AT27C040-90TC

Product Overview

Category

AT27C040-90TC belongs to the category of programmable read-only memory (PROM) chips.

Use

This product is primarily used for storing data that needs to be permanently written and cannot be modified or erased. It is commonly used in applications where non-volatile memory is required.

Characteristics

• Non-volatile: The data stored in AT27C040-90TC remains intact even when power is removed.
• High storage capacity: This chip has a storage capacity of 4 megabits (512 kilobytes).
• Fast access time: With an access time of 90 nanoseconds, it provides quick retrieval of data.
• Low power consumption: AT27C040-90TC operates at low power levels, making it suitable for battery-powered devices.

Package

AT27C040-90TC is available in a 32-pin Thin Small Outline Package (TSOP). This package offers a compact form factor and easy integration into electronic circuits.

Essence

The essence of AT27C040-90TC lies in its ability to provide reliable and non-volatile storage of data, ensuring that the information remains intact even in the absence of power.

Packaging/Quantity

AT27C040-90TC is typically packaged in reels containing multiple units. The exact quantity may vary depending on the manufacturer's specifications.

Specifications

• Storage Capacity: 4 Megabits (512 Kilobytes)
• Access Time: 90 Nanoseconds
• Supply Voltage: 5V
• Operating Temperature Range: -40°C to +85°C
• Package Type: 32-pin TSOP

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. /OE (Output Enable)
13. /CE (Chip Enable)
14. VSS (Ground)
15. DQ0
16. DQ1
17. DQ2
18. DQ3
19. DQ4
20. DQ5
21. DQ6
22. DQ7
23. VCC (Power Supply)
24. /WE (Write Enable)
25. NC (No Connection)
26. NC
27. NC
28. NC
29. NC
30. NC
31. NC
32. NC

Functional Features

• Non-volatile storage: AT27C040-90TC retains data even when power is removed.
• High-speed access: The chip provides quick access to stored data with a low access time of 90 nanoseconds.
• Easy integration: The 32-pin TSOP package allows for easy integration into electronic circuits.
• Low power consumption: AT27C040-90TC operates at low power levels, making it suitable for battery-powered devices.

Advantages and Disadvantages

Advantages

• Reliable non-volatile storage
• Fast access time
• Compact package size
• Low power consumption

Disadvantages

• Data cannot be modified or erased once written
• Limited storage capacity compared to other memory technologies

Working Principles

AT27C040-90TC utilizes a technology called electrically programmable read-only memory (EPROM). It stores data by using electrical charges to trap electrons in specific memory cells. These trapped charges represent the binary values of the stored data. The data can be read by applying appropriate voltage levels to the address pins and observing the output on the data pins.

Detailed Application Field Plans

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

Detailed and Complete Alternative Models

1. AT27C080-90TC: This model offers double the storage capacity of AT27C040-90TC, with 8 megabits (1 megabyte) of memory.
2. AT27C010-90TC: A lower capacity alternative, offering 1 megabit (128 kilobytes) of memory.
3. AT27C256R-45TC: This model provides a smaller storage capacity of 256 kilobits (32 kilobytes) but operates at a faster access time of 45 nanoseconds.

These alternative models cater to different requirements based on storage capacity and access time needs.

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