34LC02T-E/SN

Overview

The Microchip Technology 34LC02T-E/SN is a 2 Kbit (256 x 8) serial EEPROM featuring an I²C-compatible interface. It operates on a single supply voltage ranging from 1.7V to 5.5V and supports clock frequencies up to 1 MHz. The device includes software write-protect capabilities for the lower half of the array and hardware protection via the WP pin. It utilizes low-power CMOS technology with standby current as low as 1 µA and offers data retention exceeding 200 years.

Feature Summary

• Features permanent and resettable software write-protection for the lower half of the memory array alongside external hardware write-protection for the entire device.
• Supports bidirectional two-wire serial communication compatible with standard I²C protocols, allowing cascading of up to eight devices.
• Incorporates Schmitt trigger inputs for noise suppression and output slope control to eliminate ground bounce during operation.

Applications

• Non-volatile data storage in industrial monitoring systems
• Configuration parameter retention in automotive electronic modules
• Device identification and calibration data storage in consumer electronics

Procurement Notes

Verify that the specific ordering suffix 'T' corresponds to the tape-and-reel packaging format required for automated assembly processes. Confirm that the '-E' designation aligns with the extended temperature range specifications (-40°C to +125°C) mandated by your application environment. Ensure compatibility with the 8-lead SOIC package dimensions for your PCB footprint design.

Selection Notes

Select this component when high-speed serial access up to 1 MHz is required compared to slower I²C EEPROM alternatives. Choose this part if the application demands robust write-protection mechanisms for critical data segments without sacrificing low standby power consumption. Ensure the system voltage remains within the 1.7V to 5.5V operational window to maintain reliable read and write cycles.

Part Context

This component belongs to the 34XX02 family of serial EEPROMs manufactured by Microchip Technology. It shares architectural similarities with the 34AA02 but distinguishes itself through higher clock frequency support. The device is designed for applications requiring reliable non-volatile storage with flexible protection schemes and low power consumption across varying temperature conditions.

Replacement Considerations

The 34LC02-I/SN serves as a functional substitute for applications operating within the industrial temperature range (-40°C to +85°C). Verify that the replacement part meets all electrical timing requirements and pinout configurations before integration into existing designs.