Micron Technology Inc. JS28F320J3D75A

Micron JS28F320J3D75A StrataFlash NOR Memory Product Summary

The Micron JS28F320J3D75A is a 32Mbit StrataFlash NOR memory IC designed for applications requiring high-reliability non-volatile storage with parallel interface. As part of Micron's established NOR flash portfolio, the JS28F320J3D75A delivers optimal performance in embedded computing, industrial controls, and digital systems where fast access times and robust data retention are essential. With a device status listed as "obsolete," engineers should conduct thorough evaluations when considering the JS28F320J3D75A for new designs or ongoing procurement, particularly in legacy applications.

Primary Features and Technical Specifications of JS28F320J3D75A

The JS28F320J3D75A provides a total memory capacity of 32Mbits, organized as 4Mx8 or 2Mx16, allowing flexibility in system architecture for either 8-bit or 16-bit data buses. The core technology is FLASH-NOR, known for its random access capability and durability. Access time is rated at 75ns, supporting applications that demand rapid read cycles. The device operates at a supply voltage range of 2.7V to 3.6V, making it compatible with various embedded system voltages. Write cycle times and interface details support parallel communication, facilitating integration into legacy or industrial systems with established parallel protocols.

Dimensional Attributes and Package Details for JS28F320J3D75A

For ease of mounting and space optimization, the JS28F320J3D75A is supplied in a 56-TSOP (Thin Small Outline Package) with a width of 18.40mm (0.724 inches). The surface mount package ensures reliable assembly in automated manufacturing environments. The standardized package and pin configuration help streamline the process of board layout and direct replacements within compatible footprints.

Performance Capabilities and Electrical Characteristics of JS28F320J3D75A

Engineered for robust operation, the JS28F320J3D75A supports an operating temperature range from -40°C to 85°C (TA), suitable for deployment in industrial, automotive, and harsh environment applications. The parallel interface and fast access time make it ideal for applications where quick boot loading and code execution are required. The combination of NOR flash technology and proven Micron manufacturing enhances data retention, endurance, and reliability, ensuring consistent performance throughout the device’s lifecycle.

Environmental Standards Compliance Information for JS28F320J3D75A

The JS28F320J3D75A meets key environmental standards, including RoHS3 compliance and a Moisture Sensitivity Level (MSL) rating of 3 (168 hours). It is unaffected by REACH regulations, ensuring continued reliability in environmentally conscious manufacturing. This compliance supports the requirements of global electronics manufacturing and facilitates certifications in end products.

Alternative and Substitute Options for JS28F320J3D75A

Given the obsolete status of the JS28F320J3D75A, engineers should identify suitable alternatives when designing new systems or maintaining existing ones. Candidates for direct replacement are typically other 32Mbit parallel NOR flash ICs with similar access times, voltage ranges, and package footprints. Selecting devices from Micron’s broader StrataFlash series or cross-referencing other manufacturers’ comparable NOR memories can help maintain continuity in performance and system integration, minimizing redesign efforts and supply risks.

Engineering Guidelines for the Selection and Use of JS28F320J3D75A

When integrating the JS28F320J3D75A, engineers must consider several factors: device lifecycle, compatibility with system voltage and data bus configuration, and the suitability of the 56-TSOP package for their manufacturing processes. Reliability under wide temperature ranges and support for environmental compliance are essential in industrial and automotive settings. For legacy products, the JS28F320J3D75A’s parallel interface and fast access time ensure seamless operation within established platforms, but sourcing and long-term supply risks require proactive planning.

Conclusion

The Micron JS28F320J3D75A StrataFlash NOR memory offers a robust solution for embedded systems requiring fast, non-volatile storage in parallel architectures. Its technical features provide design flexibility and operational reliability. However, with the model’s obsolete status, engineers and procurement professionals should carefully assess equivalent replacements and supply continuity when incorporating the JS28F320J3D75A into new or legacy designs. This guide equips technical decision-makers with a complete overview to support effective product selection and integration strategies.