ATSAMD21G18A-AU

ATSAMD21G18A-AU - High-Performance 32-Bit ARM® Cortex®-M0+ Microcontroller

The ATSAMD21G18A-AU from Microchip Technology represents the pinnacle of 32-bit microcontroller design, featuring a powerful ARM® Cortex®-M0+ core operating at 48MHz. As part of the acclaimed SAM D21G series with Functional Safety (FuSa) certification, this MCU delivers exceptional performance, energy efficiency, and reliability for mission-critical embedded system applications across IoT, automotive, and industrial sectors.

Key Features & Benefits

• High-Performance ARM® Cortex®-M0+ Core: 32-bit RISC architecture running at 48MHz delivers up to 2.46 CoreMark/MHz, providing efficient processing power for demanding real-time applications while maintaining ultra-low power consumption
• Generous Memory Resources: 256KB Flash program memory with read-while-write capability and 32KB SRAM enable complex application development with ample space for code, data, and over-the-air update buffers
• Comprehensive Connectivity Suite: Full-speed USB 2.0 device interface, multiple I2C, SPI, and UART/USART peripherals, plus LINbus support enable seamless integration with sensors, displays, wireless modules, and communication networks
• Advanced Peripheral Integration: Direct Memory Access (DMA) controller, Inter-IC Sound (I2S) interface, flexible PWM outputs, watchdog timer, and brown-out detection ensure robust, autonomous operation in industrial environments
• Precision Analog Capabilities: 14-channel 12-bit ADC with up to 350ksps sampling rate and 1-channel 10-bit DAC provide accurate analog signal acquisition and generation for sensor interfacing and control applications
• Extensive I/O Flexibility: 38 general-purpose I/O pins with configurable pull-ups/pull-downs, interrupt capability, and peripheral multiplexing offer maximum design flexibility for complex system architectures
• Wide Operating Voltage Range: 1.62V to 3.6V supply voltage compatibility enables direct battery operation, low-power design optimization, and compatibility with various logic levels
• Extended Temperature Range: -40°C to +85°C operation ensures reliable performance in harsh automotive, industrial, and outdoor IoT deployment scenarios
• Compact 48-TQFP Package: Space-efficient 7x7mm surface-mount package with 0.5mm pitch optimizes PCB real estate in space-constrained embedded designs
• Functional Safety Ready: FuSa certification support enables development of safety-critical applications meeting IEC 61508 and ISO 26262 standards
• RoHS Compliant: Lead-free, environmentally friendly manufacturing meets global regulatory requirements for commercial and industrial products

Ideal Applications & Use Cases

The ATSAMD21G18A-AU excels in a wide range of embedded applications including:

• IoT Edge Devices: Smart sensors, environmental monitoring systems, wireless gateway nodes, and battery-powered data loggers
• Industrial Automation: Programmable logic controllers (PLCs), motor control systems, human-machine interfaces (HMIs), and industrial sensor networks
• Consumer Electronics: Wearable fitness trackers, smart home controllers, portable medical devices, and USB-connected peripherals
• Automotive Systems: Body control modules, dashboard displays, sensor hubs, and LIN-based communication nodes
• Audio Applications: Digital audio processors, USB audio interfaces, and I2S-based sound systems

The combination of low power consumption (down to 35µA/MHz in active mode), rich peripheral set, and USB connectivity makes the ATSAMD21G18A-AU particularly well-suited for battery-powered IoT applications requiring both local processing and cloud connectivity.

Development Ecosystem & Support

The ATSAMD21G18A-AU is supported by Microchip's comprehensive development ecosystem including MPLAB® X IDE, Atmel START configurator, and extensive code libraries. The microcontroller is also compatible with the Arduino Zero platform, making it accessible to both professional engineers and maker communities. Comprehensive datasheets, application notes, and reference designs accelerate your time-to-market.

Why Choose HQICKEY for Your Microcontroller Needs?

At HQICKEY, we are your trusted source for 100% authentic electronic components sourced exclusively from authorized distributors. Every ATSAMD21G18A-AU microcontroller comes with:

• Guaranteed Authenticity: Factory-sealed components with full traceability and manufacturer warranty coverage
• Quality Assurance: Rigorous quality control processes ensure you receive genuine, defect-free components
• Competitive Pricing: Direct relationships with authorized distributors enable us to offer market-leading prices
• Fast Global Shipping: Reliable international shipping with tracking to support your production schedules
• Technical Support: Knowledgeable team ready to assist with product selection and technical inquiries
• Long-Term Availability: Strategic inventory management ensures component availability for your product lifecycle

Explore Our Complete Microcontroller Portfolio

Discover our extensive selection of microcontrollers and embedded system controllers for IoT, automotive, and industrial applications. From ultra-low power MSP430 and STM32L series to high-performance ARM Cortex-M4/M7 MCUs, we stock a comprehensive range of solutions from leading manufacturers including Microchip, Texas Instruments, STMicroelectronics, NXP, and Renesas to meet your diverse design requirements.

Whether you're developing battery-powered IoT sensors, industrial control systems, automotive electronics, or consumer devices, our microcontroller portfolio provides the performance, peripherals, and power efficiency your application demands.

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Keep up-to-date with the latest microcontroller technologies, embedded system design techniques, and industry trends by visiting the HQICKEY Blog. Our technical articles, application guides, product comparisons, and industry news help you make informed decisions for your next embedded systems project. Learn about new product releases, design best practices, power optimization techniques, and real-world application examples from our team of experienced engineers.

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