AT25DF256-XMHN-B

Product Overview

Category

AT25DF256-XMHN-B belongs to the category of Serial Flash Memory.

Use

It is primarily used for storing data in electronic devices, such as microcontrollers, digital cameras, and consumer electronics.

Characteristics

• High storage capacity: The AT25DF256-XMHN-B has a storage capacity of 256 megabits (32 megabytes).
• Serial interface: It utilizes a serial peripheral interface (SPI) for communication with the host device.
• Low power consumption: The device operates at low power, making it suitable for battery-powered applications.
• Fast read and write speeds: It offers high-speed data transfer rates, enabling quick access to stored information.
• Reliable performance: The flash memory is designed to provide reliable and durable data storage.

Package

The AT25DF256-XMHN-B is available in a small form factor package, commonly known as an 8-pin SOIC (Small Outline Integrated Circuit) package.

Essence

The essence of AT25DF256-XMHN-B lies in its ability to provide non-volatile storage for electronic devices, allowing them to retain data even when powered off.

Packaging/Quantity

The product is typically packaged in reels or tubes, with each reel or tube containing a specific quantity of AT25DF256-XMHN-B units. The exact quantity may vary depending on the manufacturer's specifications.

Specifications

• Storage Capacity: 256 megabits (32 megabytes)
• Interface: Serial Peripheral Interface (SPI)
• Supply Voltage: 2.7V - 3.6V
• Operating Temperature Range: -40°C to +85°C
• Data Retention: Up to 20 years
• Erase/Program Cycles: 100,000 cycles

Detailed Pin Configuration

1. Chip Select (/CS)
2. Serial Clock (SCK)
3. Serial Data Input/Output (SI/O)
4. Hold (/HOLD)
5. Write Protect (/WP)
6. Ground (GND)
7. VCC Power Supply
8. Reset (/RESET)

Functional Features

• Fast Read and Write Operations: The AT25DF256-XMHN-B offers high-speed read and write operations, allowing for efficient data transfer.
• Sector Erase Capability: It supports sector erase functionality, enabling selective erasure of specific memory sectors.
• Software Protection: The device includes software protection features to prevent unauthorized access or modification of stored data.
• Deep Power-Down Mode: It has a deep power-down mode that reduces power consumption when the device is not in use.
• Continuous Read Mode: The continuous read mode allows for sequential reading of data without the need for repeated commands.

Advantages and Disadvantages

Advantages

• High storage capacity
• Fast read and write speeds
• Low power consumption
• Reliable performance
• Sector erase capability

Disadvantages

• Limited erase/program cycles
• Requires a serial interface for communication

Working Principles

The AT25DF256-XMHN-B utilizes flash memory technology to store data. It employs a combination of floating-gate transistors and electrically isolated gates to trap and retain electrical charges, representing binary data. The stored data can be accessed and modified through the serial peripheral interface (SPI) by sending appropriate commands and addresses.

Detailed Application Field Plans

The AT25DF256-XMHN-B finds applications in various electronic devices, including but not limited to: - Microcontrollers - Digital cameras - Set-top boxes - Printers - Smartphones - Automotive electronics

Detailed and Complete Alternative Models

1. AT25DF512C-XMHY-B: 512 megabit (64 megabyte) Serial Flash Memory with similar features and characteristics.
2. AT25SF041-XMHD-B: 4 megabit (512 kilobyte) Serial Flash Memory with lower storage capacity but compatible interface.

These alternative models offer different storage capacities and may have slight variations in specifications, but they serve similar purposes and can be used as alternatives to the AT25DF256-XMHN-B.

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