34LC02T-I/MS

Overview

The Microchip Technology 34LC02T-I/MS is a 2 Kbit (256 x 8) Electrically Erasable PROM featuring a 2-wire serial interface compatible with the I²C™ bus. It operates on a single supply ranging from 1.7V to 5.5V, supporting clock frequencies up to 1 MHz for LC versions and up to 400 kHz for AA versions. The device includes permanent and resettable software write-protect features for the lower half of the array, alongside hardware protection via the WP pin. It offers over one million erase/write cycles, data retention exceeding 200 years, and low-power CMOS technology with standby current as low as 100 nA.

Feature Summary

• Features permanent and resettable software write-protect capabilities for the lower half of the memory array, complemented by an external hardware write-protect pin for full array protection.
• Supports bidirectional 2-wire serial communication with Schmitt trigger inputs for noise suppression and output slope control to eliminate ground bounce.
• Incorporates a 16-byte page write buffer to facilitate efficient data transfer and self-timed erase/write cycles.

Applications

• Data storage in industrial systems requiring robust write-protection mechanisms
• Embedded applications needing low-power non-volatile memory operation
• Systems utilizing I²C-compatible serial interfaces for address and data logging

Procurement Notes

Verify the specific ordering suffix 'T' corresponds to the tape-and-reel packaging format required for your assembly process. Confirm that the 'I' temperature grade meets your operational environmental specifications. Ensure compatibility with the MSOP package dimensions during PCB layout design. Cross-reference the datasheet revision date to confirm all electrical characteristics align with your system requirements.

Selection Notes

Select this component when a small footprint EEPROM with flexible write-protection options is needed. The LC variant supports higher clock speeds compared to the AA series, suitable for faster bus transactions. Consider the MSOP package for space-constrained designs. Verify that the voltage range and interface speed match the master controller's capabilities.

Part Context

This part belongs to the 34AA02/34LC02 family of 2 Kbit serial EEPROMs. It shares functional similarities with other Microchip I²C EEPROMs but is distinguished by its specific clock frequency ratings and write-protection architecture. The family supports multiple package types including PDIP, SOIC, TSSOP, MSOP, TDFN, and SOT-23.

Replacement Considerations

Direct replacements within the same family include the 34AA02T-I/MS, which offers similar functionality but with a maximum clock frequency of 400 kHz instead of 1 MHz. Other 2 Kbit I²C EEPROMs from different manufacturers may require interface and voltage level verification.