AT28HC256-90PU

Product Overview

Category

AT28HC256-90PU belongs to the category of high-speed, low-power Electrically Erasable Programmable Read-Only Memory (EEPROM) chips.

Use

This product is commonly used in electronic devices for storing and retrieving data. It provides non-volatile memory storage that can be electrically erased and reprogrammed.

Characteristics

• High-speed operation: The AT28HC256-90PU offers fast read and write access times, making it suitable for applications requiring quick data retrieval.
• Low power consumption: This EEPROM chip is designed to minimize power usage, making it ideal for battery-powered devices.
• Large storage capacity: With a capacity of 256 kilobits, this chip can store a significant amount of data.
• Durable and reliable: The AT28HC256-90PU is built to withstand harsh environmental conditions and has a long lifespan.

Package

The AT28HC256-90PU comes in a standard plastic DIP (Dual In-line Package) package. This package type allows for easy integration into various electronic circuits.

Essence

The essence of the AT28HC256-90PU lies in its ability to provide reliable and efficient non-volatile memory storage for electronic devices.

Packaging/Quantity

This product is typically packaged in reels or tubes, with each reel or tube containing a specific quantity of AT28HC256-90PU chips. The exact quantity may vary depending on the manufacturer's specifications.

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

Detailed Pin Configuration

The AT28HC256-90PU has a total of 28 pins, each serving a specific function. The pin configuration is as follows:

1. A0 - Address Input
2. A1 - Address Input
3. A2 - Address Input
4. A3 - Address Input
5. A4 - Address Input
6. A5 - Address Input
7. A6 - Address Input
8. A7 - Address Input
9. A8 - Address Input
10. A9 - Address Input
11. A10 - Address Input
12. A11 - Address Input
13. A12 - Address Input
14. A13 - Address Input
15. A14 - Address Input
16. A15 - Address Input
17. CE - Chip Enable Input
18. OE - Output Enable Input
19. WE - Write Enable Input
20. I/O0 - Data Input/Output
21. I/O1 - Data Input/Output
22. I/O2 - Data Input/Output
23. I/O3 - Data Input/Output
24. I/O4 - Data Input/Output
25. I/O5 - Data Input/Output
26. VCC - Power Supply
27. GND - Ground
28. NC - No Connection

Functional Features

• High-speed operation allows for quick data access.
• Low power consumption ensures efficient energy usage.
• Non-volatile memory retains data even when power is disconnected.
• Durable construction makes it suitable for various environments.
• Easy integration into electronic circuits due to standard package format.

Advantages and Disadvantages

Advantages

• Fast read and write access times.
• Low power consumption extends battery life.
• Large storage capacity.
• Reliable and durable design.
• Easy integration into electronic circuits.

Disadvantages

• Limited endurance with a maximum of 100,000 write cycles.
• Relatively high cost compared to other memory storage options.

Working Principles

The AT28HC256-90PU operates based on the principles of EEPROM technology. It utilizes a combination of electrically controlled floating gate transistors and charge storage mechanisms to store and retrieve data. When data is written, charges are trapped in the floating gate, altering the transistor's behavior. These charges can be erased by applying specific electrical signals, allowing for reprogramming of the memory.

Detailed Application Field Plans

The AT28HC256-90PU finds applications in various electronic devices that require non-volatile memory storage. Some common application fields include:

1. Consumer Electronics: Used in digital cameras, smartphones, and portable media players for storing user data and firmware.
2. Automotive Systems: Employed in car navigation systems, engine control units, and infotainment systems for data storage and retrieval.
3. Industrial Control Systems: Utilized in programmable logic controllers (PLCs) and automation equipment for storing configuration data and program code.
4. Medical Devices: Integrated into medical instruments and monitoring systems for data logging and parameter storage.

Detailed and Complete Alternative Models