AT25DF021-MH-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: Provides non-volatile memory storage for various 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 Range: -40°C to +85°C
• Write Endurance: 100,000 cycles
• Data Retention: 20 years

Pin Configuration

The AT25DF021-MH-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 with SPI interface
• Low power consumption in both active and standby modes
• Sector erase and byte/page program operations
• Software and hardware write protection options
• Deep power-down mode for further power savings
• Flexible architecture allows easy integration into various systems

Advantages and Disadvantages

Advantages: - Fast data transfer rate - Low power consumption - Small form factor - High reliability and endurance - Easy integration into different applications

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

Working Principles

The AT25DF021-MH-T is based on the Serial Peripheral Interface (SPI) protocol. It uses a combination of clock and data signals to communicate with the host device. The memory cells are organized into sectors, which can be individually erased or programmed. The chip supports both byte and page programming modes, allowing flexible data storage options. The write protection features ensure data integrity and prevent accidental modifications.

Detailed Application Field Plans

The AT25DF021-MH-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 and data logging.
2. Automotive: Integrated into automotive systems for storing configuration data, event logs, and firmware updates.
3. Industrial Control Systems: Utilized in industrial automation equipment for program storage, parameter settings, and data logging.
4. Medical Devices: Incorporated into medical instruments and devices for storing patient data, firmware, and calibration information.
5. IoT (Internet of Things): Integrated into IoT devices for data logging, firmware updates, and sensor calibration.

Detailed and Complete Alternative Models

• AT25DF041A-MH-T: 4 Megabit Serial Flash Memory
• AT25DF081A-MH-T: 8 Megabit Serial Flash Memory
• AT25DF161A-MH-T: 16 Megabit Serial Flash Memory
• AT25DF321A-MH-T: 32 Megabit Serial Flash Memory
• AT25DF641A-MH-T: 64 Megabit Serial Flash Memory

These alternative models offer higher storage capacities while maintaining similar characteristics and functionality as the AT25DF021-MH-T.

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