24LC02B/SN

Memory IC Overview

The Microchip Technology 24LC02B/SN is a 2-Kbit (256 x 8) serial EEPROM featuring an I2C-compatible two-wire interface. It operates within a voltage range of 2.5V to 5.5V and supports clock frequencies up to 400 kHz. The device utilizes low-power CMOS technology with a maximum active read current of 1 mA and standby current of 5 µA 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 offers data retention exceeding 200 years.

Memory IC Feature Summary

• Supports bidirectional data transfer using a standard two-wire serial bus protocol compatible with I2C.
• Features hardware write protection that inhibits all write operations when the WP pin is tied to VCC.
• Includes an 8-byte page write buffer to allow sequential data storage without repeated start conditions.
• Provides high ESD protection levels on all pins to ensure reliability in noisy environments.

Memory IC Applications

• Non-volatile data storage for system configuration parameters
• Calibration value retention in industrial control systems
• Device identification and security code storage
• Parameter logging in automotive electronic modules

Memory IC Procurement Notes

Verify the specific suffix 'SN' corresponds to the 8-lead SOIC package type as documented. Confirm the temperature grade matches the required operational environment, as the base part number covers both Industrial and Extended ranges. Ensure the ordering suffix aligns exactly with the desired voltage and thermal specifications before finalizing procurement.

Memory IC Selection Notes

Select this component for applications requiring non-volatile memory with a simple two-wire interface. The 24LC02B/SN is suitable for designs operating between 2.5V and 5.5V. Consider the 8-byte page write capability for efficient data updates. Verify that the 400 kHz clock speed meets the system's communication timing requirements.

Memory IC Part Context

This device belongs to the 24XX02 family of serial EEPROMs from Microchip Technology. It shares architectural similarities with the 24AA02 and 24FC02 but differs in minimum operating voltage and maximum clock frequency. The 24LC02B specifically targets applications requiring operation down to 2.5V, distinguishing it from lower-voltage or higher-speed variants within the same product line.

Memory IC Replacement Considerations

Direct replacements include other 24LC02B variants with different packages such as MSOP or TSSOP, provided the pinout remains compatible. Cross-referencing with 24AA02 or 24FC02 requires verification of voltage compatibility and clock speed limitations.