The AT49F040 is a 4-megabit (512K x 8) CMOS flash memory from Atmel. It's designed for applications requiring non-volatile storage of data and program code. This device offers in-system reprogrammability, making it suitable for firmware updates and data logging in various electronic systems.

Applications

• Embedded systems
• Firmware storage for microcontrollers
• Data logging applications
• Industrial control systems
• Consumer electronics

Features

• Fast access time
• Single 5V power supply
• Sector erase architecture
• Automatic write and erase protection
• CMOS technology for low power dissipation
• JEDEC standard pinout
• Available in various package options (PDIP, PLCC, TSOP)

Benefits

• In-system reprogrammability allows for easy firmware updates and data modification without removing the device from the system.
• Fast access time ensures quick data retrieval and program execution.
• Sector erase architecture allows for efficient memory management, enabling selective erasure of memory blocks.
• Automatic write and erase protection prevents accidental data corruption due to power fluctuations or system errors.
• Low power consumption makes it suitable for battery-powered applications.

Additional Details

The AT49F040 utilizes a sector erase architecture, dividing the memory into smaller, independently erasable sectors. This allows for more efficient memory management compared to devices that require full chip erasure. The device also features automatic write and erase protection, preventing accidental data corruption. It's commonly used in applications where firmware updates are required or where non-volatile storage of configuration data is necessary. The availability of different package options provides flexibility in system design and integration.