Microchip Technology
Obrázek může být reprezentace.
Viz Specifikace pro podrobnosti o produktu.
AT28HC64B-90JA

AT28HC64B-90JA

Product Overview

Category

AT28HC64B-90JA belongs to the category of non-volatile memory devices.

Use

This product is primarily used for storing and retrieving digital information in electronic systems.

Characteristics

  • Non-volatile: The stored data remains intact even when power is removed.
  • High capacity: The AT28HC64B-90JA has a storage capacity of 64 kilobits (8 kilobytes).
  • High-speed operation: It operates at a speed of 90 nanoseconds, allowing for quick data access.
  • Low power consumption: The device is designed to consume minimal power during operation.
  • Reliable: It offers high data retention and endurance, ensuring long-term reliability.

Package

The AT28HC64B-90JA is available in a 32-pin plastic J-leaded chip carrier package.

Essence

The essence of this product lies in its ability to provide non-volatile memory storage with high capacity and fast access times.

Packaging/Quantity

The AT28HC64B-90JA is typically packaged in reels or tubes, with each containing a specific quantity of chips. The exact packaging and quantity may vary depending on the supplier.

Specifications

  • Memory Type: Non-volatile
  • Capacity: 64 kilobits (8 kilobytes)
  • Access Time: 90 nanoseconds
  • Supply Voltage: 5V
  • Operating Temperature Range: -40°C to +85°C
  • Package Type: 32-pin plastic J-leaded chip carrier

Detailed Pin Configuration

The AT28HC64B-90JA has a total of 32 pins. The pin configuration is as follows:

  1. A0
  2. A1
  3. A2
  4. A3
  5. A4
  6. A5
  7. A6
  8. A7
  9. VCC
  10. CE
  11. OE
  12. WE
  13. I/O0
  14. I/O1
  15. I/O2
  16. I/O3
  17. I/O4
  18. I/O5
  19. I/O6
  20. I/O7
  21. NC
  22. NC
  23. NC
  24. GND
  25. NC
  26. NC
  27. NC
  28. NC
  29. NC
  30. NC
  31. NC
  32. NC

Functional Features

  • Random Access: The AT28HC64B-90JA allows for random access to any location within its memory array.
  • Byte-Writable: It supports byte-level write operations, enabling efficient data modification.
  • Chip Enable (CE) Control: The CE pin controls the device's operation, allowing for easy integration into electronic systems.
  • Output Enable (OE) Control: The OE pin enables or disables the output buffers, facilitating data retrieval.
  • Write Enable (WE) Control: The WE pin controls the write operation, ensuring data integrity.

Advantages and Disadvantages

Advantages

  • Non-volatile storage ensures data retention even during power loss.
  • High capacity allows for storing a significant amount of digital information.
  • Fast access time enables quick retrieval of stored data.
  • Low power consumption minimizes energy usage in electronic systems.
  • Reliable performance ensures long-term data integrity.

Disadvantages

  • Limited storage capacity compared to other modern non-volatile memory devices.
  • Relatively slower access time compared to some newer memory technologies.

Working Principles

The AT28HC64B-90JA utilizes electrically erasable programmable read-only memory (EEPROM) technology. It stores data using floating-gate transistors that can be electrically programmed and erased. The device operates by applying appropriate voltage levels to control pins, allowing for read, write, and erase operations.

Detailed Application Field Plans

The AT28HC64B-90JA finds applications in various electronic systems, including but not limited to: - Embedded systems - Industrial automation - Automotive electronics - Consumer electronics - Communication devices

In embedded systems, it can be used for firmware storage, configuration data storage, or parameter storage. In industrial automation, it can store critical system parameters or log data. In automotive electronics, it can be utilized for storing calibration data or vehicle-specific settings. In consumer electronics, it can serve as non-volatile memory for gaming consoles, set-top boxes, or smart home devices. In communication devices, it can store network configuration data or firmware updates.

Detailed and Complete Alternative Models

  1. AT28C64B-15PU: This model offers a slower access time of 150 nanoseconds but provides the same capacity and functionality.
  2. AT28HC256-12PC: This alternative model offers a higher capacity of 256 kilobits (32 kilobytes) with a slightly slower

Seznam 10 běžných otázek a odpovědí souvisejících s aplikací AT28HC64B-90JA v technických řešeních

Sure! Here are 10 common questions and answers related to the application of AT28HC64B-90JA in technical solutions:

  1. Q: What is the AT28HC64B-90JA? A: The AT28HC64B-90JA is a high-speed, low-power CMOS 64K (8K x 8) EEPROM memory chip.

  2. Q: What are some typical applications for the AT28HC64B-90JA? A: It is commonly used in embedded systems, microcontrollers, industrial control systems, automotive electronics, and other electronic devices that require non-volatile memory storage.

  3. Q: What is the operating voltage range of the AT28HC64B-90JA? A: The AT28HC64B-90JA operates within a voltage range of 4.5V to 5.5V.

  4. Q: What is the maximum clock frequency supported by the AT28HC64B-90JA? A: The AT28HC64B-90JA supports a maximum clock frequency of 90 MHz.

  5. Q: How much data can be stored in the AT28HC64B-90JA? A: The AT28HC64B-90JA has a capacity of 64 kilobits, which is equivalent to 8 kilobytes or 8192 bytes.

  6. Q: Does the AT28HC64B-90JA support byte-level read and write operations? A: Yes, the AT28HC64B-90JA supports both byte-level read and write operations.

  7. Q: Can the AT28HC64B-90JA be reprogrammed multiple times? A: Yes, the AT28HC64B-90JA is an electrically erasable and reprogrammable memory chip, allowing for multiple programming cycles.

  8. Q: What is the endurance rating of the AT28HC64B-90JA? A: The AT28HC64B-90JA has an endurance rating of at least 100,000 write/erase cycles.

  9. Q: Does the AT28HC64B-90JA have any built-in security features? A: No, the AT28HC64B-90JA does not have built-in security features such as hardware encryption or protection against unauthorized access.

  10. Q: Is the AT28HC64B-90JA compatible with standard microcontroller interfaces? A: Yes, the AT28HC64B-90JA uses a standard SPI (Serial Peripheral Interface) for communication, making it compatible with many microcontrollers and other devices.

Please note that these answers are general and may vary depending on the specific implementation and requirements of your technical solution.