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AT27C256R-70JU-T
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AT27C256R-70JU-T

Product Overview

The AT27C256R-70JU-T belongs to the category of electrically erasable programmable read-only memory (EEPROM) chips. These chips are widely used in electronic devices for storing and retrieving data. The AT27C256R-70JU-T is known for its high reliability, ease of use, and versatile applications.

Basic Information

  • Category: Electrically Erasable Programmable Read-Only Memory (EEPROM)
  • Use: Data storage and retrieval in electronic devices
  • Characteristics: High reliability, easy to use, versatile
  • Package: Integrated circuit (IC)
  • Essence: Non-volatile memory
  • Packaging/Quantity: Typically available in tape and reel packaging with varying quantities

Specifications

The AT27C256R-70JU-T has the following specifications: - Memory Capacity: 256 kilobits (32K x 8) - Operating Voltage: 4.5V to 5.5V - Access Time: 70ns - Operating Temperature: -40°C to 85°C - Package Type: PLCC (Plastic Leaded Chip Carrier)

Detailed Pin Configuration

The detailed pin configuration of the AT27C256R-70JU-T is as follows: 1. A16 2. A15 3. A12 4. A7 5. A6 6. A5 7. A4 8. A3 9. A2 10. A1 11. A0 12. /WE 13. /OE 14. NC 15. VCC 16. GND 17. Q7 18. Q6 19. Q5 20. Q4 21. Q3 22. Q2 23. Q1 24. Q0

Functional Features

The AT27C256R-70JU-T offers the following functional features: - Non-volatile storage of data - High-speed access - Low power consumption - Easy interfacing with microcontrollers and other digital systems

Advantages and Disadvantages

Advantages

  • Reliable data storage
  • Fast access time
  • Low power consumption

Disadvantages

  • Limited capacity compared to other storage technologies
  • Inability to rewrite individual bytes without erasing the entire chip

Working Principles

The AT27C256R-70JU-T operates on the principle of electrically altering the state of memory cells to store and retrieve data. When data is written to the chip, the memory cells are programmed using electrical signals. The stored data remains intact even when the power is turned off, making it non-volatile.

Detailed Application Field Plans

The AT27C256R-70JU-T finds extensive application in various electronic devices, including but not limited to: - Microcontroller-based systems - Embedded systems - Consumer electronics - Industrial control systems - Automotive electronics

Detailed and Complete Alternative Models

Some alternative models to the AT27C256R-70JU-T include: - AT28C256 - 29C256 - M27C256B - W27C256

In conclusion, the AT27C256R-70JU-T is a reliable and versatile EEPROM chip that offers non-volatile data storage with fast access times. Its ease of use and compatibility with various electronic systems make it a popular choice for designers and engineers across different industries.

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Noem 10 veelgestelde vragen en antwoorden met betrekking tot de toepassing van AT27C256R-70JU-T in technische oplossingen

  1. What is the AT27C256R-70JU-T?

    • The AT27C256R-70JU-T is a 256K (32K x 8) one-time programmable read-only memory (OTP EPROM) chip.

  2. What are the typical applications of the AT27C256R-70JU-T?

    • It is commonly used in embedded systems, microcontroller-based applications, industrial control systems, and other electronic devices requiring non-volatile memory storage.

  3. What is the operating voltage range for the AT27C256R-70JU-T?

    • The operating voltage range is typically from 4.5V to 5.5V.

  4. How is data written to the AT27C256R-70JU-T?

    • Data is written to the chip using a specific programming sequence involving high voltages and pulses.

  5. Can the AT27C256R-70JU-T be reprogrammed after initial programming?

    • No, it is a one-time programmable device and cannot be reprogrammed once the data has been written.

  6. What is the access time of the AT27C256R-70JU-T?

    • The access time is typically 70ns, as indicated by the "70" in the part number.

  7. What is the temperature range for operation of the AT27C256R-70JU-T?

    • The chip is designed to operate within a temperature range of -40°C to 85°C.

  8. Does the AT27C256R-70JU-T require an external power supply for data retention?

    • No, it does not require an external power supply for data retention, as it is non-volatile.

  9. What is the package type of the AT27C256R-70JU-T?

    • The AT27C256R-70JU-T comes in a standard 28-pin plastic J-lead chip carrier (PLCC) package.

  10. Is the AT27C256R-70JU-T RoHS compliant?

    • Yes, it is RoHS compliant, meaning it meets the Restriction of Hazardous Substances directive for environmental safety.