AT27C020-90TI

Product Overview

Category

AT27C020-90TI 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 data stored in AT27C020-90TI remains intact even when power is turned off.
• High storage capacity: This chip has a storage capacity of 2 megabits (256 kilobytes).
• Fast access time: With an access time of 90 nanoseconds, it provides quick retrieval of stored data.
• Low power consumption: AT27C020-90TI operates on low power, making it suitable for various applications.
• Durable: The chip is designed to withstand multiple read operations without degradation.

Package

AT27C020-90TI is available in a 32-pin plastic dual in-line package (PDIP).

Essence

The essence of AT27C020-90TI lies in its ability to store data permanently and provide fast access to the stored information.

Packaging/Quantity

This chip is typically packaged in tubes or trays, with quantities varying based on customer requirements.

Specifications

• Storage Capacity: 2 Megabits (256 Kilobytes)
• Access Time: 90 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. A8
16. A9
17. A11
18. A10
19. D0
20. D1
21. D2
22. D3
23. D4
24. D5
25. D6
26. D7
27. CE (Chip Erase)
28. OE (Output Enable)
29. NC (No Connection)
30. NC (No Connection)
31. NC (No Connection)
32. GND (Ground)

Functional Features

• Permanent data storage: AT27C020-90TI allows for the permanent storage of data, ensuring its integrity even when power is lost.
• Fast access time: With an access time of 90 nanoseconds, this chip enables quick retrieval of stored information.
• Low power consumption: The chip operates on low power, making it suitable for battery-powered devices.
• High reliability: AT27C020-90TI is designed to provide reliable and durable performance over an extended period.

Advantages and Disadvantages

Advantages

• Non-volatile memory ensures data retention even during power loss.
• Fast access time allows for quick retrieval of stored information.
• Low power consumption makes it suitable for portable devices.
• High reliability ensures long-term performance.

Disadvantages

• Data cannot be modified or erased once programmed.
• Limited storage capacity compared to other memory technologies.
• Requires external programming equipment for initial data programming.

Working Principles

AT27C020-90TI utilizes a technology known as electrically programmable read-only memory (EPROM). It consists of a grid of memory cells that can be programmed by applying specific electrical voltages. Once programmed, the data remains permanently stored in the memory cells until the chip is replaced.

Detailed Application Field Plans

AT27C020-90TI 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

Some alternative models to AT27C020-90TI include: 1. AT27C040-90TI: 4 Megabit (512 Kilobytes) PROM chip with similar characteristics. 2. AT27C080-90TI: 8 Megabit (1 Megabyte) PROM chip with higher storage capacity. 3. AT27C010-90TI: 1 Megabit (128 Kilobytes) PROM chip with lower storage capacity.

These alternative models offer different storage capacities to cater to specific application requirements.

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