AT27C512R-90RC

Product Overview

Category

AT27C512R-90RC belongs to the category of programmable read-only memory (PROM) chips.

Use

This product is primarily used for storing and retrieving data in electronic devices. It provides non-volatile memory storage, meaning that the data remains intact even when power is removed.

Characteristics

• Non-volatile: Retains data even without power supply.
• Programmable: Allows users to write data into the memory.
• Read-only: Data can be read but not modified once programmed.
• High capacity: The AT27C512R-90RC has a capacity of 512 kilobits (64 kilobytes).

Package

The AT27C512R-90RC is available in a standard dual in-line package (DIP). This package type is commonly used for integrated circuits and provides easy installation and replacement.

Essence

The essence of the AT27C512R-90RC lies in its ability to store and retrieve data reliably, making it an essential component in various electronic devices.

Packaging/Quantity

The AT27C512R-90RC is typically packaged in reels or tubes, depending on the manufacturer's specifications. The quantity per package may vary, but it is commonly available in bulk quantities suitable for industrial production.

Specifications

• Operating Voltage: 5V
• Access Time: 90 nanoseconds
• Organization: 64K x 8 bits
• Erase Time: Not applicable (non-erasable)
• Endurance: 10,000 write cycles
• Data Retention: 20 years

Detailed Pin Configuration

The AT27C512R-90RC has a total of 28 pins, which are assigned specific functions 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. VPP - Programming Voltage
14. DQ0 - Data Input/Output
15. DQ1 - Data Input/Output
16. DQ2 - Data Input/Output
17. DQ3 - Data Input/Output
18. DQ4 - Data Input/Output
19. DQ5 - Data Input/Output
20. DQ6 - Data Input/Output
21. DQ7 - Data Input/Output
22. VCC - Power Supply
23. GND - Ground
24. NC - No Connection
25. A8 - Address Input
26. A9 - Address Input
27. A11 - Address Input
28. A13 - Address Input

Functional Features

• High-speed access: The AT27C512R-90RC offers fast access times, allowing for efficient data retrieval.
• Reliable data storage: With its non-volatile memory, the stored data remains intact even during power loss or device shutdown.
• Easy integration: The standard DIP package and well-defined pin configuration make it easy to integrate the chip into various electronic systems.

Advantages and Disadvantages

Advantages

• Non-volatile memory ensures data retention without power supply.
• High capacity allows for storing a significant amount of data.
• Fast access times enable quick retrieval of information.
• Easy integration with standard DIP package and pin configuration.

Disadvantages

• Data cannot be modified once programmed, limiting flexibility.
• Limited endurance with a maximum of 10,000 write cycles.
• Non-erasable memory, making it unsuitable for applications requiring frequent data updates.

Working Principles

The AT27C512R-90RC 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 voltages to the address and data lines. Once programmed, the stored data remains unchanged until the next programming operation.

Detailed Application Field Plans

The AT27C512R-90RC finds application in various electronic systems, including but not limited to: 1. Embedded systems 2. Automotive electronics 3. Industrial control systems 4. Medical devices 5. Communication equipment

In these applications, the AT27C512R-90RC provides reliable and non-volatile storage for critical data such as firmware, configuration settings, and lookup tables.

Detailed and Complete Alternative Models

While the AT27C512R-90RC is a popular choice, there are alternative models available in the market that offer similar functionality. Some notable alternatives include:

1. AT28C