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PSD854F2-90M from WSI

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PSD854F2-90M

Manufacturer: WSI

Flash In-System Programmable (ISP) Peripherals For 8-bit MCUs, 5V

Partnumber Manufacturer Quantity Availability
PSD854F2-90M,PSD854F290M WSI 234 In Stock

Description and Introduction

Flash In-System Programmable (ISP) Peripherals For 8-bit MCUs, 5V The **PSD854F2-90M** is a highly integrated programmable system device (PSD) designed for embedded applications requiring efficient memory and peripheral management. Combining flash memory, SRAM, and programmable logic in a single chip, this component simplifies system design while enhancing performance and reliability.  

With a 90ns access time, the PSD854F2-90M ensures rapid data retrieval, making it suitable for real-time processing in industrial, automotive, and consumer electronics. Its onboard flash memory supports in-system programming (ISP), allowing firmware updates without removing the device from the circuit. The integrated SRAM provides volatile storage for dynamic data handling, while the configurable I/O ports offer flexibility for interfacing with external peripherals.  

Built with low-power CMOS technology, the PSD854F2-90M is optimized for energy-efficient operation, extending battery life in portable applications. Its robust architecture includes security features to protect firmware integrity, preventing unauthorized access.  

Engineers favor this component for its ability to reduce board space, lower component count, and streamline development cycles. Whether used in microcontroller-based systems or standalone embedded designs, the PSD854F2-90M delivers a reliable, high-performance solution for complex electronic applications.

Application Scenarios & Design Considerations

Flash In-System Programmable (ISP) Peripherals For 8-bit MCUs, 5V

Alternative Part Number

  • M29F400BB-90N6 --: 4 Mbit flash memory in the same TSOP/PLCC class with 90 ns access time, suitable as a functional substitute for the PSD854F2-90M flash array.
  • AM29F400B-90SC --: 4 Mbit CMOS flash with 90 ns speed grade and compatible byte/word organization, widely used as a drop-in replacement in legacy designs.
  • SST39SF040-70-4C-NHE --: 4 Mbit parallel flash with similar pinout and faster 70 ns access, offering a readily available alternative when exact PSD timing is not critical.

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