AT27C512R-55JI

Product Overview

Category

AT27C512R-55JI belongs to the category of programmable read-only memory (PROM) chips.

Use

This product is commonly used for storing permanent data or code that needs to be retained even when power is turned off. It is widely utilized in various electronic devices and systems.

Characteristics

• Non-volatile: The stored data remains intact even without power.
• Programmable: The memory can be written or programmed with specific data.
• Read-only: Once programmed, the data cannot be modified or erased.
• High capacity: The AT27C512R-55JI has a capacity of 512 kilobits (64 kilobytes).

Package

The AT27C512R-55JI is typically available in a 32-pin plastic dual in-line package (PDIP). This package provides physical protection and facilitates easy integration into circuit boards.

Essence

The essence of this product lies in its ability to store data permanently, making it ideal for applications where non-volatile memory is required.

Packaging/Quantity

The AT27C512R-55JI is usually packaged in tubes or trays, with each tube or tray containing a specific quantity of chips. The exact packaging and quantity may vary depending on the supplier.

Specifications

• Operating Voltage: 5V
• Access Time: 55 nanoseconds
• Organization: 64K x 8 bits
• Erase Time: Not applicable (read-only memory)
• Data Retention: Minimum 10 years
• Endurance: 1,000 write/erase cycles

Detailed Pin Configuration

The AT27C512R-55JI has a total of 32 pins, each serving a specific purpose. 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 (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. /WE (Write Enable)
31. /PGM (Program)
32. /BYTE (Byte/Word Organization)

Functional Features

• High-speed access: The AT27C512R-55JI offers fast access times, allowing for efficient retrieval of stored data.
• Low power consumption: This chip is designed to operate with minimal power requirements, making it suitable for battery-powered devices.
• Wide operating voltage range: It can function reliably within a voltage range of 4.5V to 5.5V.
• Easy integration: The standard pin configuration and package make it easy to integrate into various electronic systems.

Advantages and Disadvantages

Advantages

• Non-volatile memory ensures data retention even during power loss.
• High capacity allows for storing large amounts of data or code.
• Fast access times enable quick retrieval of information.
• Low power consumption prolongs battery life in portable devices.

Disadvantages

• Once programmed, the data cannot be modified or erased, limiting flexibility.
• Limited endurance of 1,000 write/erase cycles may be a constraint in certain applications.
• Relatively larger physical size compared to other memory technologies.

Working Principles

The AT27C512R-55JI is based on the principle of electrically programmable read-only memory (EPROM). It utilizes a floating-gate transistor structure that can be electrically charged or discharged to represent binary data. The programming process involves applying specific voltages to the appropriate pins, which modifies the charge on the floating gate and stores the desired data. Once programmed, the stored data can be read by enabling the chip and accessing the corresponding memory locations.

Detailed Application Field Plans

The AT27C512R-55JI finds extensive use in various electronic systems and devices, including but not limited to: - Embedded systems - Microcontrollers - Industrial control systems - Automotive electronics - Medical equipment - Communication devices

Its non-volatile nature and high capacity make it suitable for applications where permanent storage of data or code is required.

Detailed and