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AT27C512R-90JI
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AT27C512R-90JI

Product Overview

Category

AT27C512R-90JI belongs to the category of programmable read-only memory (PROM) chips.

Use

It is primarily used for storing data that needs to be permanently written and cannot be modified or erased.

Characteristics

  • Non-volatile: The stored data remains intact even when power is turned off.
  • High storage capacity: The AT27C512R-90JI has a capacity of 512 kilobits (64 kilobytes).
  • Fast access time: It operates at a speed of 90 nanoseconds, allowing for quick retrieval of data.
  • Low power consumption: The chip is designed to consume minimal power during operation.

Package

The AT27C512R-90JI comes in a 32-pin plastic dual in-line package (PDIP).

Essence

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

Packaging/Quantity

The AT27C512R-90JI is typically packaged in tubes or trays, with quantities varying based on customer requirements.

Specifications

  • Capacity: 512 kilobits (64 kilobytes)
  • Access Time: 90 nanoseconds
  • Supply Voltage: 5V ±10%
  • Operating Temperature Range: -40°C to +85°C
  • Input/Output Compatibility: TTL, CMOS

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. /CE (Chip Enable)
  13. VSS (Ground)
  14. DQ0
  15. DQ1
  16. DQ2
  17. DQ3
  18. DQ4
  19. DQ5
  20. DQ6
  21. DQ7
  22. A8
  23. A9
  24. A11
  25. A10
  26. /WE (Write Enable)
  27. VCC (+5V Power Supply)
  28. NC (No Connection)
  29. NC
  30. NC
  31. NC
  32. NC

Functional Features

  • Non-volatile storage: The data stored in the AT27C512R-90JI remains intact even when power is turned off.
  • Fast access time: With an access time of 90 nanoseconds, it allows for quick retrieval of data.
  • Easy integration: The chip can be easily integrated into existing electronic systems due to its standard pin configuration.
  • Low power consumption: The AT27C512R-90JI is designed to consume minimal power during operation.

Advantages and Disadvantages

Advantages

  • Permanent data storage
  • Fast access time
  • Easy integration into existing systems
  • Low power consumption

Disadvantages

  • Data cannot be modified or erased once programmed
  • Limited storage capacity compared to other memory technologies

Working Principles

The AT27C512R-90JI uses a technology called floating-gate MOSFET to store data. When programming the chip, electrical charges are trapped in the floating gate, altering the threshold voltage of the transistor. This change in threshold voltage determines whether the stored bit is read as a logic 0 or 1.

Detailed Application Field Plans

The AT27C512R-90JI finds applications in various fields, including: 1. Embedded systems 2. Automotive electronics 3. Industrial control systems 4. Medical devices 5. Consumer electronics

Detailed and Complete Alternative Models

  1. AT27C010-90JI: 1 megabit (128 kilobytes) capacity, 90 nanoseconds access time.
  2. AT27C020-90JI: 2 megabit (256 kilobytes) capacity, 90 nanoseconds access time.
  3. AT27C040-90JI: 4 megabit (512 kilobytes) capacity, 90 nanoseconds access time.

These alternative models offer different storage capacities while maintaining the same access time and package type as the AT27C512R-90JI.

Word count: 511 words

Enumere 10 preguntas y respuestas comunes relacionadas con la aplicación de AT27C512R-90JI en soluciones técnicas

Sure! Here are 10 common questions and answers related to the application of AT27C512R-90JI in technical solutions:

  1. Q: What is the AT27C512R-90JI? A: The AT27C512R-90JI is a 512K (64K x 8) high-performance, low-power CMOS EPROM (Electrically Programmable Read-Only Memory) manufactured by Microchip Technology.

  2. Q: What are the key features of the AT27C512R-90JI? A: The key features include a fast access time of 90ns, low power consumption, wide operating voltage range, and compatibility with industry-standard programming equipment.

  3. Q: How can the AT27C512R-90JI be used in technical solutions? A: It can be used for firmware storage, program code storage, data storage, or configuration storage in various electronic devices such as microcontrollers, embedded systems, industrial control systems, and more.

  4. Q: How is the AT27C512R-90JI programmed? A: The AT27C512R-90JI is programmed using a conventional EPROM programmer that applies a high voltage to the appropriate pins to selectively program the memory cells.

  5. Q: Can the AT27C512R-90JI be reprogrammed? A: No, the AT27C512R-90JI is a one-time programmable EPROM and cannot be electrically erased or reprogrammed after it has been programmed.

  6. Q: What is the maximum operating frequency of the AT27C512R-90JI? A: The AT27C512R-90JI can operate at frequencies up to 33 MHz, making it suitable for high-speed applications.

  7. Q: What is the typical power consumption of the AT27C512R-90JI? A: The typical power consumption of the AT27C512R-90JI is very low, usually in the range of a few milliwatts.

  8. Q: Can the AT27C512R-90JI withstand high temperatures? A: Yes, the AT27C512R-90JI has a wide operating temperature range of -40°C to +85°C, allowing it to function reliably even in harsh environments.

  9. Q: Does the AT27C512R-90JI require any external components for operation? A: No, the AT27C512R-90JI does not require any external components such as voltage regulators or capacitors. It can be directly connected to the system using standard digital interface pins.

  10. Q: Is the AT27C512R-90JI compatible with other EPROM devices? A: Yes, the AT27C512R-90JI is compatible with industry-standard EPROM devices and can be used as a drop-in replacement in most applications.

Please note that these answers are general and may vary depending on specific application requirements.