47C04-I/SN

Overview

The Microchip Technology 47C04-I/SN is a 4-kbit (512 x 8) Serial EERAM memory device utilizing an I2C interface. It operates within a supply voltage range of 4.5V to 5.5V and supports clock frequencies up to 1 MHz. The component features a fast access time of 400 ns and a write cycle time of 1 ms per word or page. Designed for industrial applications, it functions reliably across a temperature range of -40°C to +85°C. The device is housed in an 8-TSSOP surface-mount package.

Feature Summary

• Combines SRAM speed with EEPROM non-volatility through integrated backup circuitry
• Supports standard I2C serial communication protocol for efficient data transfer
• Provides rapid random read access times suitable for high-speed data logging

Applications

• Industrial control systems requiring reliable parameter storage
• Data logging devices needing frequent write cycles
• Consumer electronics with configuration memory needs

Procurement Notes

Verify the specific suffix against official Microchip documentation to confirm package type and temperature grade. The 'SN' suffix typically denotes SOIC-8 packaging, whereas 'ST' indicates TSSOP. Ensure the selected variant matches the target PCB footprint and thermal requirements. Cross-reference the full part number with the manufacturer's current datasheet to validate active status and compliance details before finalizing procurement.

Selection Notes

Select this component when a design requires the endurance of EEPROM but the speed of SRAM without complex wear-leveling algorithms. It is suitable for applications where power loss protection is critical but battery backup is impractical. Compare against standard EEPROMs if write speed is a priority, or against volatile SRAM if data retention during power failure is mandatory. Verify voltage compatibility with the system logic level.

Part Context

This part belongs to the Microchip 47x04/47x16 family of Serial EERAMs. These devices integrate a small EEPROM array behind a static RAM buffer to provide unlimited write endurance. The family offers capacities ranging from 4-kbit to 16-kbit, sharing similar interface characteristics and pinouts to facilitate scalable design transitions within embedded systems.

Replacement Considerations

Publicly confirmed substitutes include the 47L04 series for extended temperature ranges or lower voltage operation, and the 47C16 for increased capacity. Verify pinout compatibility and voltage specifications when substituting. The 47C04T-I/ST is a direct equivalent in terms of functionality but differs in package style.