AT49F002-90VI

Product Overview

Category

AT49F002-90VI belongs to the category of Flash Memory Chips.

Use

It is primarily used for data storage and retrieval in electronic devices such as computers, smartphones, and digital cameras.

Characteristics

• Non-volatile memory: Retains data even when power is turned off.
• High-speed operation: Enables fast read and write operations.
• Large storage capacity: Offers a capacity of 2 megabits (256 kilobytes).
• Low power consumption: Optimized for energy efficiency.
• Wide operating voltage range: Operates within a voltage range of 4.5V to 5.5V.

Package

AT49F002-90VI is available in a standard 32-pin plastic DIP (Dual In-line Package).

Essence

The essence of AT49F002-90VI lies in its ability to provide reliable and high-performance non-volatile storage solutions for various electronic devices.

Packaging/Quantity

This product is typically packaged in reels or tubes, with each reel/tube containing a specific quantity of chips. The exact packaging and quantity may vary depending on the manufacturer's specifications.

Specifications

• Organization: 256K x 8 bits
• Access Time: 90 nanoseconds
• Supply Voltage: 4.5V - 5.5V
• Standby Current: 100µA (typical)
• Operating Temperature Range: -40°C to +85°C
• Endurance: 10,000 erase/write cycles (minimum)

Detailed Pin Configuration

1. A16
2. A14
3. A12
4. A7
5. A6
6. A5
7. A4
8. A3
9. A2
10. A1
11. A0
12. VPP
13. WE#
14. OE#
15. CE#
16. BYTE#
17. NC
18. DQ0
19. DQ1
20. DQ2
21. DQ3
22. DQ4
23. DQ5
24. DQ6
25. DQ7
26. RY/BY#
27. RESET#
28. VCC
29. GND
30. A8
31. A9
32. A11

Functional Features

• Erase and Write Operations: Allows for data erasure and writing at the byte level.
• Sector Lockout: Provides protection against accidental erasure or modification of specific sectors.
• Hardware Reset: Enables a hardware reset function to restore the device to its initial state.
• Ready/Busy Output: Indicates the status of the device during read, erase, and write operations.

Advantages and Disadvantages

Advantages

• Non-volatile memory ensures data retention even without power.
• High-speed operation allows for quick data access.
• Large storage capacity accommodates various applications.
• Low power consumption prolongs battery life in portable devices.
• Wide operating voltage range enhances compatibility with different systems.

Disadvantages

• Limited endurance compared to other types of memory.
• Higher cost per bit compared to some alternative memory technologies.
• Susceptible to electromagnetic interference (EMI) due to its electronic nature.

Working Principles

AT49F002-90VI utilizes a floating gate transistor technology known as Flash memory. It stores data by trapping electric charges within insulated floating gates, which can be electrically programmed and erased. The stored charges represent binary information that can be read, modified, or erased as needed.

Detailed Application Field Plans

AT49F002-90VI finds application in various electronic devices, including but not limited to: - Personal computers - Laptops and notebooks - Smartphones and tablets - Digital cameras - Gaming consoles - Automotive electronics - Industrial control systems

Detailed and Complete Alternative Models

1. AT49F002N-90VI: Similar to AT49F002-90VI, but with a different package type (PLCC).
2. AT49F002T-12VI: Offers a faster access time of 12 nanoseconds.
3. AT49F002NT-55VI: Combines the features of AT49F002-90VI and AT49F002N-90VI.

These alternative models provide similar functionality and can be considered as substitutes based on specific requirements and compatibility considerations.

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