SAM D21 MCU Overview

Last modified by Microchip on 2023/11/10 11:08

A rich set of peripherals, flexibility, and ease of use combined with low power consumption make the Microchip SAM D21 Arm® Cortex®-M0+ based microcontroller series ideal for a wide range of home automation, consumer, metering, and industrial applications. The SAM D21 is designed for simple and intuitive migration between SAM D devices with identical peripheral modules, compatible code, and a linear address map.

Key Features

  • Arm Cortex-M0+ based MCU running up to 48 MHz
  • Up to 256 kB embedded flash and 32 kB SRAM
  • Low power consumption at < 70 µA/MHz
  • DMA and event system
  • Six (SAM D21J and SAM D21G, four in the SAM D21E) flexible serial communication modules (SERCOM)
  • Full-Speed USB Device and embedded Host
  • 12-bit ADC
    • SAM D21J: 20 channels
    • SAM D21G: 14 channels
    • SAM D21E: 10 channels
  • 10-bit DAC
  • Hardware touch support
  • QFP and QFN package options
    • SAM D21J: 64 pins
    • SAM D21G: 48 pins
    • SAM D21E: 32 pins

Block Diagram

Block diagram for ATSAMD21J18

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