47L04-E/P

Overview

The Microchip Technology 47L04-E/P is a 4-kbit Electrically Erasable Random Access Memory (EERAM) device utilizing Static Random Access Memory technology with non-volatile data retention. It features an I2C serial interface operating at a maximum clock frequency of 1 MHz and a typical access time of 400 ns. The memory organization is structured as 512 words by 8 bits. It operates within a supply voltage range of 2.7 V to 3.6 V, with a maximum supply current of 400 uA. The component supports extended industrial temperature ranges from -40°C to +125°C and is housed in an 8-pin PDIP package.

Feature Summary

• Combines SRAM speed with EEPROM non-volatility for instant power-on readiness without initialization delays
• Supports standard I2C two-wire serial communication protocol for simplified system integration
• Provides unlimited read/write endurance cycles eliminating wear-out concerns associated with traditional flash memory

Applications

• Data logging systems requiring frequent parameter updates
• Configuration storage in industrial control equipment
• Calibration data retention in sensor interfaces

Procurement Notes

Verify the specific suffix 'P' corresponds to the PDIP-8 through-hole package variant when sourcing. Confirm the '-E' designation indicates the extended temperature grade suitable for harsh environments. Ensure compatibility with I2C bus voltage levels matching the 2.7V to 3.6V operational range. Check for RoHS compliance documentation if required for your manufacturing standards.

Selection Notes

Select this part when non-volatile storage with infinite write endurance is critical. It serves as a drop-in replacement for volatile SRAM where data loss upon power cycling is unacceptable. Consider the I2C interface constraints regarding bus speed and address configuration. Evaluate thermal requirements against the specified -40°C to +125°C operating range for your specific application environment.

Part Context

This component belongs to the Microchip 47L04 series of serial EERAM devices. The series offers various package options including SOIC and TSSOP, alongside different temperature grades. These devices are designed to bridge the gap between fast volatile memory and slow non-volatile storage technologies, providing immediate data availability upon power restoration.

Replacement Considerations

Direct substitutes include other 4kbit I2C EERAM devices from Microchip such as the 47L04-I/P or 47L04-E/SN, depending on package and temperature requirements. Cross-brand replacements require careful verification of I2C timing parameters and voltage tolerances.