AT27C512R-45JU-T

Product Overview

Category

AT27C512R-45JU-T 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 stored data remains even when power is removed.

Characteristics

• Non-volatile memory: Retains data even without power supply.
• Programmable: Allows users to write data into the memory.
• Read-only: Once programmed, the data cannot be modified or erased.
• High capacity: The AT27C512R-45JU-T has a capacity of 512 kilobits (64 kilobytes).

Package

The AT27C512R-45JU-T is available in a plastic package with 32 pins. The package type is PLCC (Plastic Leaded Chip Carrier).

Essence

The essence of AT27C512R-45JU-T lies in its ability to provide reliable and non-volatile memory storage for electronic devices.

Packaging/Quantity

This product is typically packaged in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Memory Capacity: 512 kilobits (64 kilobytes)
• Access Time: 45 nanoseconds
• Supply Voltage: 4.5V - 5.5V
• Operating Temperature Range: -40°C to +85°C
• Package Type: PLCC-32

Detailed Pin Configuration

The AT27C512R-45JU-T has a total of 32 pins. Here is the 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. /WE (Write Enable)
13. VPP (Programming Voltage)
14. NC (No Connection)
15. DQ0 (Data Output 0)
16. DQ1 (Data Output 1)
17. DQ2 (Data Output 2)
18. DQ3 (Data Output 3)
19. DQ4 (Data Output 4)
20. DQ5 (Data Output 5)
21. DQ6 (Data Output 6)
22. DQ7 (Data Output 7)
23. VCC (Power Supply)
24. GND (Ground)
25. A8
26. A9
27. A11
28. A10
29. A13
30. CE (Chip Enable)
31. NC (No Connection)
32. /PGM (Program)

Functional Features

• Non-volatile memory storage.
• High-speed access with a low access time of 45 nanoseconds.
• Easy integration into electronic devices due to its standard pin configuration.
• Reliable data retention even in harsh environmental conditions.
• Low power consumption.

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 time enables quick retrieval of stored information.
• Easy integration due to standard pin configuration.
• Reliable performance in various environmental conditions.

Disadvantages

• Once programmed, the data cannot be modified or erased, limiting flexibility.
• Limited write cycles compared to other types of memory.
• Higher cost compared to some alternative memory technologies.

Working Principles

The AT27C512R-45JU-T is based on the principle of electrically programmable read-only memory (EPROM). It uses a floating-gate transistor structure to store data. During programming, a high voltage is applied to the programming pin (VPP), which charges the floating gate and traps electrons, representing the programmed data. The trapped charge alters the transistor's behavior, allowing it to retain the stored information even when power is removed.

Detailed Application Field Plans

The AT27C512R-45JU-T finds applications in various electronic devices that require non-volatile memory storage. Some of the common application fields include:

1. Embedded Systems: Used for firmware storage in microcontrollers and other embedded systems.
2. Automotive Electronics: Stores critical data such as calibration parameters, configuration settings, and boot code in automotive electronics.
3. Industrial Control Systems: Provides non-volatile memory for storing program code and configuration data in industrial control systems.
4. Consumer Electronics: Used in devices like gaming consoles, set-top boxes, and digital cameras for storing firmware and data.

Detailed and Complete Alternative Models

1. AT28C64B-15PU: A similar 64 kilobyte PROM chip with an access time of 150 nanoseconds