AT27C512R-90RI

Product Overview

Category

AT27C512R-90RI 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 AT27C512R-90RI has a capacity of 512 kilobits (64 kilobytes).
• Fast access time: With an access time of 90 nanoseconds, it provides quick retrieval of stored information.
• Low power consumption: The chip operates on low power, making it suitable for battery-powered devices.

Package

The AT27C512R-90RI is available in a 28-pin dual in-line package (DIP), which is a common packaging format for integrated circuits.

Essence

The essence of this product lies in its ability to store data permanently, ensuring that critical information remains intact even in the absence of power.

Packaging/Quantity

The AT27C512R-90RI is typically packaged in reels or tubes, with each containing a specific quantity of chips. The exact quantity may vary depending on the manufacturer's specifications.

Specifications

• Capacity: 512 kilobits (64 kilobytes)
• Access Time: 90 nanoseconds
• Supply Voltage: 5 volts
• Operating Temperature Range: -40°C to +85°C
• Package Type: 28-pin DIP

Detailed Pin Configuration

The AT27C512R-90RI chip has a total of 28 pins, each serving a specific purpose. The pin configuration is as follows:

1. A14: Address Input
2. A12: Address Input
3. A7: Address Input
4. A6: Address Input
5. A5: Address Input
6. A4: Address Input
7. A3: Address Input
8. A2: Address Input
9. A1: Address Input
10. A0: Address Input
11. /OE: Output Enable
12. /CE: Chip Enable
13. /WE: Write Enable
14. VCC: Power Supply
15. DQ0: Data Input/Output
16. DQ1: Data Input/Output
17. DQ2: Data Input/Output
18. DQ3: Data Input/Output
19. DQ4: Data Input/Output
20. DQ5: Data Input/Output
21. DQ6: Data Input/Output
22. DQ7: Data Input/Output
23. NC: No Connection
24. GND: Ground
25. A8: Address Input
26. A9: Address Input
27. A11: Address Input
28. A13: Address Input

Functional Features

• Permanent data storage: The AT27C512R-90RI allows for the permanent storage of data, ensuring its integrity even in the absence of power.
• High-speed access: With an access time of 90 nanoseconds, this chip enables fast retrieval of stored information.
• Easy integration: The 28-pin DIP package facilitates easy integration into various electronic systems.

Advantages and Disadvantages

Advantages

• Non-volatile memory ensures data retention without power supply.
• High storage capacity suitable for a wide range of applications.
• Fast access time allows for quick retrieval of data.
• Low power consumption makes it ideal for battery-powered devices.

Disadvantages

• Inability to modify or erase stored data limits its flexibility.
• Limited storage capacity compared to other memory technologies.

Working Principles

The AT27C512R-90RI utilizes a technology known as electrically programmable read-only memory (EPROM). It consists of a grid of memory cells, with each cell storing a bit of information. The data is written to the memory cells during the manufacturing process and cannot be modified or erased by the end-user. When the chip receives an address input, it retrieves the corresponding data from the memory cells and outputs it through the data pins.

Detailed Application Field Plans

The AT27C512R-90RI finds applications in various fields where permanent data storage is required. Some of the detailed application field plans include:

1. Embedded Systems: Used for storing firmware and configuration data in microcontrollers and other embedded devices.
2. Automotive Electronics: Employed in automotive systems for storing critical data such as calibration parameters and diagnostic codes.
3. Industrial Control Systems: Utilized in industrial control systems to store program code and configuration settings.
4. Medical Devices: Used in medical equipment to store patient data, device settings, and firmware.
5. Consumer