AT27C040-70PU

The AT27C040-70PU is a 4-megabit, low-power, 5-volt EPROM (Electrically Programmable Read-Only Memory) IC with a speed grade of 70ns. It offers non-volatile storage for data or program codes and is commonly used in embedded systems, automotive electronics, and industrial applications.

Pinout

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

• A18: Address input line 18
• A17: Address input line 17
• A16: Address input line 16
• A15-A0: Address input lines 15 to 0
• CE: Chip enable for reading
• OE: Output enable for reading
• PGM: Program enable for writing
• VPP: Programming voltage input
• NC: No connection
• VCC: Positive power supply
• GND: Ground

Circuit Diagram

Include a circuit diagram illustrating the connections and operation of the AT27C040-70PU EPROM IC for a visual representation.

Key Features

• 4-Megabit Capacity: Offers 4 megabits (512K x 8) of storage capacity for program codes or data.
• Low Power Consumption: Operates with low power, making it suitable for battery-operated devices.
• High Speed: Features a speed grade of 70ns, providing quick access to stored information.
• Wide Operating Voltage: Supports a 5V operating voltage for compatibility with various systems.
• Non-Volatile Storage: Retains stored data even when power is turned off, ensuring data integrity.

Note: For detailed technical specifications, please refer to the AT27C040-70PU datasheet.

Application

• Embedded Systems: Ideal for storing firmware and program codes in embedded systems.
• Automotive Electronics: Used in automotive applications for storing configuration data and firmware.
• Industrial Control: Suitable for industrial control systems requiring non-volatile memory storage.

Functionality

The AT27C040-70PU is designed for storing and retrieving program codes or data in electronic systems. It provides reliable non-volatile memory storage for various applications.

Usage Guide

• Addressing: Apply the appropriate address signals to access specific memory locations.
• Read Operation: Activate the chip enable (CE) and output enable (OE) pins to read data from the EPROM.
• Write Operation: Use the program enable (PGM) and programming voltage (VPP) pins for writing data to the EPROM.

Frequently Asked Questions

Q: Can the AT27C040-70PU be reprogrammed?
A: No, the AT27C040-70PU is an EPROM (Electrically Programmable Read-Only Memory) and is typically a one-time programmable device.

Q: What is the typical lifespan of the AT27C040-70PU?
A: The AT27C040-70PU has a long lifespan and can retain data for many years under normal operating conditions.