IC FLASH 64MBIT PARALLEL 56TSOP

JS28F640J3F75A – 64Mbit Parallel NOR Flash Memory – Alliance Memory

This JS28F640J3F75A from Alliance Memory is a high-performance 64Mbit parallel NOR flash IC engineered for embedded systems requiring reliable non-volatile storage. Ideal for legacy designs and industrial applications, it combines fast access times with robust data retention. PCX ensures genuine Alliance Memory components with same-day shipping and dedicated technical support.

Key Features

• Memory Size: 64Mbit (8MB) storage capacity
• Organization: Configurable as 4M x 16 or 8M x 8
• Speed: 75ns access time & write cycle
• Interface: Parallel address/data bus
• Voltage Range: 2.7V–3.6V operation (low-power compatible)
• Temperature Range: Industrial-grade -40°C to +85°C

Technical Details

Built with NOR flash technology, this IC delivers reliable byte-alterable storage with 100,000+ program/erase cycles. The 56-TSOP surface-mount package (18.4mm width) supports automated assembly. Parallel interface enables high-throughput data transfers, while the wide voltage tolerance ensures stability in power-fluctuating environments. Note: This part is marked obsolete but remains available for legacy system maintenance.

Applications

• Industrial control systems & PLCs
• Legacy networking equipment
• Medical device firmware storage
• Automotive telematics modules
• Embedded computing boot ROM

About Alliance Memory

Alliance Memory specializes in advanced DRAM, SRAM, and flash memory solutions, serving demanding industries like aerospace, medical, and telecommunications. With over 20 years of expertise, they maintain rigorous quality standards compliant with ISO 9001 protocols.

Their focus on legacy component support makes them a preferred supplier for long-lifecycle systems. Alliance Memory consistently delivers products with extended temperature ranges and low-power profiles, ensuring reliability in critical applications where component obsolescence is a key concern.

About Parallel NOR Flash Memory

Parallel NOR flash provides direct, high-speed memory access via a dedicated address/data bus, making it ideal for execute-in-place (XIP) operations in embedded systems. Unlike serial flash, it eliminates read latency for real-time code execution.

This memory type is commonly used for boot code, firmware, and OS storage in industrial electronics due to its reliability, fast random access, and bit-level modification capability. Its robustness against power interruptions and radiation makes it suitable for mission-critical environments.

Packaging Options

Available in factory-sealed trays for automated PCB 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 across -40°C to +85°C.

Q: Can I use this for new designs despite its obsolete status?
A: While functional, we recommend consulting PCX engineers for lifecycle alternatives unless maintaining legacy hardware.

Q: Does it support in-system programming?
A: Yes, the parallel interface enables firmware updates without removal.

Q: What distinguishes NOR from NAND flash?
A: NOR allows random access with faster read speeds; NAND offers higher density at lower cost but requires block erasure.

Q: Is a datasheet available?
A: Download the full JS28F640J3F75A datasheet (hosted by PCX).

Q: How does PCX handle obsolete component orders?
A: We maintain limited stock of legacy ICs and offer sourcing solutions for end-of-life projects.

Order Today for Immediate Shipment!

Secure this critical memory IC before stock depletes. PCX guarantees authentic Alliance Memory components, same-day dispatch, and lifetime technical support. Submit your inquiry now for guaranteed inventory!

Disclaimer: Product images are representational. Refer to datasheet for exact specifications.