AT27C512R-55PC

Product Overview

Category

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

Use

This chip 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-55PC has a capacity of 512 kilobits, allowing for substantial data storage.
• Fast access time: With an access time of 55 nanoseconds, it provides quick retrieval of stored information.
• Low power consumption: The chip operates on low power, making it suitable for battery-powered devices.

Package

The AT27C512R-55PC is available in a 28-pin plastic dual in-line package (PDIP).

Essence

The essence of this PROM chip lies in its ability to store data permanently, ensuring data integrity and reliability.

Packaging/Quantity

The AT27C512R-55PC 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

• Memory Capacity: 512 kilobits
• Access Time: 55 nanoseconds
• Supply Voltage: 5V
• Operating Temperature Range: -40°C to +85°C
• Pin Count: 28
• Package Type: PDIP

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. A8
14. A9
15. A11
16. VCC (+5V Power Supply)
17. I/O0
18. I/O1
19. I/O2
20. I/O3
21. I/O4
22. I/O5
23. I/O6
24. I/O7
25. CE (Chip Enable)
26. GND (Ground)
27. NC (No Connection)
28. A13

Functional Features

• Permanent data storage: The AT27C512R-55PC allows for the permanent storage of data, ensuring its integrity over time.
• High-speed access: With an access time of 55 nanoseconds, the chip enables quick retrieval of stored information.
• Low power consumption: The chip operates on low power, making it suitable for energy-efficient applications.
• Easy integration: The 28-pin PDIP package facilitates easy integration into various electronic systems.

Advantages and Disadvantages

Advantages

• Non-volatile memory ensures data retention even in the absence of power.
• High storage capacity allows for substantial data storage requirements.
• Fast access time enables quick retrieval of stored information.
• Low power consumption makes it suitable for battery-powered devices.

Disadvantages

• Data cannot be modified or erased once programmed.
• Limited storage capacity compared to other memory technologies.
• Requires external programming equipment for initial data programming.

Working Principles

The AT27C512R-55PC utilizes a one-time programmable technology. During the manufacturing process, the desired data is permanently programmed into the memory cells using high voltage signals. Once programmed, the data remains intact and cannot be modified or erased.

Detailed Application Field Plans

The AT27C512R-55PC finds application in various fields, including: 1. Embedded systems: Used for firmware storage in microcontrollers and other embedded devices. 2. Automotive electronics: Employed for storing critical data such as calibration tables, configuration settings, and firmware in automotive electronic control units (ECUs). 3. Industrial automation: Utilized for storing program code and configuration data in programmable logic controllers (PLCs) and industrial control systems. 4. Consumer electronics: Used in devices like gaming consoles, set-top boxes, and audio/video equipment for firmware storage.

Detailed and Complete Alternative Models

1. AT27C256R-70PU: 256 kilobit PROM chip with an access time of 70 nanoseconds.
2. AT28C64B-15PU: 64 kilobit EEPROM chip with an access time of 150 nanoseconds.
3. AT29C040A-12PC: 4 megabit flash memory chip with an access time of 120 nanoseconds.

These alternative models offer different capacities and access times to cater to specific application requirements.

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