AT27C020-55TC

Product Overview

Category

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

Use

It is primarily used for storing data that needs to be permanently written and cannot be modified or erased.

Characteristics

• Non-volatile: The stored data remains intact even when power is removed.
• High storage capacity: The AT27C020-55TC has a storage capacity of 2 megabits (256 kilobytes).
• Fast access time: It offers a fast access time of 55 nanoseconds.
• Low power consumption: The chip operates at low power, making it suitable for various applications.
• Durable: The AT27C020-55TC is designed to withstand multiple write and erase cycles.

Package

The AT27C020-55TC comes in a standard 32-pin plastic dual in-line package (PDIP).

Essence

The essence of AT27C020-55TC lies in its ability to provide non-volatile storage for critical data that requires permanent retention.

Packaging/Quantity

The AT27C020-55TC is typically packaged in reels or tubes, with each reel or tube containing a specific quantity of chips. The exact packaging and quantity may vary depending on the manufacturer.

Specifications

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

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. CE (Program Enable)
24. OE (Output Enable)
25. WE (Write Enable)
26. NC (No Connection)
27. NC (No Connection)
28. NC (No Connection)
29. NC (No Connection)
30. NC (No Connection)
31. GND (Ground)
32. A8

Functional Features

• Non-volatile storage: The AT27C020-55TC retains data even when power is removed.
• High-speed access: It offers fast access time, allowing for quick retrieval of stored data.
• Easy integration: The chip can be easily integrated into various electronic systems.
• Reliable performance: The AT27C020-55TC ensures reliable and consistent data storage.

Advantages and Disadvantages

Advantages

• Non-volatile storage ensures data retention.
• Fast access time allows for quick data retrieval.
• Durable design withstands multiple write and erase cycles.
• Low power consumption makes it suitable for various applications.

Disadvantages

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

Working Principles

The AT27C020-55TC operates based on the principle of electrical programming. Once programmed, the stored data remains intact until the chip is replaced. The chip utilizes a combination of transistors and diodes to store and retrieve data.

Detailed Application Field Plans

The AT27C020-55TC 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. AT27C010-45PC: 1 Megabit (128 Kilobytes) PROM chip with a slower access time of 45 nanoseconds.
2. AT27C040-70PU: 4 Megabit (512 Kilobytes) PROM chip with a faster access time of 70 nanoseconds.
3. AT27C080-90JC: 8 Megabit (1 Megabyte) PROM chip with a slower access time of 90 nanoseconds.

These alternative models offer different storage capacities, access times, and package types to cater to diverse application requirements.

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