AT27C020-55TU

Product Overview

Category

AT27C020-55TU belongs to the category of programmable read-only memory (PROM) chips.

Use

This chip is commonly used for storing data that needs to be permanently written and cannot be modified or erased.

Characteristics

• Non-volatile memory: The stored data remains intact even when power is removed.
• High storage capacity: The AT27C020-55TU has a storage capacity of 2 megabits (256 kilobytes).
• Fast access time: It provides quick access to stored data with a maximum access time of 55 nanoseconds.
• Low power consumption: The chip operates at low power levels, making it suitable for battery-powered devices.

Package

The AT27C020-55TU is available in a 32-pin plastic thin quad flat pack (TQFP) package.

Essence

The essence of AT27C020-55TU lies in its ability to store large amounts of data securely and provide fast access to that data.

Packaging/Quantity

The chip is typically sold in reels or tubes, with each reel or tube containing a specific quantity of AT27C020-55TU chips.

Specifications

• Storage Capacity: 2 Megabits (256 Kilobytes)
• Access Time: 55 Nanoseconds
• Supply Voltage: 5V
• Operating Temperature Range: -40°C to +85°C
• Package Type: 32-pin TQFP

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. VCC
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. A8
27. A9
28. A11
29. A10
30. A14
31. A13
32. NC

Functional Features

• Non-volatile storage: The data stored in the AT27C020-55TU remains intact even when power is removed.
• Fast access time: With a maximum access time of 55 nanoseconds, the chip provides quick retrieval of stored data.
• Easy integration: The chip can be easily integrated into various electronic systems due to its standard pin configuration.
• Low power consumption: The AT27C020-55TU operates at low power levels, making it suitable for energy-efficient devices.

Advantages and Disadvantages

Advantages

• Large storage capacity
• Fast access time
• Non-volatile memory
• Low power consumption

Disadvantages

• Data cannot be modified or erased once programmed
• Limited flexibility compared to other types of memory chips

Working Principles

The AT27C020-55TU uses a technology called electrically programmable read-only memory (EPROM). It consists of a grid of memory cells that can be individually programmed with binary data. Once programmed, the data remains permanently stored in the memory cells until the chip is replaced.

Detailed Application Field Plans

The AT27C020-55TU 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. AT27C010-45PU: 1 Megabit (128 Kilobytes) capacity, 45 nanoseconds access time, 32-pin DIP package.
2. AT27C040-90PU: 4 Megabit (512 Kilobytes) capacity, 90 nanoseconds access time, 32-pin DIP package.
3. AT27C080-70PU: 8 Megabit (1 Megabyte) capacity, 70 nanoseconds access time, 32-pin DIP package.

These alternative models offer different storage capacities and access times to cater to specific requirements.

In conclusion, the AT27C020-55TU is a programmable read-only memory chip with a large storage capacity, fast access time, and low power consumption. It finds applications in various fields and has alternative models available for different needs.