SAM C21 MCU Overview

Last modified by Microchip on 2023/11/09 09:01


A rich set of peripherals, flexibility, and ease-of-use combined with 2.7V – 5.5V operating voltage make the Microchip SAM C21 Arm® Cortex®-M0+ based microcontroller series ideal for a wide range of consumer and industrial applications. SAM C21 devices are designed for simple and intuitive migration between SAM C 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
  • 2.7 V to 5.5 V operating voltage
  • Controller Area Network (CAN) interface
  • DMA and Event system
  • Six (SAM C21J and SAM C21G, four in the SAM C21E) flexible serial communication modules (SERCOM)
  • 12-bit ADC (SAM C21J: 20 channels; SAM C21G: 14 channels; SAM C21E: 10 channels)
  • 16-bit SDADC (SAM C21J: three channels; SAM C21G: two channels; SAM C21E: one channel)
  • Temperature sensor
  • Divide and square root accelerator (DIVAS)
  • Hardware touch support
  • QFP and QFN package options (SAM C21J: 64 pins; SAM C21G: 48 pins; SAM C21E: 32 pins)

Block Diagram


SAM C21/C20 block diagram