The AM27C2048-90JI is a 2-Megabit (256K x 8) CMOS EPROM manufactured by AMD. This device provides non-volatile memory storage, retaining data even without power. Its 90ns access time allows for relatively fast data retrieval. Being a CMOS device, it consumes less power compared to older NMOS EPROMs. 'JI' likely indicates the package type.

Applications

• Embedded Systems: Commonly used for storing firmware in embedded systems such as microcontrollers.
• Networking Equipment: Storing boot code and configuration settings for network devices.
• Industrial Control Systems: Used in industrial automation equipment for storing control programs and data.
• Computer Peripherals: Stores firmware in printers, scanners, and other computer peripherals.
• Instrumentation: Used in test and measurement equipment for storing calibration data and program code.

Features

• 2-Megabit (256K x 8) Organization: Provides a storage capacity of 2,097,152 bits organized as 262,144 bytes.
• 90ns Access Time: Allows for fast data retrieval, suitable for performance-critical applications.
• CMOS Technology: Offers low power consumption.
• Single +5V Power Supply: Operates from a single 5V power source.
• Static Operation: Requires no clocks or refresh cycles.
• Three-State Output: Provides three-state outputs for simplified interfacing with microprocessor systems.

Benefits

• Non-Volatile Storage: Retains data even when power is removed.
• Fast Access Time: Improves system performance by enabling quick data access.
• Low Power Consumption: Minimizes power usage, suitable for battery-powered applications.
• Easy to Program: Can be programmed using standard EPROM programmers.
• High Reliability: Provides reliable operation over a wide temperature range.

Additional Details

The AM27C2048-90JI is often packaged in a 32-pin DIP or a surface-mount package. Programming requires the use of a dedicated EPROM programmer, and careful adherence to the manufacturer's programming specifications is essential. Erasing is achieved by exposing the device to ultraviolet light through a quartz window on the package. Consult the datasheet for specific package dimensions and other relevant details.