Intel RC28F320J3D75D: A 32Mb NOR Flash Memory for Embedded Systems

In the realm of embedded systems, where reliability, speed, and non-volatility are paramount, NOR Flash memory remains a cornerstone technology. The Intel RC28F320J3D75D stands as a prominent example, a 32-megabit (4MB) memory solution engineered to meet the rigorous demands of applications ranging from automotive systems and industrial controllers to networking equipment and telecommunications infrastructure.

A key attribute of this memory device is its asymmetric block architecture, which is optimized for both code and data storage. It features a combination of 128-KB blocks for storing large application firmware and smaller 8-KB and 64-KB parameter blocks for frequently updated data, providing system designers with flexible memory management. This architecture is crucial for systems that require a robust execute-in-place (XIP) capability, allowing microprocessors to run code directly from the flash memory without needing to first copy it to RAM, thereby reducing system complexity and boot time.

The device operates on a single 3.3V power supply and offers a fast 75ns initial access time, enabling high-performance system operation. Its compatibility with the Common Flash Memory Interface (CFI) simplifies integration, as system software can automatically query the device to understand its architecture, voltage requirements, and timing parameters. This plug-and-play feature significantly streamlines the design process.

Furthermore, the RC28F320J3D75D is built for endurance and longevity. It supports a minimum of 100,000 program/erase cycles per block, ensuring reliable performance over the extended lifecycle typical of embedded products. Advanced command set features allow for block locking, providing hardware-level protection for critical boot code against accidental or malicious corruption.

For in-system updates, the component supports a word-programming algorithm and a block-erase capability, making firmware upgrades in the field both feasible and secure. Its low power consumption in both active and standby modes makes it an excellent choice for power-sensitive applications.

ICGOODFIND Summary: The Intel RC28F320J3D75D is a high-reliability, high-performance 32Mb NOR Flash memory solution. Its asymmetric block architecture, fast access times, and exceptional endurance make it a versatile and dependable choice for a wide spectrum of embedded systems where data integrity and instant-on performance are critical.

Keywords: NOR Flash Memory, Embedded Systems, Execute-in-Place (XIP), Asymmetric Block Architecture, Common Flash Memory Interface (CFI).