AT49F040-90PI

Product Overview

Category: Integrated Circuit (IC)

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

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

Package: The AT49F040-90PI is available in a 32-pin plastic DIP (Dual In-line Package). This package provides easy integration into circuit boards and ensures reliable connections.

Essence: The essence of the AT49F040-90PI lies in its ability to store data reliably without the need for continuous power supply. It offers high storage capacity and fast access times, making it suitable for a wide range of applications.

Packaging/Quantity: The AT49F040-90PI 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
• Data Retention: 10 years
• Endurance: 100,000 erase/write cycles

Pin Configuration

The AT49F040-90PI has a total of 32 pins, which are assigned specific functions as follows:

1. A16 - Address Input
2. A15 - Address Input
3. A12 - Address Input
4. A7 - Address Input
5. A6 - Address Input
6. A5 - Address Input
7. A4 - Address Input
8. A3 - Address Input
9. A2 - Address Input
10. A1 - Address Input
11. A0 - Address Input
12. VCC - Power Supply
13. OE# - Output Enable
14. CE# - Chip Enable
15. WE# - Write Enable
16. I/O0 - Data Input/Output
17. I/O1 - Data Input/Output
18. I/O2 - Data Input/Output
19. I/O3 - Data Input/Output
20. I/O4 - Data Input/Output
21. I/O5 - Data Input/Output
22. I/O6 - Data Input/Output
23. I/O7 - Data Input/Output
24. RY/BY# - Ready/Busy Output
25. RESET# - Reset Input
26. NC - No Connection
27. GND - Ground
28. A14 - Address Input
29. A13 - Address Input
30. A8 - Address Input
31. A9 - Address Input
32. A11 - Address Input

Functional Features

The AT49F040-90PI offers the following functional features:

• Electrically erasable and programmable memory allows for easy data modification.
• Non-volatile storage ensures data retention even when power is disconnected.
• Fast access time enables quick retrieval of stored information.
• Low power consumption makes it suitable for battery-powered devices.
• Reliable operation in a wide temperature range (-40°C to +85°C).

Advantages and Disadvantages

Advantages: - High storage capacity of 4 megabits. - Fast access time of 90 nanoseconds. - Easy integration into circuit boards with a standard 32-pin DIP package. - Low power consumption for energy-efficient operation. - Reliable data retention for up to 10 years.

Disadvantages: - Limited endurance of 100,000 erase/write cycles. - Requires careful handling to prevent damage to the IC pins. - May not be suitable for applications requiring larger memory capacities.

Working Principles

The AT49F040-90PI operates based on the principles of electrically erasable programmable read-only memory (EEPROM). It uses a combination of electrical signals and programming algorithms to store and retrieve data. When the chip enable (CE#) and output enable (OE#) signals are activated, the addressed data can be read from or written to the memory cells. The write enable (WE#) signal is used to initiate the programming or erasing of data.

Detailed Application Field Plans

The AT49F040-90PI finds applications in various electronic devices that require non-volatile storage. Some potential application fields include: 1. Consumer electronics: Used in digital cameras, set-top boxes, and portable media players for storing firmware, configuration data, and user settings. 2