AT28HC256-90UM/883

Product Overview

Category

AT28HC256-90UM/883 belongs to the category of high-speed, high-density Electrically Erasable Programmable Read-Only Memory (EEPROM) chips.

Use

This product is commonly used in various electronic devices and systems for non-volatile data storage. It allows for easy and efficient data retrieval and modification.

Characteristics

• High-speed operation
• High-density storage capacity
• Non-volatile memory
• Electrically erasable and programmable
• Durable and reliable

Package

AT28HC256-90UM/883 is available in a standard 28-pin Dual In-line Package (DIP). This package provides ease of integration into electronic circuits and ensures compatibility with existing designs.

Essence

The essence of AT28HC256-90UM/883 lies in its ability to store and retrieve data reliably and efficiently. It offers a high-speed solution for non-volatile memory requirements in various applications.

Packaging/Quantity

AT28HC256-90UM/883 is typically packaged in reels or tubes, depending on the manufacturer's specifications. The quantity per package varies but is usually in the range of 25 to 100 units.

Specifications

• Operating Voltage: 2.7V - 5.5V
• Storage Capacity: 256 kilobits (32 kilobytes)
• Access Time: 90 nanoseconds
• Interface: Parallel
• Data Retention: Up to 10 years
• Endurance: 100,000 write cycles

Detailed Pin Configuration

1. A0
2. A1
3. A2
4. A3
5. A4
6. A5
7. A6
8. A7
9. A8
10. A9
11. A10
12. A11
13. A12
14. A13
15. A14
16. VSS (Ground)
17. A15
18. CE (Chip Enable)
19. OE (Output Enable)
20. WE (Write Enable)
21. I/O0
22. I/O1
23. I/O2
24. I/O3
25. I/O4
26. I/O5
27. I/O6
28. VCC (Power)

Functional Features

• High-speed data access and retrieval
• Electrically erasable and programmable memory
• Low power consumption
• Reliable data retention
• Easy integration into existing designs

Advantages and Disadvantages

Advantages

• High-speed operation allows for efficient data processing.
• Large storage capacity meets the requirements of various applications.
• Electrically erasable and programmable nature enables easy modification of stored data.
• Durable and reliable, ensuring long-term data integrity.
• Compatibility with existing designs simplifies integration.

Disadvantages

• Relatively higher cost compared to other non-volatile memory options.
• Limited endurance with a maximum of 100,000 write cycles.

Working Principles

AT28HC256-90UM/883 utilizes EEPROM technology to store and retrieve data. It consists of a grid of memory cells that can be electrically programmed or erased. The data is stored in these cells by applying appropriate voltage levels to specific pins. The stored data can be read by activating the output enable pin and accessing the desired memory location.

Detailed Application Field Plans

AT28HC256-90UM/883 finds application in various fields, including: 1. Embedded systems 2. Automotive electronics 3. Industrial control systems 4. Communication devices 5. Medical equipment

In embedded systems, it can be used for firmware storage and data logging. In automotive electronics, it can store critical information such as calibration data and vehicle parameters. Industrial control systems can utilize it for storing configuration settings and operational data. Communication devices can benefit from its high-speed operation for data buffering and caching. Medical equipment can use it for storing patient data and device configurations.

Detailed and Complete Alternative Models

1. AT28C256-15PU: 256 kilobit EEPROM with a 150 nanosecond access time.
2. AT28HC256E-90UM/883: High-speed, high-density EEPROM with a 90 nanosecond access time.
3. AT28BV256-20TU: 256 kilobit EEPROM with a 200 nanosecond access time and a wide operating voltage range.

These alternative models offer similar functionality and can be considered as replacements for AT28HC256-90UM/883 based on specific application requirements.

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