34LC02T-E/OT

Overview

The Microchip Technology 34LC02T-E/OT is a 2 Kbit (256 x 8) serial EEPROM utilizing an I²C-compatible 2-Wire Serial Interface. It operates on a single supply voltage ranging from 2.2V to 5.5V and supports clock frequencies up to 1 MHz. The device features a 16-byte page write buffer, self-timed erase/write cycles with a typical duration of 3 ms, and high endurance exceeding one million write cycles. Data retention is specified at over 200 years. It includes permanent and resettable software write protection for the lower half of the array and hardware write protection via the WP pin. The component is housed in a 6-lead SOT-23 package and is rated for extended industrial temperature ranges.

Feature Summary

• Features dual software write-protection mechanisms allowing selective or permanent locking of the lower memory half.

Applications

• Data storage in battery-powered systems requiring low standby current
• Configuration parameter storage in embedded controllers
• Calibration data retention in industrial instrumentation

Procurement Notes

Verify that the ordering suffix 'E' corresponds to the Automotive temperature range (-40°C to +125°C) as defined in the official datasheet. Confirm the 'T' suffix indicates tape-and-reel packaging suitable for automated surface-mount assembly. Ensure the specific variant matches the required voltage and interface specifications for the target application design.

Selection Notes

Select this part when high-speed 1 MHz I²C communication is required alongside robust write protection capabilities. The automotive temperature grade ensures reliability in harsh environments. Consider the SOT-23 package size constraints and the availability of software-based versus hardware-based write protection strategies for the specific memory access requirements.

Part Context

This component belongs to the 34XX02 family of 2-Kbit serial EEPROMs manufactured by Microchip Technology. It shares functional similarities with the 34AA02 but offers higher clock speed compatibility. The family provides non-volatile memory solutions with flexible addressing and multiple package options for diverse system integration needs.

Replacement Considerations

Compatible substitutes within the same family include the 34LC02-I/SN for industrial temperature grades and the 34AA02 series for standard voltage operation. Verify package compatibility and electrical characteristics before substitution.