AT28BV256-20PC

Product Overview

Category

AT28BV256-20PC belongs to the category of non-volatile memory devices.

Use

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

Characteristics

• Non-volatile: Retains data even when power is turned off.
• High capacity: Offers a storage capacity of 256 kilobits.
• Low power consumption: Operates on low power, making it suitable for battery-powered devices.
• Fast access time: Provides quick access to stored data.
• Durable: Withstands harsh environmental conditions.

Package

AT28BV256-20PC comes in a standard dual in-line package (DIP).

Essence

The essence of this product lies in its ability to store and retrieve digital information reliably and efficiently.

Packaging/Quantity

AT28BV256-20PC is typically packaged in tubes or trays, with each containing a specific quantity of chips. The exact packaging and quantity may vary depending on the supplier.

Specifications

• Operating Voltage: 2.7V - 3.6V
• Access Time: 200ns
• Organization: 32K x 8 bits
• Interface: Parallel
• Temperature Range: -40°C to +85°C
• Data Retention: 20 years

Detailed Pin Configuration

The AT28BV256-20PC has a total of 28 pins, which are assigned specific functions as follows:

1. A0-A14: Address Inputs
2. CE: Chip Enable
3. OE: Output Enable
4. WE: Write Enable
5. I/O0-I/O7: Data Input/Output
6. VCC: Power Supply
7. GND: Ground

Functional Features

• Random Access: Allows direct access to any memory location.
• Byte-Writable: Enables individual byte-level write operations.
• Erasable: Supports full-chip erasure for rewriting data.
• Hardware Data Protection: Provides protection against accidental writes.

Advantages and Disadvantages

Advantages

• Non-volatile nature ensures data retention even during power loss.
• High storage capacity for various applications.
• Low power consumption extends battery life.
• Fast access time enhances system performance.
• Durable design withstands challenging environments.

Disadvantages

• Limited rewrite cycles before memory degradation.
• Higher cost compared to volatile memory alternatives.
• Larger physical footprint due to the DIP package.

Working Principles

AT28BV256-20PC utilizes a combination of electronic circuits and non-volatile memory cells to store and retrieve digital information. The memory cells consist of floating-gate transistors that can be electrically programmed and erased. When data is written, charges are trapped in the floating gate, altering the transistor's behavior. This change is detected during read operations, allowing the retrieval of stored data.

Detailed Application Field Plans

AT28BV256-20PC finds application in various fields, including: 1. Embedded Systems: Used for program storage in microcontrollers and microprocessors. 2. Consumer Electronics: Employed in devices like digital cameras, printers, and set-top boxes for data storage. 3. Automotive: Utilized in automotive electronics for storing configuration data and firmware. 4. Industrial Control Systems: Integrated into control units for storing critical parameters and program code.

Detailed and Complete Alternative Models

1. AT28C256: Similar capacity and functionality but with slower access times.
2. AT28HC256: Offers high-speed access and extended temperature range.
3. AT28LV256: Low-voltage variant suitable for battery-powered applications.

These alternative models provide options based on specific requirements such as speed, voltage, and temperature range.

In conclusion, AT28BV256-20PC is a non-volatile memory device with high capacity, low power consumption, and fast access time. It finds application in various fields, including embedded systems, consumer electronics, automotive, and industrial control systems. While it has limitations such as limited rewrite cycles and higher cost, alternative models are available to cater to specific needs.