The AM28F020-90JI is a 2 Megabit (256K x 8-bit) Flash memory device manufactured by Advanced Micro Devices (AMD). It is a non-volatile memory that can be electrically erased and reprogrammed in-system.

Applications

• Embedded Systems: Used for storing firmware, boot code, and configuration data in embedded systems, such as microcontrollers and industrial control devices.
• BIOS Storage: Employed in computer systems to store the BIOS (Basic Input/Output System) firmware.
• Networking Equipment: Utilized in routers, switches, and modems for storing operating system code and configuration parameters.
• Data Loggers: Integrated into data loggers for storing recorded data in a non-volatile manner.
• Medical Devices: Found in medical instruments for storing calibration data and program code.
• Automotive Electronics: Used in automotive control units for storing engine management software and other critical data.

Features

• 2 Megabit Capacity: Stores 2,097,152 bits of data (256KB).
• Flash Memory Technology: Electrically erasable and programmable in-system.
• 90ns Access Time: Provides fast access to stored data (90 nanoseconds).
• Single 5V Supply: Operates on a single 5V power supply.
• Sector Erase: Allows for selective erasure of memory sectors, minimizing erase time.
• JEDEC Standard Pinout: Follows the JEDEC standard pinout for Flash memory devices.

Benefits

• Non-Volatile Storage: Retains data even when power is removed.
• In-System Reprogrammability: Can be erased and reprogrammed without removing the device from the circuit.
• High Reliability: Provides reliable data storage for critical applications.
• Fast Access Time: Enables quick retrieval of data, improving system performance.
• Cost-Effective: Provides a cost-effective solution for storing firmware and configuration data.

Additional Details

The AM28F020-90JI is typically programmed using a dedicated Flash memory programmer or through in-system programming interfaces. The 'JI' suffix typically refers to the package type, indicating a J-leaded package such as a PLCC (Plastic Leaded Chip Carrier). Compared to the AM28F020-200PC, this version offers a significantly faster access time of 90ns compared to 200ns. Detailed information regarding programming voltages, erase/program cycles, operating temperature ranges, and specific timing characteristics can be found in the manufacturer's datasheet.