AT29BV040A-20JU

Product Overview

Category

AT29BV040A-20JU belongs to the category of non-volatile memory devices.

Use

This product is primarily used for storing and retrieving digital information in electronic systems.

Characteristics

• Non-volatile: The stored data is retained even when power is removed.
• High capacity: The AT29BV040A-20JU has a storage capacity of 4 megabits (512 kilobytes).
• Fast access time: It operates with a maximum access time of 20 nanoseconds.
• Low power consumption: The device is designed to minimize power usage during operation.
• Wide operating voltage range: It can operate within a voltage range of 2.7V to 5.5V.

Package

The AT29BV040A-20JU is available in a standard 32-pin PLCC (Plastic Leaded Chip Carrier) package.

Essence

The essence of this product lies in its ability to provide reliable and non-volatile storage for electronic systems, ensuring data integrity even in the absence of power.

Packaging/Quantity

The AT29BV040A-20JU is typically packaged in reels or tubes, with each containing a specific quantity of devices. The exact quantity may vary depending on the manufacturer's specifications.

Specifications

• Storage Capacity: 4 Megabits (512 Kilobytes)
• Access Time: 20 Nanoseconds
• Operating Voltage Range: 2.7V to 5.5V
• Package Type: 32-pin PLCC

Detailed Pin Configuration

The AT29BV040A-20JU has a total of 32 pins, each serving a specific function. The pin configuration is as follows:

1. A9 - Address Input
2. A8 - Address Input
3. A7 - Address Input
4. A6 - Address Input
5. A5 - Address Input
6. A4 - Address Input
7. A3 - Address Input
8. A2 - Address Input
9. A1 - Address Input
10. A0 - Address Input
11. CE - Chip Enable
12. OE - Output Enable
13. WE - Write Enable
14. NC - No Connection
15. DQ0 - Data Input/Output
16. DQ1 - Data Input/Output
17. DQ2 - Data Input/Output
18. DQ3 - Data Input/Output
19. DQ4 - Data Input/Output
20. DQ5 - Data Input/Output
21. DQ6 - Data Input/Output
22. DQ7 - Data Input/Output
23. VCC - Power Supply
24. GND - Ground
25. RP - Ready/Busy Output
26. BYTE - Byte/Word Organization
27. RESET - Reset Input
28. WP - Write Protect
29. VPP - Programming Voltage
30. NC - No Connection
31. NC - No Connection
32. NC - No Connection

Functional Features

The AT29BV040A-20JU offers several functional features that enhance its usability and performance:

1. Chip Enable (CE): This input signal enables or disables the device, controlling access to the memory.
2. Output Enable (OE): When enabled, this signal allows data to be read from the memory.
3. Write Enable (WE): This input signal enables or disables write operations to the memory.
4. Ready/Busy Output (RP): This output signal indicates the status of the device, whether it is ready for operation or busy with internal processes.
5. Byte/Word Organization (BYTE): This input signal determines the organization of data storage, allowing selection between byte or word mode.
6. Reset Input (RESET): When activated, this input signal resets the device to its initial state.
7. Write Protect (WP): This input signal protects the memory from accidental write operations.
8. Programming Voltage (VPP): This pin provides the necessary voltage for programming the memory.

Advantages and Disadvantages

Advantages

• Non-volatile storage ensures data retention even during power loss.
• High storage capacity allows for storing large amounts of data.
• Fast access time enables quick retrieval of information.
• Low power consumption minimizes energy usage.
• Wide operating voltage range provides flexibility in various electronic systems.

Disadvantages

• Limited storage capacity compared to other memory technologies.
• Relatively higher cost per unit compared to some alternatives.
• Programming and erasing cycles have a finite limit.

Working Principles

The AT29BV040A-20JU is based on Flash memory technology. It utilizes floating-gate transistors to store digital information. The memory cells