JS28F128J3D75A

JS28F128J3D75A – 128Mbit Parallel NOR Flash Memory – Micron Technology
The Micron JS28F128J3D75A is a high-reliability 128Mbit NOR Flash memory IC designed for embedded systems requiring robust non-volatile storage. Part of Micron’s StrataFlash™ series, this obsolete component remains available through PCX for legacy support, offering fast 75ns access times and industrial-grade temperature resilience. Ideal for critical applications where data integrity is paramount.

Key Features

Memory Size: 128Mbit (16M x 8 or 8M x 16 organization)
Interface: High-speed Parallel
Access Time: 75ns
Voltage Range: 2.7V–3.6V
Temperature Range: -40°C to +85°C
Technology: NOR Flash with StrataFlash™ architecture

Technical Details
This surface-mount IC utilizes a 56-TSOP package for compact PCB integration. Its parallel interface enables rapid data transfers, while the NOR flash technology provides reliable byte-level write capability and instant execution. The device supports flexible memory organization (x8 or x16 bus width) and maintains data integrity across industrial temperature extremes. Non-volatile storage ensures zero data loss during power cycles.

Typical Applications

Industrial automation controllers
Legacy networking equipment
Medical instrumentation firmware storage
Automotive telematics systems
Military/aerospace embedded computing

About Micron Technology
Micron Technology Inc. is a global leader in advanced memory and storage solutions, renowned for pushing the boundaries of semiconductor innovation. With over 40 years of industry expertise, Micron’s components are synonymous with high performance, endurance, and quality assurance across mission-critical sectors.
The company’s StrataFlash™ series represents a legacy of reliable non-volatile memory technology, engineered to meet stringent industrial and automotive standards. Micron maintains rigorous testing protocols, ensuring consistent operation in demanding environments where data integrity cannot be compromised.

About NOR Flash Memory
NOR Flash is a non-volatile memory technology optimized for code storage and execute-in-place (XIP) applications, allowing microprocessors to run programs directly from flash. Unlike NAND alternatives, NOR provides faster random access, superior data retention, and error-free operation—making it indispensable for boot code, firmware, and real-time systems.
This memory type excels in applications requiring instant-on functionality, minimal latency, and high reliability. Its byte-level addressability simplifies design integration, while industrial temperature ratings ensure stability in harsh operational environments like factory automation, transportation, and outdoor infrastructure.

Packaging
Available in protective trays for secure handling and automated assembly. Contact PCX for reel packaging options or custom quantities.

Frequently Asked Questions
Q: Is this NOR Flash IC suitable for industrial temperature environments?
A: Yes, it operates reliably from -40°C to +85°C, meeting industrial-grade requirements.

Q: Can I use this for new designs despite its obsolete status?
A: While primarily for legacy support, it remains viable for long-lifecycle systems where component consistency is critical.

Q: What voltage does this memory require?
A: It supports 2.7V–3.6V operation, compatible with common 3.3V systems.

Q: How does NOR Flash differ from NAND Flash?
A: NOR enables direct code execution with faster read times, while NAND offers higher densities at lower cost for data storage.

Q: Is a datasheet available?
A: Yes, PCX provides the datasheet upon request for detailed electrical specifications.

Q: What if I need firmware migration support?
A: PCX offers