The AM28F256-120EC is a 256Kbit (32K x 8) Flash memory manufactured by Advanced Micro Devices (AMD). It is designed for non-volatile data storage and in-system programmability, often used in embedded systems and applications where frequent updates are needed.

Applications

• Embedded Systems: Provides storage for firmware, configuration data, and boot code in embedded devices.
• Industrial Control Systems: Stores control programs and calibration data for industrial equipment.
• Telecommunications Equipment: Used for storing configuration data, software updates, and network parameters.
• Medical Devices: Provides non-volatile storage for medical instrument settings and calibration values.
• Automotive Electronics: Stores software, calibration data, and configuration settings in automotive control units.

Features

• 256Kbit (32K x 8) Organization: Offers 262,144 bits of storage capacity organized into 32,768 bytes.
• Flash Memory Technology: Electrically erasable and programmable (EEPROM), allowing in-system reprogramming.
• Single +5V Power Supply: Operates on a single 5V power source, simplifying system design.
• Fast Access Time: Provides a 120ns access time for rapid data retrieval.
• TTL Compatible Inputs/Outputs: Ensures easy interfacing with TTL logic devices.

Benefits

• Non-Volatile Storage: Retains stored data even when power is removed.
• In-System Reprogrammability: Allows for convenient software updates and configuration changes without removing the device.
• Simplified Design: Requires a single 5V power supply, reducing complexity and cost.
• Fast Data Access: Enables quick retrieval of stored information, improving system performance.
• Wide Operating Temperature Range: Suitable for a variety of environmental conditions.

Additional Details

The AM28F256-120EC comes in a JEDEC standard DIP (Dual In-Line Package) or PLCC (Plastic Leaded Chip Carrier) package. It is programmed using specific voltage sequences applied to the device pins, and it supports a sector erase feature, enabling individual memory sectors to be erased and reprogrammed. This flash memory is suitable for applications where software or data requires frequent updates, eliminating the need for physical ROM replacement. Data retention is typically greater than 10 years. Endurance of erase/write cycles must be researched. Device supports a variety of programming modes.