Microchip Technology
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AT27LV256A-90RI
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AT27LV256A-90RI

Product Overview

Category

The AT27LV256A-90RI belongs to the category of electrically erasable programmable read-only memory (EEPROM) chips.

Use

It is used for storing and retrieving digital information in electronic devices, such as microcontrollers, computers, and consumer electronics.

Characteristics

  • Non-volatile memory
  • Electrically erasable and reprogrammable
  • High-speed access
  • Low power consumption

Package

The AT27LV256A-90RI is typically available in a 28-pin dual in-line package (DIP).

Essence

The essence of this product lies in its ability to retain stored data even when the power is turned off, making it suitable for applications requiring non-volatile memory.

Packaging/Quantity

The AT27LV256A-90RI is commonly packaged in tubes or trays and is available in various quantities depending on the manufacturer's specifications.

Specifications

  • Operating Voltage: 4.5V to 5.5V
  • Access Time: 90ns
  • Memory Capacity: 256 kilobits
  • Interface: Parallel
  • Operating Temperature: -40°C to 125°C

Detailed Pin Configuration

The AT27LV256A-90RI has a 28-pin configuration with specific pins dedicated to address lines, data input/output, control signals, and power supply connections.

Functional Features

  • Byte-wide access for easy interfacing
  • Fast programming and erasing operations
  • Built-in protection against inadvertent write cycles
  • Low standby current for power efficiency

Advantages and Disadvantages

Advantages

  • Non-volatile storage
  • High-speed access
  • Low power consumption
  • Reliable data retention

Disadvantages

  • Limited capacity compared to other storage technologies
  • Higher cost per bit compared to volatile memory

Working Principles

The AT27LV256A-90RI utilizes a combination of floating gate transistors and control circuitry to store and retrieve digital data. When programmed, charge is trapped on the floating gate, altering the transistor's behavior and preserving the stored information even without power.

Detailed Application Field Plans

The AT27LV256A-90RI is widely used in embedded systems, industrial automation, automotive electronics, and communication devices. It is employed for firmware storage, parameter settings, and configuration data in these applications.

Detailed and Complete Alternative Models

  • AT28C256: Similar EEPROM chip with slightly different specifications
  • M27C256B: EPROM alternative with similar capacity and interface
  • W27C512: One-time programmable (OTP) memory with comparable characteristics

In conclusion, the AT27LV256A-90RI is a versatile EEPROM chip offering non-volatile memory storage with high-speed access and low power consumption. Its application spans across various industries, and it has several alternative models with similar functionalities.

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Noem 10 veelgestelde vragen en antwoorden met betrekking tot de toepassing van AT27LV256A-90RI in technische oplossingen

  1. What is the AT27LV256A-90RI?

    • The AT27LV256A-90RI is a low-power, high-performance 262,144-bit one-time programmable read-only memory (OTP EPROM) organized as 32K by 8 bits.

  2. What are the key features of the AT27LV256A-90RI?

    • The key features include a fast access time of 90ns, low power consumption, and a wide operating voltage range.

  3. How can the AT27LV256A-90RI be used in technical solutions?

    • It can be used for firmware storage, code storage, configuration data storage, and other applications where non-volatile memory is required.

  4. What is the operating voltage range of the AT27LV256A-90RI?

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

  5. What is the typical power consumption of the AT27LV256A-90RI?

    • The typical power consumption is low, making it suitable for battery-powered applications.

  6. Can the AT27LV256A-90RI be reprogrammed after initial programming?

    • No, it is a one-time programmable memory and cannot be reprogrammed after the initial programming.

  7. What is the temperature range for the AT27LV256A-90RI?

    • The device is specified for operation over the industrial temperature range of -40°C to 85°C.

  8. What are the package options available for the AT27LV256A-90RI?

    • The AT27LV256A-90RI is available in various package options including PDIP, PLCC, and TSOP.

  9. Is there a recommended programming algorithm for the AT27LV256A-90RI?

    • Yes, the datasheet provides a recommended programming algorithm for the device.

  10. Are there any special considerations for handling and storage of the AT27LV256A-90RI?

    • It is recommended to follow standard ESD precautions and store the device in a dry environment at room temperature.