34LC02-E/SN

Overview

The Microchip Technology 34LC02-E/SN is a 2 Kbit (256 x 8-bit) serial EEPROM housed in an 8-lead SOIC package. It operates on a single supply voltage ranging from 1.7V to 5.5V and supports I²C-compatible 2-wire serial interfaces with clock frequencies up to 1 MHz. The device features permanent and resettable software write-protection for the lower half of the array, alongside hardware protection via the WP pin. It includes a 16-byte page write buffer, Schmitt trigger inputs for noise suppression, and output slope control to eliminate ground bounce.

Feature Summary

• Supports bidirectional 2-wire serial interface bus compatible with I²C protocols
• Features permanent and resettable software write-protection for the lower half of the memory array
• Includes hardware write-protection capability via the dedicated WP pin
• Equipped with Schmitt trigger inputs for improved noise suppression

Applications

• Data storage in low-voltage embedded systems
• Configuration parameter retention in industrial controllers
• Device identification and calibration data storage
• Secure data logging where write-protection is required

Procurement Notes

Verify that the specific suffix 'E' corresponds to the Automotive temperature range (-40°C to +125°C) as defined in the official datasheet selection table. Confirm the 'SN' designation matches the 8-lead SOIC package dimensions. Ensure the selected variant aligns with the required operating voltage and clock frequency specifications for the target application environment.

Selection Notes

Select this component when operation down to 1.7V is required or when high-speed 1 MHz communication is necessary. The 'E' suffix indicates suitability for extended automotive temperature ranges compared to the Industrial 'I' version. Consider the 16-byte page write buffer for efficient data writing and utilize the software write-protection features if data integrity for the lower memory addresses is critical.

Part Context

This part belongs to the 34XX02 family of 2 Kbit serial EEPROMs manufactured by Microchip Technology. The family includes variants like the 34AA02, which shares similar architecture but typically supports lower maximum clock frequencies. The 34LC02 specifically optimizes performance for higher speed applications while maintaining low power consumption across a broad voltage range.

Replacement Considerations

The 34LC02-I/SN serves as a direct functional substitute within the same package, differing primarily in the guaranteed operating temperature range.