AT28BV256-20SU

The AT28BV256-20SU is a 256K (32K x 8) Parallel EEPROM with a 200ns access time, operating in a supply voltage range of 4.5V to 5.5V.It offers non-volatile storage for critical data in various digital systems, providing reliable and long-term memory functionality.

Pinout

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

• A0-A14:Address Inputs
• DQ0-DQ7:Data Input/Output
• CE:Chip Enable
• OE:Output Enable
• WE:Write Enable
• VCC:Supply Voltage
• GND:Ground

Circuit Diagram

Include a circuit diagram illustrating the connections and operation of the AT28BV256-20SU Parallel EEPROM for better understanding.

Key Features

• High-Speed Access Time: With a 200ns access time, the AT28BV256-20SU offers quick data retrieval and storage operations.
• Wide Operating Voltage Range: This EEPROM can operate within a supply voltage range of 4.5V to 5.5V, accommodating various system requirements.
• Non-Volatile Storage: The AT28BV256-20SU retains stored data even when power is removed, ensuring data integrity and reliability.
• Extended Data Retention: Capable of retaining stored data for extended periods, making it suitable for critical information storage.
• Multiple Address and Data Inputs: Features 15 address inputs and 8 data input/output lines for efficient data storage and retrieval.

Note:For detailed technical specifications, please refer to the AT28BV256-20SU datasheet.

Application

• Embedded Systems: Ideal for storing configuration data, program codes, and calibration values in embedded systems.
• Data Logging: Suitable for data logging applications where non-volatile storage of sensor readings and event logs is required.
• Security Systems: Used in security systems for storing access codes, user information, and log data securely.

Functionality

The AT28BV256-20SU Parallel EEPROM provides reliable non-volatile storage for critical data in digital systems. It offers fast access times and a wide range of operating voltages, making it versatile for various applications.

Usage Guide

• Power Supply: Connect VCC (Pin 28) to the supply voltage (4.5V to 5.5V) and GND (Pin 1) to ground.
• Data Interfacing: Use the address and data input/output pins to read from and write to the EEPROM memory.
• Control Signals: Utilize the CE, OE, and WE pins for chip enable, output enable, and write enable operations, respectively.

Frequently Asked Questions

Q:What is the access time of the AT28BV256-20SU EEPROM?
A:The AT28BV256-20SU has an access time of 200ns, providing fast data retrieval capabilities.

Q:Can the AT28BV256-20SU retain data without power?
A:Yes, the AT28BV256-20SU is a non-volatile memory device that can retain stored data even when power is disconnected.