34AA04-I/ST

Overview

The Microchip Technology 34AA04-I/ST is a 4-kbit serial electrically erasable programmable read-only memory (EEPROM) device. It utilizes an I2C-compatible two-wire serial interface for data communication. The device features a storage organization of 512 words by 8 bits. It operates within a supply voltage range of 1.7V to 3.6V and supports clock frequencies up to 1 MHz. The component is available in an 8-lead Small Outline Thin (SOT-23) package.

Feature Summary

• Supports standard and high-speed modes on the I2C bus
• Provides hardware write protection via dedicated pin
• Features self-timed page write cycles

Applications

• DDR4 SPD applications
• Consumer electronics configuration storage
• Industrial control system parameter logging

Procurement Notes

Verify the specific suffix 'I/ST' corresponds to the industrial temperature range and SOT-23 packaging. Confirm that the I2C address pins are configured correctly for the target system topology. Ensure voltage levels match the 1.7V to 3.6V operational window. Check for RoHS compliance documentation prior to final integration.

Selection Notes

Select this component when a compact SOT-23 footprint is required for low-capacity non-volatile storage. It is suitable for systems requiring I2C connectivity with moderate speed requirements. Consider the 4-kbit capacity limit for application data size. Verify compatibility with the host controller's I2C voltage levels and pull-up resistor requirements.

Part Context

This part belongs to the 34AA04 family of EEPROMs designed specifically for Serial Presence Detect (SPD) applications in DDR4 memory modules. It shares architectural similarities with other 24AA series devices but is optimized for specific industry standards regarding memory module identification and configuration data storage.

Replacement Considerations

Public confirmed substitute part numbers: 24AA04-I/ST, 24AA04T-I/ST.