34AA02-I/MS

Overview

The Microchip Technology 34AA02-I/MS is a 2 Kbit (256 x 8) Electrically Erasable PROM featuring an I²C-compatible 2-wire serial interface. It operates on a single supply voltage ranging from 1.7V to 5.5V and supports clock frequencies up to 400 kHz. The device includes permanent and resettable software write-protect capabilities for the lower half of the array, alongside hardware protection via the WP pin. It utilizes low-power CMOS technology with typical standby current of 100 nA and read current of 1 mA.

Feature Summary

• Features permanent and resettable software write-protect mechanisms for the lower half of the memory array
• Supports bidirectional 2-wire serial communication compatible with standard I²C protocols
• Includes Schmitt trigger inputs and output slope control for enhanced noise suppression and ground bounce elimination

Applications

• Data storage in battery-powered consumer electronics requiring low standby current
• Configuration parameter retention in industrial control systems
• Device identification and calibration data storage in embedded controllers

Procurement Notes

Verify that the ordering suffix corresponds to the MSOP package type and Industrial temperature range (-40°C to +85°C). Confirm RoHS compliance status as specified in the manufacturer's documentation. Ensure compatibility with system voltage levels between 1.7V and 5.5V before integration.

Selection Notes

Select this component when a small non-volatile memory solution with flexible write-protection options is required. The MSOP package offers a compact surface-mount footprint suitable for space-constrained designs. Consider the 400 kHz speed limit if higher bus throughput is needed, or verify that the 1.7V minimum operating voltage aligns with the system power rail.

Part Context

This part belongs to the 34AA02/34LC02 family of 2 Kbit serial EEPROMs manufactured by Microchip Technology. The 'I' designation indicates the Industrial temperature grade, while '/MS' specifies the 8-lead MSOP package. It shares functional similarities with other devices in the series but differs in voltage ranges and package styles.

Replacement Considerations

Direct substitutes include the 34LC02 series for applications requiring higher clock speeds at elevated voltages. Other packages within the same electrical specification such as SOIC or TSSOP variants may be used if pinout compatibility is maintained.