47L04-E/ST

Overview

The Microchip Technology 47L04-E/ST is a 4-kbit synchronous EERAM device organized as 512 words by 8 bits. It operates within a supply voltage range of 2.7 V to 3.6 V and supports an I2C interface with a maximum clock frequency of 1 MHz. The component features a typical access time of 400 ns and a maximum power consumption of 400 µA. It is designed for surface-mount installation in an 8-lead TSSOP package, ensuring reliable performance across an extended industrial temperature range from -40°C to +85°C.

Feature Summary

• Combines SRAM speed with EEPROM non-volatility using synchronous I2C interface
• Operates at high clock frequencies up to 1 MHz for efficient data transfer
• Provides low-power operation suitable for battery-constrained applications

Applications

• Industrial control systems requiring persistent data storage
• Smart metering devices needing configuration retention
• Embedded sensors storing calibration parameters

Procurement Notes

Verify the specific suffix 'E' indicates the extended industrial temperature grade (-40°C to +85°C) rather than commercial grade. Confirm the '/ST' designation corresponds to the TSSOP-8 package variant. Ensure compatibility with I2C bus voltage levels matching the 2.7V to 3.6V operating range. Check for RoHS compliance documentation if required for your assembly process.

Selection Notes

Select this part when non-volatile storage is needed without the write-cycle limitations of traditional EEPROMs. The synchronous I2C interface allows for higher throughput compared to asynchronous counterparts. Consider the TSSOP-8 package for space-constrained PCB layouts. Ensure the system voltage remains within the 2.7V to 3.6V window for stable operation.

Part Context

The 47L04 belongs to Microchip's 47Lxx series of serial EERAMs. These devices integrate SRAM arrays with on-chip EEPROM management circuitry to provide unlimited write cycles. The series typically includes variants with different capacities and packages, sharing common interface protocols and functional architectures for scalable design implementation.