AT28HC256-90PI

Product Overview

Category

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

Use

This product is commonly used in various electronic devices for non-volatile data storage. It allows for easy and efficient data retrieval even when power is turned off.

Characteristics

• High speed: The AT28HC256-90PI operates at a fast speed, enabling quick access to stored data.
• Low power consumption: This chip is designed to consume minimal power, making it suitable for battery-powered devices.
• Non-volatile memory: The data stored in this EEPROM remains intact even when power is lost.
• Large storage capacity: With a capacity of 256 kilobits, this chip can store a significant amount of data.
• Reliable performance: The AT28HC256-90PI offers reliable and consistent performance over an extended period.

Package

The AT28HC256-90PI comes in a standard Dual In-Line Package (DIP), which consists of two parallel rows of pins. This package type ensures compatibility with a wide range of electronic devices.

Essence

The essence of AT28HC256-90PI lies in its ability to provide high-speed, low-power, and non-volatile data storage in a compact and reliable package.

Packaging/Quantity

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

Specifications

• Operating voltage: 2.7V - 5.5V
• Access time: 90 nanoseconds
• Organization: 32,768 words x 8 bits
• Endurance: 100,000 write cycles
• Data retention: 10 years
• Package type: 28-pin DIP

Detailed Pin Configuration

The AT28HC256-90PI chip 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. /OE - Output Enable
18. /WE - Write Enable
19. /CE - Chip Enable
20. VSS - Ground
21. DQ0 - Data Input/Output
22. DQ1 - Data Input/Output
23. DQ2 - Data Input/Output
24. DQ3 - Data Input/Output
25. DQ4 - Data Input/Output
26. DQ5 - Data Input/Output
27. DQ6 - Data Input/Output
28. DQ7 - Data Input/Output

Functional Features

• High-speed access: The AT28HC256-90PI offers fast access times, allowing for quick retrieval of stored data.
• Low-power consumption: This chip is designed to minimize power consumption, making it suitable for battery-powered devices.
• Non-volatile memory: The data stored in this EEPROM remains intact even when power is lost, ensuring data integrity.
• Easy integration: The AT28HC256-90PI can be easily integrated into various electronic devices due to its standard DIP package.
• Reliable performance: This chip provides reliable and consistent performance, ensuring the integrity of stored data.

Advantages and Disadvantages

Advantages

• High-speed access enables quick retrieval of data.
• Low-power consumption prolongs battery life in portable devices.
• Non-volatile memory ensures data integrity even during power loss.
• Large storage capacity allows for storing a significant amount of data.
• Reliable performance guarantees consistent operation over time.

Disadvantages

• Limited storage capacity compared to other memory technologies.
• Relatively higher cost per bit compared to some alternative memory options.
• Limited endurance with a maximum of 100,000 write cycles.

Working Principles

The AT28HC256-90PI operates based on the principles of EEPROM technology. It utilizes a combination of electrically controlled gates and floating gate transistors 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 removed or retained, allowing for data erasure and programming.

During read operations, the stored