AT28BV256-20TU

Product Overview

Category

AT28BV256-20TU 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 remains intact even when power is removed.
• High capacity: The AT28BV256-20TU has a storage capacity of 256 kilobits (32 kilobytes).
• Low power consumption: It operates at a low voltage and consumes minimal power.
• Fast access time: The device offers a fast access time of 200 nanoseconds.

Package

The AT28BV256-20TU is available in a surface mount package, specifically the Thin Small Outline Package (TSOP).

Essence

The essence of this product lies in its ability to provide reliable and non-volatile storage for electronic systems.

Packaging/Quantity

The AT28BV256-20TU is typically packaged in reels, with each reel containing a specific quantity of devices. The exact quantity may vary depending on the manufacturer's specifications.

Specifications

• Memory Type: EEPROM (Electrically Erasable Programmable Read-Only Memory)
• Organization: 32K x 8 bits
• Operating Voltage: 2.7V - 3.6V
• Operating Temperature Range: -40°C to +85°C
• Data Retention: 10 years
• Endurance: 100,000 write cycles

Pin Configuration

The AT28BV256-20TU has a total of 32 pins. The pin configuration is as follows:

1. A16
2. A14
3. A12
4. A7
5. A6
6. A5
7. A4
8. A3
9. A2
10. A1
11. A0
12. VCC
13. OE#
14. CE#
15. WE#
16. I/O0
17. I/O1
18. I/O2
19. I/O3
20. I/O4
21. I/O5
22. I/O6
23. I/O7
24. NC
25. GND
26. A8
27. A9
28. A11
29. A13
30. A15
31. A10
32. WP#

Functional Features

• Byte-wise Read and Write: The AT28BV256-20TU allows individual bytes to be read from or written to the memory.
• Hardware Data Protection: The device features a Write Protect (WP#) pin that can be used to prevent accidental writes.
• Fast Page Write: It supports fast page write operations, allowing multiple bytes to be programmed in a single operation.

Advantages and Disadvantages

Advantages

• Non-volatile storage ensures data integrity even during power loss.
• High storage capacity for various applications.
• Low power consumption extends battery life in portable devices.
• Fast access time enables quick data retrieval.

Disadvantages

• Limited endurance compared to other types of memory.
• Relatively higher cost per bit compared to volatile memory technologies.

Working Principles

The AT28BV256-20TU is based on EEPROM technology, which utilizes floating-gate transistors to store and retrieve data. When writing data, an electric charge is applied to the floating gate, altering its electrical characteristics. This change in charge determines the stored data. During read operations, the state of the floating gate is measured to determine the stored value.

Detailed Application Field Plans

The AT28BV256-20TU finds applications in various electronic systems, including but not limited to: - Microcontrollers - Embedded systems - Industrial control systems - Automotive electronics - Consumer electronics

Detailed and Complete Alternative Models

1. AT28C256-15PU: Similar to the AT28BV256-20TU, but operates at a lower voltage (2.7V - 5.5V) and has a slower access time (150 nanoseconds).
2. AT28HC256-12PC: Offers higher endurance (1,000,000 write cycles) and operates at a wider temperature range (-40°C to +125°C).

These alternative models provide options with different specifications to suit specific application requirements.

In conclusion, the AT28BV256-20TU is a non-volatile memory device that offers high capacity, low power consumption, and fast access time. It finds applications in various electronic systems and provides reliable data storage. While it has limitations in terms of endurance and cost, alternative models are available to cater to different needs.