AT49F040-12JI

Product Overview

Category

AT49F040-12JI belongs to the category of Flash Memory ICs.

Use

It is primarily used for storing and retrieving digital information in electronic devices.

Characteristics

• Non-volatile memory: Retains data even when power is turned off.
• High storage capacity: The AT49F040-12JI has a storage capacity of 4 megabits (512 kilobytes).
• Fast access time: It has a maximum access time of 120 nanoseconds.
• Low power consumption: Designed to operate with minimal power requirements.
• Wide operating voltage range: Can function within a voltage range of 2.7V to 5.5V.

Package

The AT49F040-12JI is available in a 32-pin PLCC (Plastic Leaded Chip Carrier) package.

Essence

The essence of AT49F040-12JI lies in its ability to provide reliable and high-capacity non-volatile memory storage for various electronic devices.

Packaging/Quantity

The AT49F040-12JI is typically packaged in reels or tubes, with each containing a specific quantity of ICs. The exact packaging and quantity may vary depending on the manufacturer.

Specifications

• Storage Capacity: 4 Megabits (512 Kilobytes)
• Access Time: 120 Nanoseconds (Max)
• Operating Voltage Range: 2.7V - 5.5V
• Package Type: 32-pin PLCC

Detailed Pin Configuration

The AT49F040-12JI has a total of 32 pins. Here is the 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. VCC
13. OE#
14. CE#
15. WE#
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. VSS
29. RP#
30. WP#
31. A8
32. A9

Functional Features

• Erase and Program Operations: The AT49F040-12JI supports both sector erase and byte program operations, allowing for flexible data manipulation.
• Hardware Data Protection: It features a hardware protection mechanism to prevent accidental erasure or programming of data.
• Automatic Sleep Mode: The IC enters a low-power sleep mode when not in use, reducing power consumption.

Advantages and Disadvantages

Advantages

• High storage capacity for storing large amounts of data.
• Fast access time enables quick retrieval of information.
• Non-volatile memory ensures data retention even during power loss.
• Wide operating voltage range allows compatibility with various systems.
• Hardware data protection prevents accidental data loss.

Disadvantages

• Limited write endurance: Flash memory has a finite number of write cycles before it may become unreliable.
• Relatively higher cost compared to other types of memory.

Working Principles

The AT49F040-12JI utilizes a technology called NOR flash memory. It stores data by trapping electrons in a floating gate, which can be electrically programmed or erased. When reading data, the stored charge is detected, allowing retrieval of the stored information.

Detailed Application Field Plans

The AT49F040-12JI finds applications in various electronic devices that require non-volatile memory storage. Some common application fields include:

1. Consumer Electronics: Used in digital cameras, MP3 players, and portable gaming devices for data storage.
2. Automotive Systems: Employed in car infotainment systems, instrument clusters, and engine control units for storing critical information.
3. Industrial Control Systems: Utilized in programmable logic controllers (PLCs), robotics, and automation systems for data storage and firmware updates.

Detailed and Complete Alternative Models

• AT49F040-12TC: Similar to AT49F040-12JI but available in a 32-pin TSOP (Thin Small Outline Package) package.
• AT49F040-90JC: Offers a slower access time of 90 nanoseconds but operates within the same voltage range.
• AT49F040-70PI: Packaged in a 32-pin DIP (Dual Inline Package) format, suitable for through-hole mounting.

These alternative models provide similar functionality to the AT49F040-12JI but may differ in package type, access time, or other specifications.

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