Intel PC28F128P33BF60: A Comprehensive Technical Overview of the 128-Megabit Flash Memory Device

The Intel PC28F128P33BF60 stands as a significant component within the landscape of non-volatile memory solutions, representing a mature yet highly capable 128-megabit (16-megabyte) parallel NOR Flash memory device. Engineered for high-performance applications requiring reliable code storage and execution, this device encapsulates a blend of density, speed, and robustness, making it a cornerstone for numerous embedded systems.

Architecture and Core Technology

Fabricated on Intel's advanced StrataFlash® technology, this device utilizes a multi-level cell (MLC) architecture. This allows a single memory cell to store two bits of data, effectively doubling the density compared to traditional single-level cell (SLC) NOR Flash without a proportional increase in die size. The memory is organized as 16,777,216 bits, configured as 128 megabits, typically arranged as 8,192 erasable sectors of 16 Kbytes each or a combination of larger and smaller sectors, providing flexibility for code and data storage.

Key Performance Characteristics

A defining feature of the PC28F128P33BF60 is its sustained high-speed performance. With a 66 MHz bus frequency operating on a 16-bit data width, it offers fast read access times, crucial for execute-in-place (XIP) functionality where the microcontroller runs code directly from the Flash. Its asynchronous page mode further enhances read throughput by allowing rapid access to data within a selected "page" of memory, significantly reducing effective read times for sequential operations.

The device supports a versatile voltage supply range. The core logic operates at a low 1.8V, while the I/O interfaces can be driven by either 1.8V or 3.0V, making it compatible with both legacy and modern low-power system designs. This flexibility is critical for power-sensitive and battery-operated applications.

Reliability and Endurance

Designed for industrial and telecommunications applications, this Flash memory boasts exceptional endurance and data retention. It supports a minimum of 100,000 program/erase cycles per sector, ensuring that firmware can be updated frequently over the product's lifetime. Furthermore, it guarantees data retention for up to 20 years, safeguarding critical code and data against loss.

Software and Hardware Features

The PC28F128P33BF60 incorporates several features to simplify system integration and enhance security. It supports a Common Flash Interface (CFI), which allows host software to automatically query the device to determine its architecture and electrical characteristics. This simplifies design and allows for a single software driver to support multiple Flash densities. For protection, it offers advanced sector protection mechanisms, including a password-based security lock, to prevent accidental or malicious modification of critical boot code.

Target Applications

This memory device is ideally suited for a wide array of demanding applications, including:

Networking Equipment: Routers, switches, and hubs for storing boot code and firmware.

Industrial Control Systems: Programmable Logic Controllers (PLCs) and embedded computing modules.

Telecommunications Infrastructure: Base stations and communication controllers.

Automotive Systems: Engine control units (ECUs) and infotainment systems requiring robust, reliable storage.

ICGOOODFIND: The Intel PC28F128P33BF60 remains a highly reliable and performant parallel NOR Flash memory solution. Its combination of high density, fast read performance, and industrial-grade endurance makes it a trusted choice for developers of complex embedded systems where reliable code storage and execution are paramount. While newer serial interfaces like SPI have gained popularity, the parallel interface of this device continues to offer unmatched bandwidth for XIP applications.

Keywords:

NOR Flash Memory

Execute-in-Place (XIP)

StrataFlash Technology

Non-Volatile Memory

Embedded Systems