AT49F040-90PC

Product Overview

Category: Integrated Circuit (IC)

Use: The AT49F040-90PC is a 4-megabit (512K x 8) electrically erasable programmable read-only memory (EEPROM) IC. It is commonly used for non-volatile storage of data in various electronic devices.

Characteristics: - Non-volatile memory - Electrically erasable and programmable - High storage capacity (4 megabits) - Low power consumption - Fast access time

Package: The AT49F040-90PC is available in a 32-pin plastic DIP (Dual In-line Package) format. This package provides ease of handling and compatibility with standard IC sockets.

Essence: The essence of the AT49F040-90PC lies in its ability to store and retrieve data reliably, even when power is removed. This makes it suitable for applications where non-volatile memory is required.

Packaging/Quantity: The AT49F040-90PC is typically packaged in tubes or trays, with each tube or tray containing a specific quantity of ICs. The exact packaging and quantity may vary depending on the manufacturer.

Specifications

• Memory Size: 4 Megabits (512K x 8)
• Supply Voltage: 5V
• Access Time: 90 nanoseconds
• Operating Temperature Range: -40°C to +85°C
• Erase/Program Cycle Endurance: 10,000 cycles

Pin Configuration

The AT49F040-90PC has a total of 32 pins. The pin configuration is as follows:

1. A16
2. A15
3. A12
4. A7
5. A6
6. A5
7. A4
8. A3
9. A2
10. A1
11. A0
12. VPP
13. OE#
14. CE#
15. WE#
16. I/O0
17. I/O1
18. I/O2
19. I/O3
20. I/O4
21. I/O5
22. I/O6
23. I/O7
24. NC
25. GND
26. VCC
27. RP#
28. BYTE#
29. RESET#
30. WP#
31. A8
32. A9

Functional Features

The AT49F040-90PC offers the following functional features:

1. Electrically Erasable and Programmable: The IC can be easily erased and reprogrammed using electrical signals, eliminating the need for external erasing equipment.
2. Fast Access Time: With an access time of 90 nanoseconds, the AT49F040-90PC allows for quick retrieval of stored data.
3. Low Power Consumption: The IC operates at low power, making it suitable for battery-powered devices.
4. High Storage Capacity: With a memory size of 4 megabits, the AT49F040-90PC provides ample storage space for various applications.

Advantages and Disadvantages

Advantages: - Non-volatile memory ensures data retention even during power loss. - Easy to erase and reprogram without external equipment. - Fast access time allows for efficient data retrieval. - Low power consumption extends battery life. - High storage capacity accommodates diverse application needs.

Disadvantages: - Limited erase/program cycle endurance (10,000 cycles). - Requires careful handling to prevent damage to pins or package.

Working Principles

The AT49F040-90PC utilizes electrically controlled floating gate transistors to store and retrieve data. When programmed, charges are trapped in the floating gate, altering the transistor's behavior and storing binary information. Erasing is achieved by removing these charges from the floating gate using electrical signals.

Detailed Application Field Plans

The AT49F040-90PC finds applications in various electronic devices that require non-volatile memory, such as: 1. Microcontrollers 2. Embedded systems 3. Automotive electronics 4. Industrial control systems 5. Consumer electronics

Alternative Models

For those seeking alternatives to the AT49F040-90PC, the following models provide similar functionality: 1. AT29C040A-90JC 2. AM29F040B-90JC 3. SST39SF040-70-4C-NHE

These alternative models offer comparable storage capacity, access time, and erase/program cycle endurance.

In conclusion, the AT49F040-90PC is a 4-megabit EEPROM IC that provides reliable non-volatile memory storage. With its fast access time, low power consumption, and high storage capacity, it is well-suited for various electronic applications. However, users should