47C04-I/ST

Overview

The MCP47C04-I/ST is a 4-kbit synchronous EERAM device manufactured by Microchip Technology. It combines SRAM speed with EEPROM non-volatility, organized as 512 words by 8 bits. The component operates via an I2C interface with a maximum clock frequency of 1 MHz and features a 400 ns access time. It supports supply voltages between 4.5 V and 5.5 V and functions within an industrial temperature range of -40°C to +85°C. The device is housed in an 8-pin TSSOP package.

Feature Summary

• Integrates SRAM performance with EEPROM non-volatile storage capabilities
• Supports high-speed I2C serial communication up to 1 MHz
• Provides fast 400 ns access times for data retrieval

Applications

• Industrial control systems requiring persistent configuration data
• Data logging applications needing frequent write cycles
• Embedded systems utilizing I2C bus architectures

Procurement Notes

Verify the specific suffix 'I' indicates the industrial temperature grade (-40°C to +85°C) and '/ST' denotes the TSSOP-8 package. Confirm that the part number corresponds to the 5.0V variant, distinct from the 3.0V 47L04 series. Ensure compatibility with standard I2C voltage levels before integration into the target circuit design.

Selection Notes

Select this component when application requirements demand high endurance for frequent data writes without the latency associated with traditional EEPROM programming cycles. The synchronous I2C interface simplifies system integration compared to asynchronous alternatives. Consider the 5.0V operating range suitability against available power rails in the host system architecture.

Part Context

This device belongs to the Microchip 47Cxx family of synchronous EERAMs, which merge static RAM speed with non-volatile retention. It serves as a memory solution for applications requiring rapid data updates and persistence. The family includes variants like the 47C16 for higher capacity and the 47L04 for lower voltage operation.

Replacement Considerations

The 47C16-I/ST offers equivalent functionality with increased 16-kbit capacity. For lower voltage applications, the 47L04-I/ST provides similar features but operates within a 2.7V to 3.6V range. Verify pinout and electrical specifications match before substituting.