34AA04T-E/MNY

Overview

The Microchip Technology 34AA04T-E/MNY is a 4 Kbit Electrically Erasable PROM utilizing an I2C serial interface. It operates across a voltage range of 1.7V to 3.6V and supports clock frequencies up to 1 MHz, with specific limits at lower voltages. The device features reversible software write protection for four individual 128-byte blocks and page writes of up to 16 bytes. It is JEDEC JC42.4 (EE1004-v) Serial Presence Detect compliant for DDR4 modules. The automotive grade (-E) variant functions within a temperature range of -40°C to +125°C and is housed in an 8-lead UDFN package.

Feature Summary

• JEDEC JC42.4 (EE1004-v) Serial Presence Detect compliance for DRAM modules
• Reversible software write protection for four independent 128-byte blocks
• High-speed I2C interface supporting industry standard bus speeds
• Schmitt trigger inputs for noise suppression on SDA and SCL lines

Applications

• Serial Presence Detect (SPD) storage for DDR4 memory modules
• Data logging in industrial systems requiring nonvolatile storage
• Configuration storage in automotive electronic control units
• Parameter retention in low-power embedded devices

Procurement Notes

Verify the suffix 'MNY' corresponds to the 8-lead UDFN package type as specified in the datasheet. Confirm the '-E' designation indicates the Automotive temperature range (-40°C to +125°C). Ensure the ordering code matches the required JEDEC SPD compliance and voltage specifications for your target application.

Selection Notes

Select this component when JEDEC EE1004-v SPD compliance is mandatory for DDR4 applications. Choose the automotive grade for environments exceeding standard industrial temperatures. Consider the UDFN package for space-constrained PCB layouts. Verify that the 1.7V minimum operating voltage aligns with the system power supply rails.

Part Context

The 34AA04 belongs to Microchip's 34AA0x series of I2C EEPROMs. This family provides 4 Kbit capacity with integrated bank addressing for backward compatibility with older SPD standards. The series includes variants with different package options and temperature ratings, sharing the same core electrical characteristics and command set architecture.

Replacement Considerations

Direct substitutes include other 34AA04 variants from Microchip with different packages or temperature grades. Cross-brand replacements must match the 4 Kbit capacity, I2C interface, and SPD compliance requirements.