47C04-E/ST

Overview

The Microchip Technology 47C04-E/ST is a 4Kbit Serial EERAM memory device organized as 512 words by 8 bits. It integrates SRAM with infinite read/write cycles and EEPROM for nonvolatile data retention, accessed via an I2C serial interface operating at clock frequencies up to 1 MHz. The component supports a supply voltage range of 4.5V to 5.5V and features a maximum access time of 400 ns. Designed for industrial applications, it operates within a temperature range of -40°C to +85°C and is housed in an 8-pin TSSOP package.

Feature Summary

• Combines high-speed SRAM with nonvolatile EEPROM for seamless data persistence
• Supports standard I2C serial communication protocol
• Provides unlimited endurance for SRAM write operations

Applications

• Industrial control systems requiring persistent configuration storage
• Data logging devices needing frequent write cycles
• Embedded systems with limited power budget constraints

Procurement Notes

Verify the specific suffix 'E' indicates the extended industrial temperature range (-40°C to +85°C) and 'ST' denotes the 8-TSSOP package. Confirm RoHS compliance status through official Microchip documentation prior to integration. Ensure I2C bus compatibility with the host controller's voltage levels and pull-up requirements.

Selection Notes

Select this part when infinite SRAM write endurance is required alongside nonvolatile backup capabilities. The I2C interface minimizes pin count compared to parallel alternatives. Consider the 4.5V to 5.5V supply requirement and ensure the application environment falls within the specified industrial temperature range for reliable operation.

Part Context

The 47C04 belongs to the Microchip 47XXX series of Serial EERAMs, which also includes the 47L04 variant. These devices are designed to replace traditional EEPROM or Flash memory in applications where high write endurance is critical. The series utilizes a unified I2C interface for both volatile and nonvolatile memory sections.

Replacement Considerations

The 47C04T-I/ST is listed as a parameter-equivalent alternative. Verify package compatibility and temperature grade specifications before substitution. Cross-reference datasheets to confirm identical electrical characteristics and pinout configurations.