AT25DF021A-MHNHR-T

Product Overview

• Category: Integrated Circuit
• Use: Non-volatile Serial Flash Memory
• Characteristics: High-speed, low-power, small form factor
• Package: 8-pin SOIC (Small Outline Integrated Circuit)
• Essence: Stores and retrieves digital information in electronic devices
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Memory Size: 2 Megabits (256 Kilobytes)
• Interface: Serial Peripheral Interface (SPI)
• Operating Voltage: 2.7V to 3.6V
• Operating Temperature: -40°C to +85°C
• Write Endurance: 100,000 cycles
• Data Retention: 20 years

Pin Configuration

The AT25DF021A-MHNHR-T has the following pin configuration:

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 up to 75 MHz
• Low power consumption during active and standby modes
• Flexible erase and program operations
• Sector protection with hardware write protect
• Deep power-down mode for ultra-low power consumption
• Software and hardware reset options

Advantages and Disadvantages

Advantages: - Compact size and lightweight - High-speed data transfer - Low power consumption - Long data retention period - Easy integration into various electronic devices

Disadvantages: - Limited memory capacity compared to other flash memory options - Relatively higher cost per megabit compared to larger capacity flash memory chips

Working Principles

The AT25DF021A-MHNHR-T operates based on the Serial Peripheral Interface (SPI) protocol. It uses a combination of clock and data signals to communicate with the host device. The chip select pin is used to enable or disable the device for communication. The serial clock synchronizes the data transfer, while the serial data input and output pins handle the exchange of information between the device and the host.

Detailed Application Field Plans

The AT25DF021A-MHNHR-T is widely used in various electronic devices that require non-volatile memory storage. Some common application fields include:

1. Consumer Electronics: Used in smartphones, tablets, digital cameras, and portable media players for firmware storage, data logging, and system configuration.
2. Automotive: Integrated into automotive electronics for storing calibration data, firmware updates, and event logging.
3. Industrial Control Systems: Utilized in industrial automation systems for program storage, parameter settings, and data logging.
4. Medical Devices: Incorporated into medical equipment for storing patient data, firmware updates, and configuration settings.
5. Internet of Things (IoT): Integrated into IoT devices for data logging, firmware updates, and sensor calibration.

Detailed and Complete Alternative Models

• AT25DF041A-MHNHR-T: 4 Megabit (512 Kilobytes) version of the same flash memory chip.
• AT25DF081A-MHNHR-T: 8 Megabit (1 Megabyte) version of the same flash memory chip.
• AT25DF161A-MHNHR-T: 16 Megabit (2 Megabytes) version of the same flash memory chip.
• AT25DF321A-MHNHR-T: 32 Megabit (4 Megabytes) version of the same flash memory chip.

These alternative models offer increased memory capacity while maintaining similar characteristics and functionality.

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