AT27LV512A-90RU

Product Overview

Category: Integrated Circuit (IC)

Use: The AT27LV512A-90RU is a high-performance electrically erasable programmable read-only memory (EEPROM) IC. It is designed to store and retrieve digital information in various electronic systems.

Characteristics: - High storage capacity of 512 kilobits (64 kilobytes) - Fast access time of 90 nanoseconds - Low power consumption - Reliable data retention - Easy integration into existing circuitry

Package: The AT27LV512A-90RU is available in a compact, industry-standard 32-pin plastic dual in-line package (PDIP). This package ensures easy handling and compatibility with standard PCB designs.

Essence: The essence of the AT27LV512A-90RU lies in its ability to provide non-volatile storage for critical data in electronic devices. It offers reliable and fast access to stored information, making it suitable for a wide range of applications.

Packaging/Quantity: The AT27LV512A-90RU is typically supplied in reels or tubes, depending on the manufacturer's packaging standards. The quantity per package varies but is commonly around 100 units.

Specifications

• Storage Capacity: 512 kilobits (64 kilobytes)
• Access Time: 90 nanoseconds
• Supply Voltage: 5V ±10%
• Operating Temperature Range: -40°C to +85°C
• Data Retention: 10 years minimum
• Package Type: 32-pin PDIP

Detailed Pin Configuration

The AT27LV512A-90RU features a total of 32 pins, each serving a specific purpose. The pin configuration is as follows:

1. A0: Address Input
2. A1: Address Input
3. A2: Address Input
4. A3: Address Input
5. A4: Address Input
6. A5: Address Input
7. A6: Address Input
8. A7: Address Input
9. A8: Address Input
10. A9: Address Input
11. A10: Address Input
12. A11: Address Input
13. A12: Address Input
14. A13: Address Input
15. A14: Address Input
16. /OE: Output Enable Input
17. /CE: Chip Enable Input
18. /WE: Write Enable Input
19. I/O0: Data Input/Output
20. I/O1: Data Input/Output
21. I/O2: Data Input/Output
22. I/O3: Data Input/Output
23. I/O4: Data Input/Output
24. I/O5: Data Input/Output
25. I/O6: Data Input/Output
26. I/O7: Data Input/Output
27. VCC: Supply Voltage
28. GND: Ground
29. NC: No Connection
30. NC: No Connection
31. NC: No Connection
32. NC: No Connection

Functional Features

The AT27LV512A-90RU offers the following functional features:

1. High-Speed Access: With an access time of 90 nanoseconds, it allows for quick retrieval of stored data.
2. Non-Volatile Storage: The EEPROM technology ensures that data remains intact even when power is removed.
3. Easy Integration: The IC can be easily integrated into existing circuitry due to its standard pin configuration and package.
4. Reliable Data Retention: The AT27LV512A-90RU guarantees a minimum data retention period of 10 years, ensuring long-term reliability.

Advantages and Disadvantages

Advantages: - High storage capacity - Fast access time - Low power consumption - Reliable data retention - Easy integration into existing circuitry

Disadvantages: - Limited write endurance compared to other memory technologies - Relatively higher cost per bit compared to some alternatives

Working Principles

The AT27LV512A-90RU operates based on the principles of electrically erasable programmable read-only memory (EEPROM). It utilizes a grid of transistors to store digital information in the form of electrical charges. These charges can be selectively erased and reprogrammed using specific voltage levels applied to the control pins.

During normal operation, the chip enable (/CE) and output enable (/OE) pins are used to control the read and write operations. When /CE is low and /OE is high, the device is in the standby mode. To read data, the desired address is provided through the address pins, and the corresponding data is accessed from the I/O pins. For writing, the write enable (/WE) pin is activated along with the address and data inputs.