34AA02T-I/OT

Overview

The Microchip Technology 34AA02T-I/OT is a 2 Kbit (256 x 8) I²C Serial EEPROM housed in a 6-lead SOT-23 package. It operates on a single supply voltage ranging from 1.7V to 5.5V and supports clock frequencies up to 400 kHz within the industrial temperature range of -40°C to +85°C. The device features a 16-byte page write buffer, typical standby current of 1 µA, and endurance exceeding one million erase/write cycles with data retention over 200 years.

Feature Summary

• Includes permanent and resettable software write-protect capabilities for the lower half of the memory array alongside hardware protection via the WP pin.
• Supports bidirectional two-wire serial interface compatible with standard I²C protocols at 100 kHz and 400 kHz speeds.
• Integrates Schmitt trigger inputs and output slope control to suppress noise spikes and eliminate ground bounce during operation.

Applications

• Low-power embedded systems requiring non-volatile data storage
• Industrial control devices operating across wide voltage ranges
• Consumer electronics utilizing compact surface-mount packaging

Procurement Notes

Verify that the specific ordering suffix matches the required temperature grade and package configuration. Confirm compatibility with the target system's I²C bus voltage levels and pull-up resistor requirements. Ensure design adherence to absolute maximum ratings to prevent damage during procurement and integration phases.

Selection Notes

Select this component when a compact 6-lead SOT-23 footprint is necessary for space-constrained designs. Choose this part for applications requiring flexible write-protection schemes involving both software commands and hardware pins. Consider this device for systems needing reliable non-volatile storage with low standby power consumption.

Part Context

This component belongs to the 34XX02 family of electrically erasable programmable read-only memories. It shares functional similarities with the 34LC02 but differs in voltage specifications and clock frequency limits. The series provides scalable memory solutions for various microcontroller-based architectures.

Replacement Considerations

Public confirmed substitute part numbers: 34LC02T-I/OT, 24AA02T-I/OT, 24CS02T-I/OT.