47C04T-E/ST

Overview

The Microchip Technology 47C04T-E/ST is a 4Kbit (512 x 8) Synchronous EERAM device utilizing an I2C interface. It integrates SRAM with non-volatile EEPROM backup to retain data during power transitions. The component operates within a voltage range of 4.5V to 5.5V and supports clock frequencies up to 1MHz. It features a 400ns access time and is housed in an 8-TSSOP surface-mount package, designed for industrial temperature ranges.

Feature Summary

• Combines volatile SRAM speed with non-volatile EEPROM storage for seamless data retention
• Synchronous serial operation via standard I2C protocol
• Automatic hardware-based data preservation during power loss events

Applications

• Industrial control systems requiring persistent configuration storage
• Data logging applications needing reliable parameter retention
• Embedded devices with limited board space for memory components

Procurement Notes

Verify the specific suffix 'E' indicates extended temperature range compliance against your design requirements. Confirm the 'T' suffix denotes tape-and-reel packaging suitable for automated assembly processes. Ensure the I2C address matches your system bus configuration before finalizing procurement orders.

Selection Notes

Select this part when both high-speed random access and non-volatile data integrity are required without external battery support. Compare against standard EEPROMs if write endurance is critical, or against pure SRAM if cost reduction is prioritized over data persistence. Validate that the 5.5V maximum supply voltage aligns with your system's power rails.

Part Context

This component belongs to the 47C04 family of synchronous EERAMs, which merge SRAM performance with EEPROM reliability. The family offers various package options including TSSOP and PDIP, catering to different manufacturing needs while maintaining consistent electrical characteristics and interface protocols across variants.

Replacement Considerations

Direct substitutes include other 4Kbit I2C EERAM devices from compatible manufacturers. Verify pin compatibility and register mapping before swapping. Alternative Microchip parts like the 47C16 offer higher capacity but may require software adjustments.