34LC02-I/MS

Overview

The Microchip Technology 34LC02-I/MS is a 2 Kbit (256 x 8) serial EEPROM housed in an 8-lead MSOP package. It operates on a single supply voltage ranging from 2.2V to 5.5V and supports a maximum clock frequency of 1 MHz via a 2-Wire I²C compatible interface. The device features industrial temperature ratings from -40°C to +85°C, typical standby current of 1 µA, and endurance exceeding one million erase/write cycles with data retention over 200 years.

Feature Summary

• Supports permanent and resettable software write-protection for the lower half of the memory array alongside hardware protection for the entire array.
• Features Schmitt trigger inputs and output slope control to suppress noise and eliminate ground bounce during operation.
• Includes a 16-byte page write buffer to facilitate efficient sequential data writing operations.

Applications

• Data logging applications requiring non-volatile storage of sensor readings or system parameters.
• Configuration storage for embedded systems needing reliable parameter retention across power cycles.
• Device identification and calibration data storage in consumer electronics.

Procurement Notes

Verify the specific suffix 'I' confirms the Industrial temperature range (-40°C to +85°C). Confirm the 'MSOP' designation matches the required 8-lead Mini-Small Outline Package dimensions. Ensure the source documentation explicitly lists the 34LC02 variant, as electrical characteristics differ from the 34AA02 model regarding minimum operating voltage and clock speed limits.

Selection Notes

Select this component when a high-speed 1 MHz I²C interface is required compared to standard 400 kHz devices. Choose the 34LC02 specifically if the system operates reliably above 2.2V, as it does not support the 1.7V minimum of the 34AA02. Consider the MSOP package for space-constrained surface-mount designs requiring eight pins for address selection and write-protection control.

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 supports lower voltages but has a slower maximum clock speed. The 34LC02 variant is optimized for higher speed performance within the 2.2V to 5.5V operating range.

Replacement Considerations

The 34AA02-I/MS is a functional substitute within the same family, though it operates at a lower maximum clock frequency of 400 kHz and supports a lower minimum voltage of 1.7V. Verify that the target application does not require the 1.7V capability of the AA series before substituting.