AT27C512R-90JC

Product Overview

Category

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

Use

It is primarily used for storing data that needs to be permanently written and cannot be modified or erased.

Characteristics

• Non-volatile: The stored data remains intact even when power is turned off.
• High storage capacity: The AT27C512R-90JC has a capacity of 512 kilobits (64 kilobytes).
• Fast access time: It operates at a speed of 90 nanoseconds, allowing for quick retrieval of data.
• Low power consumption: The chip is designed to consume minimal power during operation.

Package

The AT27C512R-90JC is available in a 32-pin PLCC (Plastic Leaded Chip Carrier) package.

Essence

The essence of AT27C512R-90JC lies in its ability to provide non-volatile storage for critical data that requires permanent retention.

Packaging/Quantity

The chip is typically sold in reels or tubes, with each containing a specific quantity of AT27C512R-90JC chips. The exact quantity may vary depending on the supplier.

Specifications

• Capacity: 512 kilobits (64 kilobytes)
• Access Time: 90 nanoseconds
• Operating Voltage: 5V
• Package Type: 32-pin PLCC

Detailed Pin Configuration

1. A14
2. A12
3. A7
4. A6
5. A5
6. A4
7. A3
8. A2
9. A1
10. A0
11. /OE (Output Enable)
12. /CE (Chip Enable)
13. NC (No Connection)
14. DQ0 (Data Output 0)
15. DQ1 (Data Output 1)
16. DQ2 (Data Output 2)
17. DQ3 (Data Output 3)
18. DQ4 (Data Output 4)
19. DQ5 (Data Output 5)
20. DQ6 (Data Output 6)
21. DQ7 (Data Output 7)
22. VCC (Power Supply)
23. /PGM (Program)
24. /VPP (Programming Voltage)
25. A8
26. A9
27. A11
28. A10
29. A13
30. /BYTE (Byte/Word Organization)
31. GND (Ground)
32. NC (No Connection)

Functional Features

• Non-volatile storage: The AT27C512R-90JC retains data even when power is disconnected.
• Fast access time: With an access time of 90 nanoseconds, it allows for quick retrieval of stored data.
• Easy integration: The chip can be easily integrated into existing electronic systems due to its standard pin configuration.
• Low power consumption: It operates with minimal power requirements, making it suitable for battery-powered devices.

Advantages and Disadvantages

Advantages

• Permanent data storage: The data stored in the chip remains intact even without power.
• Quick access time: The fast access time ensures efficient retrieval of data.
• Easy integration: The standard pin configuration simplifies the integration process.
• Low power consumption: It consumes minimal power during operation.

Disadvantages

• Limited storage capacity: The AT27C512R-90JC has a maximum capacity of 512 kilobits, which may not be sufficient for certain applications.
• Inability to modify or erase data: Once programmed, the data cannot be modified or erased, limiting its flexibility.

Working Principles

The AT27C512R-90JC operates based on the principle of electrical programming. The data is written to the chip using a specific programming voltage, and once programmed, it remains permanently stored in the memory cells. During operation, the chip responds to the control signals provided by the system, enabling the retrieval of stored data.

Detailed Application Field Plans

The AT27C512R-90JC finds applications in various fields, including:

1. Embedded Systems: It can be used in embedded systems to store critical firmware or configuration data.
2. Automotive Electronics: The chip can be utilized in automotive electronics for storing calibration data or firmware.
3. Industrial Control Systems: It finds application in industrial control systems for storing program code or configuration data.
4. Medical Devices: The AT27C512R-90JC can be employed in medical devices to store vital patient information or firmware.

Detailed and Complete Alternative Models

1. AT28C64B-15PU: This alternative model offers a capacity of 64 kilobits and operates at an access time of 150 nanoseconds.
2. AT29C010A-12PC