AT28C256-15SU-T

Product Overview

Category

AT28C256-15SU-T belongs to the category of non-volatile memory devices.

Use

This product is primarily used for storing and retrieving digital information in electronic systems.

Characteristics

• Non-volatile: The stored data is retained even when power is removed.
• High capacity: The AT28C256-15SU-T has a storage capacity of 256 kilobits (32 kilobytes).
• Fast access time: It operates at a speed of 150 nanoseconds, allowing for quick data retrieval.
• Low power consumption: The device is designed to minimize power usage, making it suitable for battery-powered applications.

Package

The AT28C256-15SU-T is available in a surface mount package (SU) which facilitates easy integration onto printed circuit boards.

Essence

The essence of this product lies in its ability to provide reliable and non-volatile storage for electronic systems, ensuring that critical data is preserved even during power interruptions.

Packaging/Quantity

The AT28C256-15SU-T is typically packaged in reels or tubes, with each reel or tube containing a specific quantity of devices. The exact packaging and quantity may vary depending on the supplier.

Specifications

• Memory Type: Electrically Erasable Programmable Read-Only Memory (EEPROM)
• Organization: 32K x 8 bits
• Supply Voltage: 2.7V - 5.5V
• Operating Temperature Range: -40°C to +85°C
• Access Time: 150 ns
• Data Retention: 10 years
• Endurance: 100,000 write cycles

Detailed Pin Configuration

The AT28C256-15SU-T has a total of 28 pins. 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. VCC - Power Supply
10. OE - Output Enable
11. CE - Chip Enable
12. WE - Write Enable
13. I/O0 - Data Input/Output
14. I/O1 - Data Input/Output
15. I/O2 - Data Input/Output
16. I/O3 - Data Input/Output
17. I/O4 - Data Input/Output
18. I/O5 - Data Input/Output
19. I/O6 - Data Input/Output
20. I/O7 - Data Input/Output
21. NC - No Connection
22. GND - Ground
23. NC - No Connection
24. NC - No Connection
25. NC - No Connection
26. NC - No Connection
27. NC - No Connection
28. NC - No Connection

Functional Features

• Byte-wise Read and Write: The AT28C256-15SU-T allows for individual byte-level read and write operations, providing flexibility in data manipulation.
• Hardware Data Protection: The device features a hardware protection mechanism that prevents accidental writes to the memory, ensuring data integrity.
• High-Speed Operation: With an access time of 150 ns, the AT28C256-15SU-T enables fast data retrieval, reducing system latency.

Advantages and Disadvantages

Advantages

• Non-volatile storage ensures data retention even during power loss.
• High capacity allows for storing a significant amount of information.
• Low power consumption makes it suitable for battery-powered applications.
• Fast access time enhances system performance.

Disadvantages

• Limited endurance of 100,000 write cycles may be a constraint in certain applications.
• Higher cost compared to other types of memory technologies.

Working Principles

The AT28C256-15SU-T is based on EEPROM technology. It utilizes a combination of electrically controlled gates and floating gate transistors to store and retrieve data. When a write operation is performed, an electrical charge is applied to the floating gate, altering its threshold voltage and thereby storing the desired data. During read operations, the stored charge is measured to determine the logic state of each memory cell.

Detailed Application Field Plans

The AT28C256-15SU-T finds application in various electronic systems that require non-volatile storage, such as: - Embedded systems - Microcontrollers - Industrial control systems - Automotive electronics - Consumer electronics

Detailed and Complete Alternative Models

• AT28C256-12PC: Similar to AT28C256-15SU-T but operates at a slower access time of 200 ns.
• AT28C256-20PI: Similar to AT28C256-15SU-T but operates at a faster access time