AT27C2048-90VI

Product Overview

Category

AT27C2048-90VI belongs to the category of programmable read-only memory (PROM) chips.

Use

This product is primarily used for storing data that needs to be permanently written and cannot be modified or erased. It is commonly employed in applications where non-volatile memory is required.

Characteristics

• Non-volatile: The stored data remains intact even when power is removed.
• High storage capacity: The AT27C2048-90VI has a capacity of 2,048 kilobits (256 kilobytes).
• Fast access time: With an access time of 90 nanoseconds, it provides quick retrieval of data.
• Low power consumption: This chip operates on low power, making it suitable for battery-powered devices.

Package

The AT27C2048-90VI comes in a standard dual in-line package (DIP), which consists of two parallel rows of pins.

Essence

The essence of this product lies in its ability to store data permanently, ensuring that the information remains intact even without power supply.

Packaging/Quantity

The AT27C2048-90VI is typically packaged in tubes or trays, with each tube or tray containing a specific quantity of chips. The exact packaging and quantity may vary depending on the manufacturer.

Specifications

• Memory Capacity: 2,048 kilobits (256 kilobytes)
• Access Time: 90 nanoseconds
• Operating Voltage: 5 volts
• Input/Output Voltage: 0 to 5 volts
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The AT27C2048-90VI has a total of 32 pins, numbered from 1 to 32. The pin configuration is as follows:

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

Functional Features

• Write Protection: The chip includes write protection features to prevent accidental modification of stored data.
• High-Speed Operation: With a fast access time of 90 nanoseconds, it enables efficient data retrieval.
• Low Power Consumption: The AT27C2048-90VI operates on low power, making it suitable for energy-efficient applications.
• Reliable Data Retention: The non-volatile nature of the memory ensures that data remains intact even in the absence of power.

Advantages and Disadvantages

Advantages

• Permanent data storage
• Fast access time
• Low power consumption
• Reliable data retention

Disadvantages

• Inability to modify or erase stored data
• Limited storage capacity compared to other memory types

Working Principles

The AT27C2048-90VI utilizes a technology called electrically erasable programmable read-only memory (EEPROM). It employs a grid of transistors to store data in the form of electrical charges. Once programmed, the data remains fixed until the chip is replaced.

Detailed Application Field Plans

The AT27C2048-90VI 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. AT27C4096-90VI: This model offers double the storage capacity of the AT27C2048-90VI, with 4,096 kilobits (512 kilobytes) of memory.
2. AT27C1024-70VI: With a lower access time of 70 nanoseconds, this model provides faster data retrieval.
3. AT27C256R-45VI: This alternative model features a reduced operating voltage of 3.3 volts, making it suitable for low-power applications.

These alternative models offer different specifications and may be chosen based on specific requirements and compatibility with the target system.

In conclusion, the AT27C2048-90VI is a programmable read-only memory chip that provides permanent data storage with fast access times and low power consumption. Its applications span across various industries, and alternative models are available to cater to different needs and preferences.