 8-byte page write buffer for applications involving frequent small data updates. Verify that the 400 kHz clock speed meets the system's bus timing requirements.

Memory IC Part Context

This part belongs to the 24XX01 family of 1 Kbit serial EEPROMs manufactured by Microchip Technology. The family includes variants like the 24AA01 and 24FC01, which differ primarily in operating voltage ranges and maximum clock frequencies. The 24LC01B specifically targets applications requiring robust operation within the 2.5V to 5.5V supply range.

Memory IC Replacement Considerations

The 24LC01B-I/ST serves as the industrial temperature grade equivalent within the same package. Cross-reference with other 1Kbit I²C EEPROMs only if voltage tolerances and interface timings align perfectly with system specifications.