34AA04-E/ST

Overview

The Microchip Technology 34AA04-E/ST is a 4-kbit serial electrically erasable programmable read-only memory (EEPROM) designed for low-voltage and standard voltage applications. It features an I2C (2-Wire) interface with a maximum clock frequency of 1 MHz. The device is organized as 512 x 8 bits and offers a fast access time of 350 ns. Operating within a supply voltage range of 1.7 V to 3.6 V, it supports surface mount installation in an 8-pin TSSOP package. The component ensures data retention for up to 200 years and functions reliably across an industrial temperature range from -40°C to +85°C.

Feature Summary

• Supports high-speed I2C communication with a maximum clock frequency of 1 MHz for efficient data transfer.
• Provides non-volatile storage with long-term data retention capabilities suitable for critical system parameters.
• Operates efficiently at low supply voltages, enabling compatibility with modern low-power electronic designs.

Applications

• SPD (Serial Presence Detect) memory for DDR4 modules
• Storage of configuration data in embedded systems
• Parameter storage in industrial control devices

Procurement Notes

Verify the specific suffix 'E' indicates the extended industrial temperature range (-40°C to +85°C) and 'ST' denotes the TSSOP-8 package. Confirm that the ordering information matches the required voltage and interface specifications for your target application. Ensure compliance with RoHS directives if required by your manufacturing standards. Cross-reference the manufacturer part number directly with official Microchip documentation to avoid counterfeit components.

Selection Notes

Select this component when a 4-kbit capacity is sufficient for storing small amounts of non-volatile data. The I2C interface minimizes pin count requirements, making it ideal for space-constrained designs. The wide operating voltage range allows flexibility in power supply design. Consider the TSSOP-8 package for surface-mount assembly compatibility. Verify that the 1 MHz clock speed meets the timing requirements of the host controller.

Part Context

This EEPROM belongs to the 34AA04 series, which is specifically optimized for SPD applications in memory modules. The series provides a reliable solution for storing JEDEC-compliant data in DDR4 systems. The 34AA04 variant offers a balance of performance and density for general-purpose low-capacity storage needs in consumer and industrial electronics.

Replacement Considerations

Public confirmed substitute part numbers include 34AA04-I/ST for the same package with industrial temperature rating. Other variants in the 34AA04 family may offer different packaging or temperature ranges but maintain functional compatibility. Verify pinout and electrical characteristics before substitution.