AT27C040-70TI

Product Overview

Category

AT27C040-70TI belongs to the category of programmable read-only memory (PROM) chips.

Use

This product is commonly used in electronic devices for storing non-volatile data that needs to be permanently programmed during manufacturing.

Characteristics

• Non-volatile: The stored data remains intact even when power is removed.
• Programmable: The memory can be written to only once during the manufacturing process.
• High capacity: The AT27C040-70TI has a storage capacity of 4 megabits (512 kilobytes).
• Fast access time: It operates at a speed of 70 nanoseconds.

Package

The AT27C040-70TI is available in a 32-pin plastic package, which provides protection and easy integration into electronic circuits.

Essence

The essence of this product lies in its ability to store permanent data in electronic devices, ensuring reliable and secure operation.

Packaging/Quantity

The AT27C040-70TI is typically packaged in reels or tubes, with each reel containing a specific quantity of chips. The exact quantity may vary depending on the manufacturer's specifications.

Specifications

• Memory Capacity: 4 Megabits (512 Kilobytes)
• Access Time: 70 Nanoseconds
• Supply Voltage: 5V
• Operating Temperature Range: -40°C to +85°C
• Package Type: 32-pin Plastic Package

Detailed Pin Configuration

The AT27C040-70TI has a total of 32 pins, each serving a specific purpose. The pin configuration is as follows:

1. A0 - Address Input
2. A1 - Address Input
3. A2 - Address Input
4. A3 - Address Input
5. A4 - Address Input
6. A5 - Address Input
7. A6 - Address Input
8. A7 - Address Input
9. A8 - Address Input
10. A9 - Address Input
11. A10 - Address Input
12. A11 - Address Input
13. A12 - Address Input
14. A13 - Address Input
15. A14 - Address Input
16. A15 - Address Input
17. /OE - Output Enable
18. /CE - Chip Enable
19. DQ0 - Data Output
20. DQ1 - Data Output
21. DQ2 - Data Output
22. DQ3 - Data Output
23. DQ4 - Data Output
24. DQ5 - Data Output
25. DQ6 - Data Output
26. DQ7 - Data Output
27. VCC - Power Supply
28. GND - Ground
29. NC - No Connection
30. NC - No Connection
31. /WE - Write Enable
32. /PGM - Program

Functional Features

• Non-volatile storage: The AT27C040-70TI retains data even when power is removed.
• One-time programmable: The memory can be programmed only once during manufacturing.
• High-speed access: It provides fast access to stored data with a low access time of 70 nanoseconds.

Advantages and Disadvantages

Advantages

• Reliable and secure storage of permanent data.
• Fast access time for efficient data retrieval.
• Easy integration into electronic circuits due to its standard package.

Disadvantages

• Limited to one-time programming, making it unsuitable for applications requiring frequent data updates.
• Relatively lower storage capacity compared to modern memory technologies.

Working Principles

The AT27C040-70TI utilizes a technology called floating-gate MOS (metal-oxide-semiconductor) to store data. During the manufacturing process, electrical charges are trapped in the floating gate, representing the programmed data. These charges can be retained for an extended period, ensuring non-volatile storage.

Detailed Application Field Plans

The AT27C040-70TI finds applications in various electronic devices and systems, including: 1. Embedded systems 2. Automotive electronics 3. Industrial control systems 4. Medical equipment 5. Consumer electronics

Detailed and Complete Alternative Models

1. AT27C010-70PU: 1 Megabit (128 Kilobytes) capacity, 70 nanoseconds access time.
2. AT27C080-90JC: 8 Megabit (1 Megabyte) capacity, 90 nanoseconds access time.
3. AT27C256R-45PU: 256 Kilobit (32 Kilobytes) capacity, 45 nanoseconds access time.

These alternative models offer different capacities and access times to suit specific application requirements.

In conclusion, the AT27C040-70TI is a programmable read-only memory chip that provides reliable and secure storage of permanent data in electronic devices. With