Intel JS28F256P30T95 256-Megabit P30 Parallel NOR Flash Memory: Technical Overview and Applications
The Intel JS28F256P30T95 is a high-performance 256-megabit (32MB) parallel NOR Flash memory device manufactured on 65nm StrataFlash® Embedded Memory Process technology. As a member of Intel's renowned P30 family, it is engineered for applications requiring high reliability, fast read access, and execute-in-place (XIP) capabilities, making it a cornerstone in embedded systems design.
A primary strength of this memory lies in its advanced architecture. It features a multilevel cell (MLC) design, which allows two bits of data to be stored in a single memory cell, achieving a denser and more cost-effective storage solution. The device operates on a 3.0V VCC supply voltage (with a 1.8V VCC option available) and offers a fast asynchronous page read access time of 95ns. Its 128-byte page buffer significantly enhances read performance by allowing rapid sequential accesses within a page.
The interface is a 16-bit-wide multiplexed address and data bus, which is standard for parallel NOR flash. This enables efficient connection to a wide range of microprocessors and microcontrollers. The JS28F256P30T95 supports common flash memory features such as Block Locking for write protection of critical code sectors and Absolute Hardware Protection during programming via dedicated pins (RP/RESET and WP).
A critical feature for modern systems is its robust security. The device includes a One-Time Programmable (OTP) array, which can be used to store sensitive data like encryption keys or secure boot codes, permanently locking them from modification or read-out by unauthorized entities.
Applications of the Intel JS28F256P30T95 are vast and critical, spanning industries where data integrity and instant-on performance are non-negotiable. Key application areas include:
Embedded Computing: Serving as boot ROM and storage for firmware and operating systems in routers, switches, and industrial PCs.
Automotive Systems: Utilized in engine control units (ECUs), instrument clusters, and infotainment systems where extreme temperatures and harsh operating conditions demand high reliability.
Industrial Automation and Control: Found in programmable logic controllers (PLCs), robotics, and factory control systems that require deterministic performance and long-term availability.
Aerospace and Defense: Employed in avionics, mission computers, and communications equipment where radiation tolerance and secure, fail-safe operation are paramount.
Telecommunications: Acting as core storage in networking infrastructure equipment like base stations and fiber-optic transceivers.
ICGOOODFIND: The Intel JS28F256P30T95 P30 NOR Flash memory stands out as a highly reliable, secure, and performant non-volatile storage solution. Its combination of fast random access, XIP capability, advanced security features, and suitability for extreme environments makes it an enduring and trusted choice for mission-critical embedded systems across automotive, industrial, and networking sectors.
Keywords: Parallel NOR Flash, Execute-in-Place (XIP), Boot Memory, Embedded Systems, Hardware Security
