AT28HC256F-90FM/883

Product Overview

Category

AT28HC256F-90FM/883 belongs to the category of high-speed, high-density 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 communication systems.

Characteristics

• High-speed operation: The AT28HC256F-90FM/883 offers fast read and write access times, making it suitable for applications requiring quick data retrieval.
• High-density storage: With a capacity of 256 kilobits, this EEPROM chip provides ample space for storing large amounts of data.
• Electrically erasable: The AT28HC256F-90FM/883 can be easily erased and reprogrammed electrically, eliminating the need for physical removal or replacement of the chip.
• Low power consumption: This chip is designed to operate efficiently with minimal power requirements, making it suitable for battery-powered devices.
• Extended temperature range: The AT28HC256F-90FM/883 is capable of operating reliably over a wide temperature range, making it suitable for use in harsh environments.

Package and Quantity

The AT28HC256F-90FM/883 is available in a ceramic package, denoted by the "883" suffix. It is typically supplied in tape and reel packaging, with a quantity of 100 units per reel.

Specifications

• Operating voltage: 2.7V to 5.5V
• Access time: 90 nanoseconds
• Organization: 32,768 words x 8 bits
• Data retention: 10 years
• Endurance: 100,000 write cycles

Pin Configuration

The AT28HC256F-90FM/883 features a 28-pin dual in-line package (DIP) with the following pin configuration:

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. GND
23. NC
24. NC
25. NC
26. NC
27. NC
28. NC

Functional Features

• Random access: The AT28HC256F-90FM/883 allows for random access to any memory location, enabling efficient data retrieval.
• Byte-wise programming: This chip supports byte-wise programming, allowing for flexible and precise data storage.
• Hardware and software protection: The AT28HC256F-90FM/883 provides various protection mechanisms to prevent unauthorized access or accidental modification of stored data.
• High reliability: With its robust design and extensive testing, this EEPROM chip offers high reliability and data integrity.

Advantages and Disadvantages

Advantages

• Fast read and write access times
• High-density storage capacity
• Electrically erasable and reprogrammable
• Low power consumption
• Wide operating temperature range

Disadvantages

• Relatively higher cost compared to other non-volatile memory options
• Limited endurance compared to some newer memory technologies

Working Principles

The AT28HC256F-90FM/883 utilizes a combination of electronic circuits and memory cells to store and retrieve data. It employs a floating-gate transistor structure that can be electrically programmed and erased. The stored data remains intact even when the power is turned off, making it non-volatile.

Detailed Application Field Plans

The AT28HC256F-90FM/883 finds applications in various fields, including: 1. Embedded systems: Used for firmware storage in microcontrollers and other embedded devices. 2. Communication systems: Employed for storing configuration data, firmware updates, and parameter settings. 3. Industrial automation: Utilized for data logging, configuration storage, and system parameter management. 4. Automotive electronics: Used for storing calibration data, fault codes, and configuration settings in automotive control units.

Alternative Models

Several alternative models with similar features and specifications to the AT28HC256F-90FM/883 include: - AT28C256 - AT28HC256 - AT28BV256 - AT28LV256

These models offer compatibility and can be used as drop-in replacements in many applications.

In conclusion, the AT28HC256F-90FM/883 is a high-speed, high-density EEPROM chip that provides reliable non-volatile data storage. With its fast access times, low power consumption, and extended temperature