AT27C512R-90PC

Product Overview

Category

AT27C512R-90PC 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-90PC has a capacity of 512 kilobits, allowing it to store a large amount of data.
• Fast access time: With an access time of 90 nanoseconds, this PROM chip provides quick retrieval of stored information.
• Durable: The chip is designed to withstand multiple read operations without degradation.

Package

The AT27C512R-90PC is available in a 32-pin plastic dual in-line package (PDIP).

Essence

The essence of this product lies in its ability to provide non-volatile storage of data, ensuring that the information remains intact even in the absence of power.

Packaging/Quantity

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

Specifications

• Capacity: 512 kilobits
• Access Time: 90 nanoseconds
• Supply Voltage: 5V
• Operating Temperature Range: -40°C to +85°C
• Package Type: 32-pin PDIP

Detailed Pin Configuration

The AT27C512R-90PC has a total of 32 pins, each serving a specific function. The pin configuration is as follows:

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. VPP (Programming Voltage)
14. NC (No Connection)
15. DQ0
16. DQ1
17. DQ2
18. DQ3
19. DQ4
20. DQ5
21. DQ6
22. DQ7
23. VCC (Power Supply)
24. GND (Ground)
25. A8
26. A9
27. A11
28. A10
29. /WE (Write Enable)
30. /PGM (Program)
31. /BYTE (Byte Mode)
32. /BYTE (Byte Mode)

Functional Features

• Non-volatile storage: The AT27C512R-90PC retains data even when power is removed.
• High-speed access: With an access time of 90 nanoseconds, the chip allows for quick retrieval of stored information.
• Easy integration: The chip can be easily integrated into various electronic systems due to its standard pin configuration and package.

Advantages and Disadvantages

Advantages

• Non-volatile memory ensures data integrity.
• High storage capacity allows for storing a large amount of information.
• Fast access time enables quick retrieval of data.
• Durable design withstands multiple read operations.

Disadvantages

• Data cannot be modified or erased once programmed.
• Limited write cycles compared to other types of memory.

Working Principles

The AT27C512R-90PC operates based on the principle of electrical charge trapping. During programming, a high voltage is applied to the control gate, allowing electrons to tunnel through the insulating layer and become trapped in the floating gate. These trapped charges represent the stored data, which can be read by applying appropriate voltages to the address and control pins.

Detailed Application Field Plans

The AT27C512R-90PC finds applications in various fields where non-volatile memory is required. Some of the common application areas include:

1. Embedded Systems: The chip can be used in embedded systems to store firmware or configuration data.
2. Automotive Electronics: It can be employed in automotive electronics for storing critical information such as calibration data or vehicle parameters.
3. Industrial Control Systems: The PROM chip can be utilized in industrial control systems for storing program code or configuration settings.
4. Medical Devices: It finds use in medical devices for storing patient data or device-specific settings.

Detailed and Complete Alternative Models

1. AT28C64B-15PU: This 64-kilobit EEPROM chip offers similar functionality to the AT27C512R-90PC but allows for erasing and reprogramming of data.
2. AM29F040B-90JC: With a capacity of 4 megabits, this flash memory chip provides higher storage capacity