47L04-E/SN

Overview

The Microchip Technology 47L04-E/SN is a serial EERAM device combining EEPROM non-volatility with SRAM speed. It features a 4 kbit storage capacity organized as 512 words by 8 bits. The component utilizes an I2C interface with a maximum clock frequency of 1 MHz and an access time of 400 ns. Operating voltage ranges from 2.7 V to 3.6 V, with a maximum supply current of 400 uA. It supports surface-mount installation in an 8-SOIC package and functions within a temperature range of -40°C to +125°C.

Feature Summary

• Combines non-volatile EEPROM retention with volatile SRAM read/write speeds
• Supports standard I2C serial communication protocol
• Operates across extended industrial temperature ranges

Applications

• Data logging systems requiring frequent write cycles
• Configuration storage for embedded controllers
• Parameter retention in battery-backed circuits

Procurement Notes

Verify the suffix 'E' indicates RoHS compliance and 'SN' specifies the SOIC-8 surface mount package. Confirm the operating temperature grade matches system requirements, as other variants exist. Check manufacturer documentation for humidity sensitivity handling instructions during assembly. Ensure I2C bus voltage levels align with the 2.7V to 3.6V supply range.

Selection Notes

Select this part when high endurance write cycles are needed alongside fast random access. Compare against standard EEPROMs if write speed is critical. Consider the 8-SOIC footprint constraints against PCB layout availability. Evaluate power consumption limits against the 400 uA maximum specification.

Part Context

The 47L04 belongs to Microchip's serial EERAM family, designed to bridge the gap between slow non-volatile memory and fast volatile RAM. This specific model represents the 4 kbit density variant using I2C connectivity. It serves as a drop-in replacement for applications previously limited by EEPROM write latency or SRAM data loss upon power failure.

Replacement Considerations

Public confirmed substitutes include the 47L04-I/P and 47L04-I/ST. Verify pin compatibility and thermal ratings before substitution.