Microchip Technology SST39LF402C-55-4C-EKE-T

SST39LF402C-55-4C-EKE-T - High-Performance 4Mbit Parallel Flash Memory

The SST39LF402C-55-4C-EKE-T from Microchip Technology delivers reliable non-volatile flash memory storage for embedded and industrial applications. This 4Mbit parallel flash device features a 256K x 16 memory organization with fast 55ns access time, making it ideal for code storage, data logging, and firmware applications in automotive, industrial control, and aerospace systems.

Advanced Flash Memory Technology

Built on Microchip's proven SST39 MPF™ architecture, this parallel flash memory combines high-speed performance with exceptional reliability. The device utilizes advanced CMOS technology to deliver consistent read/write operations across its entire operating temperature range, ensuring stable performance in harsh industrial environments. With sector-based architecture, the SST39LF402C enables flexible memory management and efficient firmware updates without affecting the entire memory array.

Key Features & Benefits

• Fast Access Performance: 55ns access time ensures rapid code execution and data retrieval, critical for real-time embedded systems and time-sensitive applications
• Flexible Memory Organization: 256K x 16 architecture optimized for 16-bit microcontroller systems, providing efficient data bus utilization and simplified address decoding
• Wide Operating Range: 3V to 3.6V supply voltage with 0°C to 70°C temperature range, suitable for commercial and industrial applications
• Efficient Programming: 10µs write cycle time for quick in-system updates, minimizing downtime during firmware upgrades and configuration changes
• Industry-Standard Package: 48-TSOP surface mount package for automated assembly, reducing manufacturing costs and improving board density
• RoHS Compliant: Environmentally friendly lead-free construction meeting global environmental standards
• High Endurance: Designed for 100,000 program/erase cycles minimum, ensuring long-term reliability in frequently updated applications
• Data Retention: 20-year data retention specification guarantees long-term storage integrity for critical firmware and configuration data

Programming & Reliability Features

The SST39LF402C supports both byte and word programming modes, offering flexibility for different application requirements. Software Data Protection (SDP) prevents accidental writes during power transitions or system resets. The device features automatic erase and program algorithms with internal timers, simplifying firmware development and reducing code complexity. Built-in toggle bit and data polling mechanisms provide reliable status feedback during write operations.

Real-World Applications & Use Cases

This parallel flash memory excels in applications requiring reliable code storage and frequent updates:

• Automotive Systems: Engine control units (ECUs), body control modules, and infotainment systems requiring field-upgradeable firmware
• Industrial Automation: PLCs, motor drives, and HMI controllers with configuration storage and bootloader requirements
• Medical Devices: Diagnostic equipment and patient monitoring systems requiring certified, traceable firmware storage
• Telecommunications: Network routers, switches, and base stations with remote firmware update capabilities
• Aerospace & Defense: Avionics systems and military equipment requiring high-reliability non-volatile storage
• Consumer Electronics: Set-top boxes, smart appliances, and IoT devices with over-the-air update functionality

Design Considerations & Integration

When integrating the SST39LF402C into your design, consider proper decoupling capacitors (0.1µF ceramic) placed close to the VCC pins to ensure stable operation during write cycles. The parallel interface requires careful PCB layout to minimize signal integrity issues, especially for high-speed read operations. For systems requiring in-circuit programming, ensure adequate voltage levels during power-up sequences to prevent unintended write operations.

Quality & Authenticity Guarantee

All SST39LF402C devices supplied by HQICKEY are sourced directly from authorized Microchip distributors, ensuring 100% authenticity and full manufacturer warranty coverage. Each component undergoes rigorous quality inspection and comes with complete traceability documentation, including date codes and lot numbers for aerospace and medical applications requiring component certification.

Related Products & Resources

Explore our complete range of memory semiconductor solutions including EEPROM, DRAM, SRAM, and flash memory devices from leading manufacturers. Visit our homepage for the latest semiconductor components, or check our technical blog for application notes, design guides, and industry insights.

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• SST39LF402C-55-4C-EKE-T.pdf