AT27C020-90JC

Product Overview

Category

AT27C020-90JC belongs to the category of programmable read-only memory (PROM) chips.

Use

It is primarily used for storing data that needs to be permanently stored and cannot be modified or erased. PROM chips are commonly used in various electronic devices, such as computers, consumer electronics, and automotive applications.

Characteristics

• Non-volatile: The data stored in AT27C020-90JC remains even when power is turned off.
• High storage capacity: AT27C020-90JC has a storage capacity of 2 megabits (256 kilobytes).
• Fast access time: It has a fast access time of 90 nanoseconds.
• Low power consumption: AT27C020-90JC operates on low power, making it suitable for battery-powered devices.

Package

AT27C020-90JC is available in a 32-pin PLCC (Plastic Leaded Chip Carrier) package.

Essence

The essence of AT27C020-90JC lies in its ability to store data permanently, providing reliable and non-volatile memory storage.

Packaging/Quantity

AT27C020-90JC 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 and supplier.

Specifications

• Storage Capacity: 2 Megabits (256 Kilobytes)
• Access Time: 90 Nanoseconds
• Supply Voltage: 5V
• Operating Temperature Range: -40°C to +85°C
• Package Type: 32-pin PLCC

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. VPP
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. VCC
25. GND
26. NC
27. NC
28. NC
29. NC
30. NC
31. NC
32. NC

Functional Features

• Non-volatile storage: AT27C020-90JC retains data even when power is turned off.
• 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 devices due to its standard pin configuration and package.

Advantages and Disadvantages

Advantages

• Permanent data storage
• Fast access time
• Low power consumption
• Easy integration into electronic devices

Disadvantages

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

Working Principles

AT27C020-90JC uses a technology called floating-gate MOS (Metal-Oxide-Semiconductor) to store data. When the chip is programmed, electrical charges are trapped in the floating gate, representing the stored data. These charges remain even when power is removed, ensuring non-volatile storage.

Detailed Application Field Plans

AT27C020-90JC finds applications in various fields, including: - Computer systems - Consumer electronics - Automotive electronics - Industrial control systems - Medical devices

Detailed and Complete Alternative Models

Some alternative models to AT27C020-90JC include: - AT27C040 - AT27C080 - AT27C256R - AT27C512R

These models offer different storage capacities and specifications, allowing users to choose the most suitable option for their specific requirements.

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