AT49F040A-55JI

Product Overview

Category: Integrated Circuit (IC)

Use: The AT49F040A-55JI is a non-volatile memory IC that is commonly used for data storage in various electronic devices.

Characteristics: - Non-volatile: Retains data even when power is turned off - High capacity: 4 megabits (512 kilobytes) - Fast access time: 55 nanoseconds - Low power consumption - Easy to integrate into circuit designs

Package: The AT49F040A-55JI is available in a 32-pin PLCC (Plastic Leaded Chip Carrier) package.

Essence: This IC serves as a reliable and efficient solution for storing and retrieving data in electronic systems.

Packaging/Quantity: The AT49F040A-55JI is typically sold in reels or tubes, with a quantity of 1000 units per reel/tube.

Specifications

• Memory Type: Flash
• Memory Size: 4 Megabits (512 Kilobytes)
• Access Time: 55 Nanoseconds
• Supply Voltage: 5V
• Operating Temperature Range: -40°C to +85°C
• Package Type: PLCC-32

Pin Configuration

The AT49F040A-55JI has a total of 32 pins. The pin configuration is as follows:

Pin 1: A16 Pin 2: A14 Pin 3: A12 ... Pin 30: VCC Pin 31: A15 Pin 32: A13

For the complete pin configuration diagram, please refer to the datasheet provided by the manufacturer.

Functional Features

• Byte-wide programming and erasing capability
• Sector erase architecture for efficient memory management
• Hardware and software data protection mechanisms
• Low power consumption during standby mode
• Fast programming and erase operations

Advantages and Disadvantages

Advantages: - Non-volatile memory ensures data retention even without power - High capacity allows for storing large amounts of data - Fast access time enables quick retrieval of information - Easy integration into circuit designs simplifies implementation - Sector erase architecture provides efficient memory management

Disadvantages: - Limited storage capacity compared to newer memory technologies - Relatively slower access times compared to some modern memory ICs - Requires external programming and erasing circuitry

Working Principles

The AT49F040A-55JI utilizes flash memory technology to store and retrieve data. It employs a combination of floating-gate transistors and charge storage elements to store binary information. The memory cells can be electrically programmed and erased, allowing for flexible data manipulation.

During programming, an electrical charge is applied to the floating gate of each memory cell, altering its threshold voltage and storing the desired data. Erasing is achieved by removing the charge from the floating gate, resetting the memory cell to its initial state.

The IC incorporates various control circuits and logic to facilitate data transfer between the memory array and the external system.

Detailed Application Field Plans

The AT49F040A-55JI finds applications in a wide range of electronic devices, including but not limited to: - Microcontrollers - Embedded systems - Consumer electronics - Automotive electronics - Industrial equipment

Its high capacity, fast access time, and non-volatile nature make it suitable for storing program code, configuration data, firmware, and other critical information in these applications.

Alternative Models

For alternative models with similar functionality, consider the following options: - AT49F040B-55JI - AT49F040-70JI - AT49F040T-90JI

These alternatives offer similar specifications and pin configurations, providing flexibility in choosing the most suitable IC for specific applications.

In conclusion, the AT49F040A-55JI is a reliable non-volatile memory IC with high capacity and fast access time. Its ease of integration and sector erase architecture make it a popular choice for various electronic devices. However, it should be noted that newer memory technologies may offer higher capacities and faster speeds.