Intel JS28F128J3D-75: A 128-Megabit Parallel NOR Flash Memory for Embedded Systems
In the realm of embedded systems, where reliability, non-volatility, and fast random access are paramount, parallel NOR flash memory remains a critical component. The Intel JS28F128J3D-75 stands as a prominent solution in this space, offering a robust 128-megabit (16MB) density tailored for demanding applications. This device exemplifies the enduring value of parallel interface memory in systems requiring immediate code execution and high performance.
A key attribute of the JS28F128J3D-75 is its x16 parallel asynchronous interface, which provides the crucial capability for Execute-In-Place (XIP). This allows microprocessors to run code directly from the flash memory without the need to first copy it into RAM, significantly simplifying system design and reducing both cost and power consumption by eliminating the need for a large RAM component. The 75ns maximum initial access time ensures that processors are not kept waiting, enabling efficient system boot and operation.
Built on Intel's proven StrataFlash® embedded memory architecture, this device is engineered for exceptional reliability and endurance. It supports a minimum of 100,000 program/erase cycles per block, a vital specification for firmware that may require frequent updates over the lifespan of the product. Furthermore, its data retention capability is rated for up to 20 years, guaranteeing the integrity of stored code and data long into the future.
The memory array is organized into 128 uniform 64-Kbyte blocks. This architecture provides the flexibility for efficient memory management, allowing designers to store boot code, operating system kernels, application code, and calibration data in separate, protected regions. The inclusion of advanced software and hardware data protection features safeguards against accidental corruption, which is essential for maintaining system stability.
Operating at a voltage range of 2.7V to 3.6V and specified for the extended industrial temperature range (-40°C to +85°C), the JS28F128J3D-75 is well-suited for challenging environments found in industrial automation, telecommunications infrastructure, medical devices, and aerospace and defense systems.
ICGOOODFIND: The Intel JS28F128J3D-75 is a high-performance, high-reliability parallel NOR flash memory solution. Its combination of a fast XIP-capable interface, robust endurance, and long-term data retention makes it an excellent choice for developers building critical and long-lifecycle embedded systems.
Keywords: Execute-In-Place (XIP), Parallel NOR Flash, Embedded Systems, 100,000 P/E Cycles, Industrial Temperature Range
