MK21DX256AVLK5

Product Overview

• Category: Microcontroller
• Use: Embedded systems, Internet of Things (IoT) devices, consumer electronics
• Characteristics: High-performance, low-power consumption, extensive peripheral integration
• Package: LQFP (Low-profile Quad Flat Package)
• Essence: Advanced microcontroller with enhanced processing capabilities
• Packaging/Quantity: Available in tape and reel packaging, quantity varies based on customer requirements

Specifications

• Microcontroller Family: Kinetis K Series
• Core: ARM Cortex-M4
• Clock Speed: Up to 72 MHz
• Flash Memory: 256 KB
• RAM: 64 KB
• Operating Voltage: 1.71V to 3.6V
• Operating Temperature: -40°C to +105°C
• I/O Pins: 105
• Communication Interfaces: UART, SPI, I2C, CAN, USB
• Analog-to-Digital Converter (ADC): 16-bit, 16 channels
• Timers: Multiple timers/counters for precise timing operations
• Security Features: Hardware encryption, secure boot, tamper detection

Detailed Pin Configuration

The MK21DX256AVLK5 microcontroller has a total of 105 I/O pins. The pin configuration is as follows:

• Port A: PA0 to PA31
• Port B: PB0 to PB31
• Port C: PC0 to PC31
• Port D: PD0 to PD7
• Port E: PE0 to PE31

For a detailed pinout diagram, please refer to the official datasheet.

Functional Features

• High Performance: The ARM Cortex-M4 core provides efficient processing capabilities, enabling complex tasks to be executed quickly.
• Low Power Consumption: The microcontroller is designed to minimize power consumption, making it suitable for battery-powered devices and energy-efficient applications.
• Extensive Peripheral Integration: The MK21DX256AVLK5 offers a wide range of integrated peripherals, including UART, SPI, I2C, CAN, and USB interfaces, enabling seamless communication with other devices.
• Advanced Analog-to-Digital Conversion: The 16-bit ADC allows accurate conversion of analog signals, making it ideal for sensor-based applications.
• Enhanced Security: Built-in security features such as hardware encryption, secure boot, and tamper detection ensure the protection of sensitive data.

Advantages and Disadvantages

Advantages: - Powerful processing capabilities - Low power consumption - Extensive peripheral integration - Enhanced security features - Versatile application possibilities

Disadvantages: - Limited flash memory compared to some other microcontrollers in the same category - Higher cost compared to entry-level microcontrollers

Working Principles

The MK21DX256AVLK5 microcontroller operates based on the ARM Cortex-M4 core architecture. It executes instructions stored in its flash memory, interacts with various peripherals, and communicates with external devices through the available interfaces. The microcontroller's clock speed determines the rate at which instructions are processed, while the integrated peripherals enable it to perform specific tasks.

Detailed Application Field Plans

The MK21DX256AVLK5 microcontroller finds applications in various fields, including:

1. Embedded Systems: Used in industrial automation, robotics, and control systems.
2. Internet of Things (IoT) Devices: Enables connectivity and control in smart home devices, wearable technology, and environmental monitoring systems.
3. Consumer Electronics: Powers portable devices, audio/video equipment, and gaming consoles.
4. Automotive: Used in automotive electronics for engine management, infotainment systems, and advanced driver-assistance systems (ADAS).
5. Medical Devices: Enables the development of medical monitoring devices, diagnostic equipment, and implantable devices.

Detailed and Complete Alternative Models

1. MK21DX128AVLK5: Similar to MK21DX256AVLK5 but with 128 KB flash memory.
2. MK21DX64AVLK5: Lower-end variant with 64 KB flash memory.
3. MK21DX32AVLK5: Entry-level model with 32 KB flash memory.

These alternative models provide options based on different memory requirements and cost considerations.

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