Intel RC28F320J3D-75: A 32Mb 3V Flash Memory for Embedded Systems

In the realm of embedded systems design, where reliability, power efficiency, and space constraints are paramount, the choice of non-volatile memory is a critical architectural decision. The Intel RC28F320J3D-75 stands as a prominent solution from its era, a 32-megabit (4MB) 3-volt flash memory device engineered to meet the rigorous demands of this sector.

This memory chip is built upon a mature yet highly reliable StrataFlash architecture. This technology allows for the storage of multiple bits per memory cell, offering a cost-effective density that was essential for a wide range of applications. Operating at a single 3.0-volt VCC supply, it significantly simplifies power supply design compared to older 5V devices and contributes to lower overall system power consumption, a crucial factor for battery-powered or energy-sensitive embedded products.

Performance is characterized by a 75ns fast access time, enabling efficient code execution directly from the flash memory (execute-in-place, or XIP) without the need for shadowing into RAM in many systems. This feature is vital for real-time operating systems and applications requiring rapid boot times. The device is organized as 4,194,304 words x 8 bits or 2,097,152 words x 16 bits, providing design flexibility for both 8-bit and 16-bit microprocessors or microcontrollers.

Furthermore, the RC28F320J3D-75 is designed for industrial-grade robustness. It offers exceptional endurance with a minimum of 100,000 write cycles per sector and supports extended temperature ranges, ensuring data integrity and operational stability in harsh environments. Its compatibility with the Common Flash Interface (CFI) simplifies system integration by allowing the host software to automatically identify the memory device and its parameters.

ICGOODFIND: The Intel RC28F320J3D-75 exemplifies a balanced combination of density, low-voltage operation, and reliability, making it a foundational component for countless embedded systems, from networking equipment and telecom infrastructure to industrial automation and automotive electronics.

Keywords: Embedded Systems, StrataFlash Architecture, 3.0-volt VCC, Execute-in-Place (XIP), Common Flash Interface (CFI)