The Winbond W28V400TT85C is a 4-Megabit (512K x 8) CMOS Flash memory device. This memory chip is designed for systems requiring non-volatile storage for code and data, providing reliable data retention and fast read access times.

Applications

• Embedded systems: For storing firmware and configuration data in devices like routers and IoT devices.
• Industrial control equipment: As storage for operating systems and application code in PLCs and other industrial controllers.
• Networking equipment: In switches and routers for storing boot code and network configurations.
• Point-of-sale (POS) terminals: For storing transaction data and application software.
• Medical devices: In medical instruments for storing calibration data and device settings.

Features

• High Density: 4-Megabit (512K x 8) storage capacity.
• Fast Access Time: 85ns access time for quick data retrieval.
• Single Power Supply: Operates from a single 3V power supply.
• Sector Architecture: Offers a sector architecture for flexible memory management.
• Automatic Write Protection: Includes write protection mechanisms to prevent accidental data corruption.
• Low Power Consumption: Designed for low power operation, extending battery life in portable applications.
• CMOS Technology: Utilizes CMOS technology for high performance and low power consumption.

Benefits

• Reliable Data Storage: Non-volatile storage ensures data retention even when power is removed.
• Fast Read Performance: Quick access times improve system responsiveness.
• Easy Integration: The standard JEDEC pinout simplifies integration into existing systems.
• Flexible Memory Management: Sector architecture allows for efficient use of memory space.
• Data Protection: Write protection features prevent accidental data loss.

Additional Details

The W28V400TT85C typically comes in a TSOP package. The operating temperature range, voltage tolerance, and data retention characteristics are specified in the Winbond datasheet. Specific programming algorithms and timing requirements for writing and erasing data are also detailed in the datasheet.