AT27C040-90JU

The AT27C040-90JU is a 4-megabit (512 K x 8) OTP EPROM designed for use in various electronic systems. This electrically programmable read-only memory features a high-speed performance and low power consumption, making it suitable for applications that require reliable non-volatile memory storage. It offers a 90ns access time and operates within a 5V supply voltage range, providing compatibility with a wide range of systems.

Pinout

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

• A0-A18: Address Inputs
• Q0-Q7: Data Outputs
• CE: Chip Enable
• OE: Output Enable
• WE: Write Enable
• NC: No Connection
• VPP: Programming Voltage
• VCC: Power Supply
• GND: Ground

Circuit Diagram

Include a circuit diagram illustrating the connections and operation of the AT27C040-90JU EPROM for a visual representation.

Key Features

• High-Speed Access: The AT27C040-90JU offers a fast 90ns access time, providing quick read operations in electronic systems.
• Low Power Consumption: This EPROM consumes minimal power during read operations, making it energy-efficient.
• 4-Megabit Density: With a capacity of 4 megabits, it provides ample non-volatile memory for data storage.
• Wide Operating Voltage Range: Operates within a 5V supply voltage, ensuring compatibility with various integrated circuits and systems.
• Reliable Storage: Offers reliable and durable non-volatile storage for program and configuration data.

Note: For detailed technical specifications, please refer to the AT27C040-90JU datasheet.

Application

• Embedded Systems: Ideal for storing program and configuration data in embedded systems.
• Microcontroller Programming: Suitable for program storage in microcontroller-based applications.
• Configuration Memory: Used for storing configuration data in various electronic devices.

Functionality

The AT27C040-90JU is an electrically programmable read-only memory designed to provide high-speed, reliable, and non-volatile memory storage for electronic systems and devices.

Usage Guide

• Address Inputs: Connect address lines A0-A18 to select the memory location for read operations.
• Data Outputs: Access data outputs Q0-Q7 for retrieving stored information from the EPROM.
• Control Signals: Utilize CE, OE, and WE pins for enabling chip, output, and write operations respectively.

Frequently Asked Questions

Q: Can the AT27C040-90JU be reprogrammed after initial programming?
A: No, the AT27C040-90JU is an OTP (One-Time Programmable) EPROM and cannot be electrically reprogrammed after the initial programming.

Q: What is the maximum programming voltage (VPP) for the AT27C040-90JU?
A: The maximum programming voltage (VPP) for the AT27C040-90JU is typically 13V.