24LC02BH-E/ST

Memory IC Overview

The Microchip Technology 24LC02BH-E/ST is a 2 Kbit (256 x 8) serial EEPROM featuring an I2C-compatible two-wire interface. It operates on a single supply voltage ranging from 2.5V to 5.5V and supports clock frequencies up to 400 kHz. The device includes hardware write protection for the upper half of the memory array (addresses 80h-FFh) via the WP pin. It utilizes low-power CMOS technology with a maximum read current of 1 mA and standby current of 1 µA. The component is housed in an 8-lead TSSOP package and is rated for extended industrial temperature operation from -40°C to +125°C.

Memory IC Feature Summary

• Hardware write protection mechanism inhibits write operations to the upper half of the memory array when the WP pin is tied high.
• Integrated Schmitt trigger inputs and noise filter circuits suppress bus spikes to ensure reliable data transmission.
• Supports page write operations utilizing an 8-byte buffer to improve bus throughput efficiency.
• Includes acknowledge polling capability to allow the host to determine when internal write cycles are complete.

Memory IC Applications

• Non-volatile data storage in embedded systems requiring configuration retention
• Parameter logging in industrial monitoring equipment
• Calibration data storage for sensor interfaces
• Device identification and serial number storage in consumer electronics

Memory IC Procurement Notes

Verify that the ordering suffix corresponds to the TSSOP-8 package type and Extended temperature grade. Confirm the specific revision level matches the design requirements, as datasheet revisions may update electrical characteristics or packaging dimensions. Ensure compatibility with the system's I2C bus voltage levels and pull-up resistor configurations before finalizing procurement.

Memory IC Selection Notes

Select this component when a 2 Kbit non-volatile memory solution is required with hardware-level write protection for critical data segments. It is suitable for designs operating within the 2.5V to 5.5V range where low standby power consumption is necessary. The extended temperature rating makes it appropriate for harsh industrial environments compared to standard commercial grade alternatives.

Memory IC Part Context

This part belongs to the 24XX02H family of serial EEPROMs, which share a common architecture but differ in voltage ranges and temperature grades. The 'L' designation indicates low-voltage operation starting at 1.7V, while 'C' denotes standard commercial voltage starting at 2.5V. The 'E' suffix specifies the extended temperature range, distinguishing it from the industrial 'I' grade variant.

Memory IC Replacement Considerations

The 24LC02B series serves as a functional substitute, offering identical memory organization and interface protocols. When replacing, verify that the alternative part meets the required extended temperature specifications and physical package dimensions to ensure mechanical compatibility.