AT27C040-90PI

Product Overview

Category: Integrated Circuit (IC)

Use: The AT27C040-90PI is a programmable read-only memory (PROM) IC. It is commonly used for storing non-volatile data that needs to be retained even when power is turned off.

Characteristics: - Non-volatile memory - High storage capacity - Fast access time - Low power consumption

Package: The AT27C040-90PI is available in a 32-pin DIP (Dual In-line Package) format.

Essence: The essence of the AT27C040-90PI is its ability to store and retrieve data reliably, making it suitable for applications where permanent data storage is required.

Packaging/Quantity: The AT27C040-90PI is typically packaged in tubes or trays, with quantities varying depending on the supplier.

Specifications

• Memory Capacity: 4 Megabits (512 Kbytes)
• Access Time: 90 nanoseconds
• Operating Voltage: 5V
• Input/Output Voltage Levels: TTL compatible
• Erase/Program Cycle Endurance: 10,000 cycles
• Data Retention: 20 years

Pin Configuration

The AT27C040-90PI has a total of 32 pins. Here is the detailed pin configuration:

1. A16
2. A15
3. A12
4. A7
5. A6
6. A5
7. A4
8. A3
9. A2
10. A1
11. A0
12. E (Chip Enable)
13. G (Output Enable)
14. VCC (+5V Power Supply)
15. Q7
16. Q6
17. Q5
18. Q4
19. Q3
20. Q2
21. Q1
22. Q0
23. VSS (Ground)
24. A14
25. A13
26. A8
27. A9
28. A11
29. A10
30. OE (Output Enable)
31. CE (Chip Enable)
32. WE (Write Enable)

Functional Features

• Easy to program and erase data
• High-speed access for efficient data retrieval
• Low power consumption for energy efficiency
• Reliable data retention for long-term storage
• TTL compatible input/output voltage levels for easy integration with other components

Advantages and Disadvantages

Advantages: - Large storage capacity - Fast access time - Low power consumption - Long data retention period - Easy to integrate into existing systems

Disadvantages: - Limited erase/program cycle endurance - Requires external programming equipment - Relatively higher cost compared to other memory technologies

Working Principles

The AT27C040-90PI uses a technology called electrically erasable programmable read-only memory (EEPROM). It stores data by trapping electric charges in specific memory cells, which can be programmed or erased using electrical signals. When the chip is powered on, the stored data can be accessed by sending appropriate address signals.

Detailed Application Field Plans

The AT27C040-90PI finds applications in various fields, including: 1. Embedded systems 2. Automotive electronics 3. Industrial control systems 4. Consumer electronics 5. Communication devices

In embedded systems, it can be used to store firmware or configuration data. In automotive electronics, it can store critical information like calibration data or vehicle parameters. Industrial control systems can utilize it for storing program code or configuration settings. Consumer electronics such as gaming consoles or set-top boxes can benefit from its non-volatile storage capabilities. Communication devices like routers or modems can use it for firmware storage.

Detailed and Complete Alternative Models

1. AT27C080-90PI: 8 Megabit (1 Mbyte) capacity, same characteristics and package as AT27C040-90PI.
2. AT27C010-90PI: 1 Megabit (128 Kbyte) capacity, same characteristics and package as AT27C040-90PI.
3. AT27C256R-45PI: 256 Kilobit (32 Kbyte) capacity, same characteristics and package as AT27C040-90PI.

These alternative models offer different memory capacities while maintaining similar characteristics and package options to the AT27C040-90PI.

In conclusion, the AT27C040-90PI is a versatile programmable read-only memory IC with a large storage capacity, fast access time, and low power consumption. It finds applications in various fields and has alternative models available to suit different memory requirements.