Microchip ATSAMD21G17D-AZT: A Comprehensive Technical Overview

The Microchip ATSAMD21G17D-AZT represents a powerful and highly integrated 32-bit microcontroller unit (MCU) from the SAM D21 family, built on the high-performance ARM® Cortex®-M0+ processor core. This device is engineered for a wide array of embedded applications, ranging from IoT nodes and consumer electronics to industrial control systems, where a blend of processing power, energy efficiency, and rich peripheral integration is paramount.

At the heart of this MCU lies the Cortex-M0+ CPU, running at speeds up to 48MHz. This core provides an excellent balance between computational performance and low power consumption, making it ideal for both battery-powered and line-operated devices. The MCU is equipped with 128KB of Flash memory and 16KB of SRAM, offering ample space for complex application code and data handling.

A standout feature of the ATSAMD21G17D-AZT is its exceptionally rich set of peripherals. It includes a full-speed USB 2.0 interface with embedded host and device functionality, enabling easy connection to PCs or other USB peripherals. For analog capabilities, it integrates a 12-channel, 12-bit ADC with up to 350ksps sampling rate, a 10-bit DAC, and analog comparators. For control and communication, it boasts multiple Serial Communication Modules (SERCOM) that can be individually configured as UART, SPI, or I2C interfaces, providing unparalleled flexibility in system design. Additionally, it features a real-time counter (RTC) and calendar, a 32-bit timer/counter (TC) and a 16-bit timer/counter for control (TCC) with support for PWM output, making it suitable for motor control and LED dimming applications.

The device operates over a wide voltage range (1.62V to 3.63V) and includes advanced power-saving modes, such as Standby with RTC (consuming less than 1µA), which are critical for extending battery life. The "-AZT" suffix denotes a 48-pin QFN package, which is compact and suitable for space-constrained PCB designs.

ICGOODFIND: The Microchip ATSAMD21G17D-AZT is a versatile and robust MCU that stands out for its powerful Cortex-M0+ core, low-power architecture, and exceptional peripheral flexibility. Its integrated USB and configurable SERCOM ports make it a superior choice for developers designing connected, feature-rich applications that require efficient processing and connectivity in a compact form factor.

Keywords: ARM Cortex-M0+, Low-Power, USB 2.0, SERCOM, 12-bit ADC.