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AT28HC256F-90JI
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AT28HC256F-90JI

Product Overview

Category

AT28HC256F-90JI belongs to the category of high-speed, low-power Electrically Erasable Programmable Read-Only Memory (EEPROM) chips.

Use

This product is primarily used for non-volatile data storage in various electronic devices such as microcontrollers, computers, and consumer electronics.

Characteristics

  • High-speed operation
  • Low power consumption
  • Non-volatile memory
  • Large storage capacity
  • Reliable data retention
  • Easy to interface with other components

Package

AT28HC256F-90JI is available in a 32-pin plastic package.

Essence

The essence of this product lies in its ability to store and retrieve data reliably, even when the power supply is disconnected.

Packaging/Quantity

AT28HC256F-90JI is typically packaged in reels or tubes, with a quantity of 1000 units per package.

Specifications

  • Operating Voltage: 2.7V - 5.5V
  • Access Time: 90ns
  • Memory Size: 256 kilobits (32 kilobytes)
  • Organization: 32K x 8 bits
  • Interface: Parallel
  • Write Endurance: 100,000 cycles
  • Data Retention: 10 years

Detailed Pin Configuration

  1. A0
  2. A1
  3. A2
  4. A3
  5. A4
  6. A5
  7. A6
  8. A7
  9. VSS (Ground)
  10. CE (Chip Enable)
  11. OE (Output Enable)
  12. WE (Write Enable)
  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 (No Connection)
  22. VCC (Power Supply)
  23. NC
  24. NC
  25. NC
  26. NC
  27. NC
  28. NC
  29. NC
  30. NC
  31. NC
  32. NC

Functional Features

  • High-speed operation allows for fast data access and retrieval.
  • Low power consumption ensures efficient use of energy.
  • Non-volatile memory retains data even when power is disconnected.
  • Large storage capacity provides ample space for data storage needs.
  • Easy interface with other components simplifies integration into electronic systems.

Advantages and Disadvantages

Advantages

  • Fast operation speed enables quick data processing.
  • Low power consumption prolongs battery life in portable devices.
  • Reliable data retention ensures data integrity over time.
  • Ample storage capacity accommodates a wide range of applications.
  • Easy integration simplifies system design and development.

Disadvantages

  • Limited write endurance may require careful management of write operations.
  • Parallel interface may be less suitable for certain applications compared to serial interfaces.

Working Principles

AT28HC256F-90JI utilizes EEPROM technology, which allows for electrically erasing and reprogramming of data. The memory cells within the chip store data as charge levels, which can be modified through electrical signals. When data is written or erased, the charge levels are adjusted accordingly. The chip's internal circuitry manages the read, write, and erase operations, ensuring reliable data storage and retrieval.

Detailed Application Field Plans

AT28HC256F-90JI finds application in various fields, including: 1. Microcontrollers: Used for program storage and data logging. 2. Computers: Employed in BIOS chips and firmware storage. 3. Consumer Electronics: Utilized in devices such as digital cameras, set-top boxes, and gaming consoles for data storage.

Detailed and Complete Alternative Models

  1. AT28HC256F-90JU: Similar to AT28HC256F-90JI, but available in a different package.
  2. AT28HC256F-90PC: Parallel EEPROM chip with the same specifications but a different pin configuration.
  3. AT28HC256F-90DM: Dual-mode EEPROM chip with additional features for enhanced functionality.

These alternative models offer similar capabilities and can be considered as substitutes based on specific requirements.

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Lista 10 Vanliga frågor och svar relaterade till tillämpningen av AT28HC256F-90JI i tekniska lösningar

Sure! Here are 10 common questions and answers related to the application of AT28HC256F-90JI in technical solutions:

  1. Q: What is the AT28HC256F-90JI? A: The AT28HC256F-90JI is a high-speed, low-power CMOS 256K (32K x 8) EEPROM memory chip.

  2. Q: What are the key features of AT28HC256F-90JI? A: Some key features include a 90ns access time, wide voltage range (2.7V to 5.5V), and a high endurance of 100,000 write cycles.

  3. Q: What applications can the AT28HC256F-90JI be used for? A: It can be used in various applications such as industrial control systems, automotive electronics, medical devices, and consumer electronics.

  4. Q: How does the AT28HC256F-90JI connect to a microcontroller or processor? A: The AT28HC256F-90JI uses a standard parallel interface, typically connected to the address and data bus of the microcontroller or processor.

  5. Q: Can the AT28HC256F-90JI be used for code storage in microcontrollers? A: Yes, it can be used for storing program code, configuration data, or other non-volatile information in microcontrollers.

  6. Q: What is the maximum operating frequency of the AT28HC256F-90JI? A: The maximum operating frequency is determined by the access time, which is 90ns in this case.

  7. Q: Does the AT28HC256F-90JI support hardware write protection? A: Yes, it supports hardware write protection using a write protect pin or a software write protection mechanism.

  8. Q: Can the AT28HC256F-90JI be reprogrammed multiple times? A: Yes, it can be reprogrammed multiple times as it has a high endurance of 100,000 write cycles.

  9. Q: What is the typical power consumption of the AT28HC256F-90JI? A: The typical power consumption is low, thanks to its low-power CMOS technology.

  10. Q: Is the AT28HC256F-90JI available in different package options? A: Yes, it is available in various package options such as PDIP, PLCC, and TSOP, allowing flexibility in design and integration.

Please note that these answers are general and may vary depending on the specific application or use case.