24LC08BH-I/SN

Memory IC Overview

The Microchip Technology 24LC08BH-I/SN is an 8 Kbit Electrically Erasable PROM organized as four blocks of 256 x 8-bit memory. It features a 2-Wire I2C compatible serial interface with a maximum clock frequency of 400 kHz for VCC between 2.5V and 5.5V. The device operates within a supply voltage range of 2.5V to 5.5V, drawing a maximum active current of 1 mA and standby current of 1 µA. It supports page writes up to 16 bytes with a typical cycle time of 3 ms. The component includes hardware write protection for the upper half-array (addresses 200h-3FFh) via the WP pin and offers data retention exceeding 200 years with over one million erase/write cycles.

Memory IC Feature Summary

• Hardware write protection locks the upper half of the memory array when the WP pin is tied high.
• Schmitt trigger inputs and noise filters suppress bus spikes to ensure reliable operation in noisy environments.
• Output slope control minimizes ground bounce during switching transitions.
• Acknowledge polling allows the master controller to monitor internal write cycle completion.

Memory IC Applications

• Industrial systems requiring non-volatile data storage
• Automotive electronic modules operating at elevated temperatures
• Consumer devices needing low-power configuration storage

Memory IC Procurement Notes

Verify the specific suffix 'I' confirms the industrial temperature grade (-40°C to +85°C). Confirm the '/SN' designation corresponds to the SOIC-8 package type. Ensure the 'BH' variant is selected specifically for the half-array write protection feature rather than standard variants. Cross-reference the datasheet revision date to confirm electrical characteristics match the design requirements.

Memory IC Selection Notes

Select this part when a dedicated hardware mechanism is required to protect critical data in the upper memory addresses from accidental modification. The 400 kHz clock speed supports higher throughput compared to legacy 100 kHz EEPROMs. Verify that the system power supply remains above 2.5V to utilize the full clock speed; otherwise, the interface defaults to 100 kHz compatibility.

Memory IC Part Context

This component belongs to the 24XX08H family of 8 Kbit serial EEPROMs manufactured by Microchip Technology. It shares architectural similarities with the 24AA08H but differs in minimum operating voltage specifications. The device utilizes a standard 8-pin surface mount footprint suitable for automated assembly processes.

Memory IC Replacement Considerations

Direct substitutes include other 24LC08B or 24LC08 variants from Microchip, provided they meet the voltage and package constraints. Verify that alternative parts support the same I2C addressing scheme and page buffer size if migrating designs.