AT27C020-15JI

Product Overview

Category

AT27C020-15JI belongs to the category of programmable read-only memory (PROM) chips.

Use

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

Characteristics

• Non-volatile: The data stored in AT27C020-15JI 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 150 nanoseconds, it provides quick retrieval of stored data.
• Low power consumption: AT27C020-15JI operates on low power, making it suitable for battery-powered devices.

Package

AT27C020-15JI is available in a 32-pin plastic J-leaded chip carrier (PLCC) package.

Essence

The essence of AT27C020-15JI lies in its ability to store large amounts of data reliably and securely, without the risk of accidental modification or loss.

Packaging/Quantity

This chip is typically sold in reels containing multiple units. The exact quantity may vary depending on the supplier.

Specifications

• Storage Capacity: 2 Megabits (256 Kilobytes)
• Access Time: 150 Nanoseconds
• Supply Voltage: 5V ±10%
• Operating Temperature Range: -40°C to +85°C
• Package Type: 32-pin PLCC

Detailed Pin Configuration

1. A16
2. A14
3. A12
4. A7
5. A6
6. A5
7. A4
8. A3
9. A2
10. A1
11. A0
12. /OE (Output Enable)
13. A15
14. A13
15. A8
16. A9
17. A11
18. A10
19. VCC (+5V Power Supply)
20. D0
21. D1
22. D2
23. D3
24. D4
25. D5
26. D6
27. D7
28. /CE (Chip Enable)
29. /WE (Write Enable)
30. /PGM (Program)
31. /BYTE (Byte/Word Organization)
32. GND (Ground)

Functional Features

• Non-volatile storage: The data stored in AT27C020-15JI is retained even when power is disconnected.
• High-speed access: With a fast access time of 150 nanoseconds, data retrieval is quick and efficient.
• Easy integration: The chip can be easily integrated into existing systems due to its standard pin configuration.
• Low power consumption: AT27C020-15JI operates on low power, making it suitable for battery-powered devices.

Advantages and Disadvantages

Advantages

• Reliable and secure data storage
• Fast access time
• Easy integration into existing systems
• Low power consumption

Disadvantages

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

Working Principles

AT27C020-15JI is based on the principle of electrically erasable programmable read-only memory (EEPROM). It uses a grid of transistors to store data in binary form. Once programmed, the data remains intact until it is erased using specialized equipment.

Detailed Application Field Plans

AT27C020-15JI 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. AT27C040-15PU: 4 Megabit (512 Kilobyte) PROM chip with similar characteristics and pin configuration.
2. AT27C080-15JC: 8 Megabit (1 Megabyte) PROM chip with comparable features and package type.
3. AT27C256R-45PU: 256 Kilobit (32 Kilobyte) PROM chip with lower storage capacity but compatible pin configuration.

These alternative models offer different storage capacities while maintaining compatibility with the AT27C020-15JI in terms of pin configuration and functionality.

In conclusion, AT27C020-15JI is a programmable read-only memory chip that provides reliable and secure non-volatile data storage. With its high storage capacity, fast access time, and low power consumption, it finds applications in various fields. While it has limitations in terms of data modification and storage capacity, alternative models are available to suit specific requirements.