AT25DN256-XMHF-B

Product Overview

• Category: Non-volatile Memory
• Use: Data storage and retrieval
• Characteristics: High-speed, low-power, reliable
• Package: XMHF-B
• Essence: Flash memory
• Packaging/Quantity: Tape and reel, 2500 units per reel

Specifications

• Memory Size: 256 Megabits (32 Megabytes)
• Interface: Serial Peripheral Interface (SPI)
• Operating Voltage: 2.7V to 3.6V
• Operating Temperature: -40°C to +85°C
• Read/Write Speed: Up to 85 MHz
• Data Retention: Up to 20 years
• Endurance: 100,000 write cycles

Pin Configuration

The AT25DN256-XMHF-B has a total of 8 pins:

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

Functional Features

• High-speed data transfer using SPI interface
• Low power consumption for extended battery life
• Reliable data retention and endurance
• Hardware and software write protection options
• Deep power-down mode for further power savings
• Sector erase and byte/page program operations

Advantages

• Fast read/write speeds enable quick data access
• Low power consumption makes it suitable for portable devices
• High endurance ensures long-lasting performance
• Flexible write protection options enhance data security
• Compact package allows for easy integration into various systems

Disadvantages

• Limited storage capacity compared to other memory types
• Relatively higher cost per unit compared to traditional storage media
• Requires a compatible SPI interface for communication

Working Principles

The AT25DN256-XMHF-B is based on flash memory technology. It utilizes a floating-gate transistor structure to store and retrieve data. The memory cells are organized into sectors, which can be individually erased or programmed. The Serial Peripheral Interface (SPI) allows for easy communication with the device, enabling fast and reliable data transfer.

Detailed Application Field Plans

The AT25DN256-XMHF-B is widely used in various applications that require non-volatile memory storage. Some of the common application fields include:

1. Consumer Electronics: Used in smartphones, tablets, digital cameras, and portable media players for data storage.
2. Automotive: Integrated into automotive systems for storing firmware, configuration data, and event logs.
3. Industrial Automation: Utilized in industrial control systems, PLCs, and HMI devices for program storage and data logging.
4. Medical Devices: Incorporated into medical equipment for storing patient data, firmware, and calibration information.
5. IoT Devices: Integrated into IoT devices for data logging, firmware updates, and configuration storage.

Detailed and Complete Alternative Models

1. AT25SF041: 4 Megabit SPI Flash Memory
2. AT25DF641: 64 Megabit SPI Flash Memory
3. AT25SL321: 32 Megabit SPI Flash Memory
4. AT25DL081: 8 Megabit SPI Flash Memory
5. AT25PE512C: 512 Kilobit SPI Serial EEPROM

These alternative models offer different storage capacities and features to cater to specific application requirements.

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