34LC02T-E/MNY

Overview

The Microchip Technology 34LC02T-E/MNY is a 2 Kbit (256 x 8) serial EEPROM featuring an I²C-compatible 2-wire interface. It operates on a single supply voltage ranging from 1.7V to 5.5V, with a maximum clock frequency of 1 MHz for the LC version. The device supports page writes up to 16 bytes and includes permanent and resettable software write-protect features for the lower half of the array, alongside hardware protection via the WP pin. It is housed in an 8-lead TDFN package and rated for extended temperature ranges.

Feature Summary

• Supports high-speed 1 MHz clock operation within the specified voltage range
• Provides both permanent and resettable software write-protection for the lower memory half
• Includes hardware write-protection capability through the dedicated WP pin
• Features Schmitt trigger inputs and output slope control for noise suppression

Applications

• Data logging systems requiring non-volatile storage
• Configuration parameter storage in embedded controllers
• Calibration data retention in industrial sensors
• Device identification and serial number storage

Procurement Notes

Verify that the ordering suffix 'T' corresponds to tape-and-reel packaging and 'MNY' indicates the specific TDFN-8 variant. Confirm the 'E' suffix denotes the Automotive temperature grade (-40°C to +125°C). Ensure compatibility with the system's I²C bus voltage levels and check for RoHS compliance documentation prior to final procurement.

Selection Notes

Select this component when high-speed 1 MHz communication is required compared to standard 400 kHz EEPROMs. Choose the Automotive grade ('E') if the application demands operation up to +125°C. The TDFN package is suitable for space-constrained surface-mount designs. Consider the software write-protect features if partial array security is needed without additional hardware components.

Part Context

This part belongs to the 34AA02/34LC02 family of 2 Kbit serial EEPROMs. The 'LC' designation specifically enables 1 MHz clock speeds, distinguishing it from the 'AA' series which is limited to 400 kHz. The 'E' suffix identifies the automotive-grade temperature range, while 'I' would indicate the industrial range. The TDFN package offers a compact footprint for modern PCB layouts.

Replacement Considerations

Direct substitutes include other 34LC02 variants with different packages or temperature grades, such as 34LC02-I/SN for industrial use. Cross-brand replacements like M24C02 may require voltage level and speed verification. Ensure any replacement matches the 1 MHz speed requirement and TDFN-8 footprint if physical constraints are critical.