Intel PC28F128J3D75A: A Comprehensive Technical Overview of the 128-Megabit Flash Memory Device

The Intel PC28F128J3D75A represents a significant component within the landscape of non-volatile memory solutions, designed to meet the demanding requirements of embedded systems, networking equipment, and telecommunications infrastructure. As a 128-megabit (16-megabyte) flash memory device, it leverages a mature yet highly reliable technology, offering a robust combination of performance, density, and durability.

Fabricated on a 0.13-micron process technology, this device is part of Intel's renowned StrataFlash® Embedded Memory family. Its core architecture is based on a multi-level cell (MLC) design, which allows for the storage of two bits of data per memory cell. This approach effectively doubles the density compared to single-level cell (SLC) counterparts without a proportional increase in die size, making it a cost-effective solution for high-density applications.

A key feature of the PC28F128J3D75A is its symmetric 128-kilobyte erase blocks. This uniform block architecture simplifies firmware design and wear-leveling algorithms, which is critical for maximizing the device's endurance. The chip is rated for a minimum of 100,000 program/erase (P/E) cycles per block, ensuring long-term data integrity and reliability for frequently updated code or data storage.

The device operates on a 2.7V to 3.6V voltage supply for both core and I/O, making it suitable for a wide range of low-power systems. It features a versatile asynchronous page-mode interface, allowing for fast read accesses. With a page size of 4 words (8 bytes), it can achieve a 70ns initial page access time and subsequent page accesses as fast as 25ns, significantly boosting read throughput for burst operations.

For in-system programming and erasure, the PC28F128J3D75A supports a Common Flash Interface (CFI). This standardized command set allows host software to automatically query the device to determine its manufacturer, memory architecture, and electrical characteristics, simplifying system integration and driver development. Furthermore, it incorporates advanced functionality for hardware and software data protection, including a dedicated WP (Write Protect) pin and a robust locking mechanism to prevent accidental modification of critical boot code sectors.

Packaged in a standard 64-ball Intel® Easy BGA or other industry-standard packages, the device offers a compact footprint. It is specified to operate over the industrial temperature range (-40°C to +85°C), ensuring stable performance in harsh environmental conditions.

ICGOOODFIND: The Intel PC28F128J3D75A stands as a testament to a balanced design philosophy, prioritizing high density, proven reliability, and ease of integration. Its symmetric block architecture, robust endurance, and standard interface made it a workhorse for a generation of embedded designs requiring dependable non-volatile storage.

Keywords: Flash Memory, StrataFlash, Non-Volatile, Embedded Systems, 128-Megabit