The PK21DX256V is a microcontroller from the Kinetis PK series by NXP Semiconductors (formerly Freescale). It's a powerful and versatile device based on the ARM Cortex-M4 core, designed for a wide array of embedded applications. This microcontroller boasts a high level of integration, combining processing power, memory, and a rich set of peripherals to meet the demands of modern embedded systems.

Applications

• Consumer Electronics: Used in devices like wearables, gaming controllers, and audio players.
• Industrial Control: Suitable for motor control, sensor interfaces, and automation systems.
• Medical Devices: Can be integrated into portable medical instruments and monitoring equipment.
• Internet of Things (IoT): Ideal for IoT devices requiring processing, connectivity, and security features.
• Automotive Applications: Used in body control modules and other automotive systems.

Features

• ARM Cortex-M4 Core: Provides high-performance processing with a floating-point unit (FPU) for efficient calculations.
• 256KB Flash Memory: Offers ample space for program code and data storage.
• 32KB SRAM: Provides fast access memory for data manipulation and real-time processing.
• Multiple Communication Interfaces: Includes UART, SPI, I2C for serial communication with other devices.
• Analog-to-Digital Converter (ADC): Enables the conversion of analog signals to digital data for sensor interfacing.
• Digital-to-Analog Converter (DAC): Allows the generation of analog signals for control and output applications.
• Timers and PWM Modules: Facilitates precise timing and control of external devices and processes.
• Low-Power Modes: Optimizes power consumption for battery-powered applications.
• Security Features: Includes memory protection unit (MPU) to enhance system security.

Benefits

• High Performance: The ARM Cortex-M4 core delivers excellent processing power for complex algorithms and real-time applications.
• Integrated Peripherals: Reduces the need for external components, simplifying system design and lowering costs.
• Flexibility: The rich set of peripherals and communication interfaces allows the microcontroller to be adapted to various applications.
• Low Power Consumption: Extends battery life in portable and energy-sensitive applications.
• Robust Security: Protects against unauthorized access and tampering.
• Simplified Development: NXP provides comprehensive development tools and software libraries to accelerate product development.

Technical Specifications

The PK21DX256V operates at a clock frequency of up to 72 MHz. It supports a wide operating voltage range (typically 1.71V to 3.6V), making it suitable for various power supply configurations. The microcontroller is available in different package options, including QFN and LQFP. It also features a wide temperature range, allowing it to operate reliably in harsh environments. It supports DMA (Direct Memory Access) for high-speed data transfer between peripherals and memory without CPU intervention. Further, the device has built-in debugging interfaces for ease of code troubleshooting.