ARM Microcontrollers – MCU 256KB 32KB 48TQFP GRN1.6-3.6V48MHz

ATSAMD21G18A-AU – 32-bit ARM Cortex-M0+ Microcontroller – Microchip Technology

Elevate your embedded designs with the ATSAMD21G18A-AU microcontroller from Microchip Technology. This high-performance IC delivers exceptional processing efficiency and rich connectivity in a compact footprint, ideal for IoT, industrial automation, and consumer electronics. PCX ensures genuine Microchip components with rapid shipping and dedicated technical support.

Key Features

• Core: 32-bit ARM® Cortex®-M0+ at 48MHz
• Memory: 256KB FLASH + 32KB SRAM
• Voltage Range: 1.62V to 3.6V (ultra-low power operation)
• I/O Pins: 38 programmable GPIOs
• Connectivity: USB, UART/USART, SPI, I2C, LINbus
• Operating Temp: -40°C to +85°C (industrial grade)

Technical Specifications

Part of the SAM D21G Functional Safety (FuSa) series, this surface-mount IC integrates advanced peripherals including DMA, PWM, 14-channel 12-bit ADC, and 10-bit DAC. Housed in a 48-TQFP package (7x7mm), it features brown-out reset, power-on reset (POR), and watchdog timer (WDT) for robust operation. The internal oscillator minimizes external components.

Typical Applications

• IoT edge devices and sensor hubs
• Industrial control systems and automation
• Consumer electronics and wearables
• Medical monitoring equipment
• Building automation controllers

About Microchip Technology

Microchip Technology is a global leader in microcontroller and analog semiconductor solutions, renowned for innovation in embedded control systems. With over three decades of industry expertise, their products set benchmarks for power efficiency, reliability, and integration across automotive, industrial, and consumer markets.

The company maintains rigorous quality certifications (including IATF 16949) and provides comprehensive development tools, ensuring seamless design integration. Microchip’s commitment to long-term product lifecycle support makes them a trusted partner for mission-critical applications worldwide.

About Microcontrollers

Microcontrollers (MCUs) are integrated circuits that serve as the computational “brain” in embedded systems, combining processors, memory, and programmable I/O on a single chip. They execute dedicated tasks with minimal power consumption, enabling smart functionality in devices from household appliances to industrial machinery.

Modern MCUs like the ATSAMD21 series balance processing power with energy efficiency, supporting complex operations such as real-time data processing, connectivity protocols, and hardware-level security. Their versatility makes them indispensable in evolving tech landscapes like Industry 4.0 and IoT ecosystems.

Packaging Options

Standard packaging is Tray. Contact PCX for Tape & Reel or custom packaging requirements.

Frequently Asked Questions

Question: What development tools support this microcontroller?

Answer: Microchip provides MPLAB® X IDE and Atmel START code configurator. Third-party toolchains like Arm Keil MDK are also compatible.

Question: Is the USB interface host/device capable?

Answer: Yes, it supports full-speed USB 2.0 with host and device modes.

Question: Can it operate in battery-powered devices?

Answer: Absolutely. Its 1.62V–3.6V range and sleep modes optimize battery life.

Question: Does PCX provide datasheets?

Answer: Yes! Access the ATSAMD21G18A-AU datasheet on our resources page.

Question: What functional safety features are included?

Answer: FuSa features include memory protection units (MPU), CRC generator, and fail-safe clock monitoring.

Question: Is this MCU suitable for motor control?

Answer: Yes, its PWM peripherals and DMA support brushless DC (BLDC) and stepper motor applications.

Disclaimer: Product images are representational. Refer to datasheets for exact specifications.

Ready to Integrate?

Streamline your supply chain with PCX – your trusted source for authentic Microchip components. Order the ATSAMD21G18A-AU today for same-day shipping and expert support!