AT28HC256-90DM/883

The AT28HC256-90DM/883 is a high-speed, high-capacity CMOS EEPROM with a 256K (32K x 8) configuration. It offers a 90ns access time and operates within the military temperature range. This EEPROM is designed for applications requiring non-volatile, reprogrammable memory with fast read and write operations.

Pinout

(Note: The pin configuration below is a general representation. Refer to the specific datasheet for precise details.)

• A0-A14: Address Inputs
• Q0-Q7: Data Input/Output
• WE: Write Enable
• OE: Output Enable
• CE1,CE2: Chip Enable
• Vcc: Power Supply
• Vss: Ground

Circuit Diagram

Include a circuit diagram illustrating the connections and operation of the AT28HC256-90DM/883 EEPROM for a visual representation.

Key Features

• High-Speed Access: Offers a fast 90ns access time for efficient read and write operations.
• High Capacity: The 256K configuration provides ample storage capacity for various data storage applications.
• Military Temperature Range: Designed to operate within the military temperature range (-55°C to 125°C).
• CMOS Technology: Utilizes CMOS technology for low power consumption and reliable performance.
• Multiple Chip Enable Inputs: Supports multiple chip enable inputs for flexible memory access control.

Note: For detailed technical specifications, please refer to the AT28HC256-90DM/883 datasheet.

Application

• Embedded Systems: Suitable for non-volatile memory storage in embedded systems and microcontrollers.
• Military and Aerospace: Ideal for use in military and aerospace applications due to its extended temperature range and reliability.
• Data Logging: Used for data logging, configuration storage, and program memory in various electronic systems.

Functionality

The AT28HC256-90DM/883 is a high-speed CMOS EEPROM designed to provide non-volatile memory for storing and retrieving data in a wide range of electronic applications.

Usage Guide

• Power Supply: Connect Vcc (Pin) to the positive power supply and Vss (Pin) to the ground.
• Data Interface: Connect the data input/output pins (Q0-Q7) to the microcontroller or data bus for read and write operations.
• Control Inputs: Use the write enable (WE), output enable (OE), and chip enable (CE1, CE2) inputs to control memory access and operations.

Frequently Asked Questions

Q: Can the AT28HC256-90DM/883 be used in commercial temperature range applications?
A: While the AT28HC256-90DM/883 is designed for military temperature range, it can also operate within the commercial temperature range with appropriate performance characteristics.

Q: What is the maximum clock frequency supported by the AT28HC256-90DM/883?
A: The maximum clock frequency supported is specified in the datasheet as per the timing and operational requirements.