The RC28F256L30B is a 256-Megabit (Mb) NOR Flash memory device manufactured by Intel. It's likely organized as 32M x 8 or 16M x 16, offering flexibility for various system architectures. These NOR flash memories are commonly used for storing boot code, application code, and data in a wide range of embedded systems. The specific 'L30B' designation likely refers to speed grade and voltage characteristics.

Applications

• Embedded systems
• Networking equipment (routers, switches)
• Industrial control systems
• Automotive electronics
• Consumer electronics (e.g., set-top boxes)

Features

• Density: 256Mb (likely organized as 32M x 8 or 16M x 16)
• Interface: Parallel NOR Flash interface
• Supply Voltage: Typically 3V or 1.8V (check datasheet for specific voltage)
• Sector Erase Architecture: Facilitates efficient code updates and data storage management.
• Fast Page Mode: Enables high-speed data reads.
• Erase Suspend/Resume: Allows interruption of erase operations for improved system responsiveness.
• Security Features: Block locking capabilities to protect critical code.
• Common Flash Interface (CFI): Standard interface for device identification and feature discovery.

Benefits

• High Density: Provides significant storage capacity for complex applications.
• Fast Read Access: Enables quick boot times and efficient execution of code.
• Sector Erase: Allows for efficient and selective erasure of memory blocks, minimizing write times.
• Security Features: Protects against unauthorized access and modification of critical code.
• Wide Operating Temperature Range: Suitable for use in industrial and automotive environments.
• Long-Term Support: Intel provides long-term support for its Flash memory products.
• Reliability: NOR Flash technology is known for its high reliability and data retention.

Additional Details

The RC28F256L30B is a parallel NOR Flash memory, meaning that data is accessed via a parallel bus. The 'L30B' likely indicates a specific speed grade (e.g., 30ns access time) and voltage level. This device supports sector erase, which allows for selective erasure of individual sectors within the flash memory. Erase suspend/resume allows the system to pause and resume an erase operation, improving responsiveness. The Common Flash Interface (CFI) provides a standard way for the host system to identify the device and determine its features. Block locking prevents unauthorized writing to specific memory regions, protecting critical code from corruption.

For detailed specifications, including voltage levels, timing characteristics, and packaging options, refer to the official Intel datasheet for the RC28F256L30B.