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ATSAMC21N18A-ANT

MCHPATSAMC21N18A-ANT

Microchip Technology
ARM® Cortex®-M0+ SAM C21, Functional Safety (FuSa) Microcontroller IC 32-Bit 48MHz 256KB (256K x 8) FLASH 100-TQFP (14x14)
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Overview

The ATSAMC21N18A-ANT is a 32-bit ARM Cortex-M0+ microcontroller designed for high-reliability applications, featuring a 48MHz clock speed and 256KB of flash memory. It is specifically engineered for 5V operation, making it ideal for industrial and automotive environments where noise immunity is critical. This MCU includes specialized hardware for Functional Safety (FuSa) and dual CAN-FD interfaces for robust networking.

Why Choose This Part

This MCU excels in 5V environments, providing significantly better signal-to-noise ratios than standard 3.3V microcontrollers. It integrates a rich set of communication peripherals including 84 I/O pins and dual CAN-FD, along with hardware-level safety features for mission-critical reliability. The 256KB flash and 32KB RAM provide ample space for complex industrial protocols and control logic.

Applications

Automotive Body Control
Utilizing the dual CAN-FD interfaces and 5V operation for lighting, wipers, and window control in vehicles.
Industrial Motor Control
Leveraging the 48MHz Cortex-M0+ and integrated peripherals for reliable brushless DC or stepper motor commutation.
Functional Safety Systems
Implementing IEC 61508 or ISO 26222 safety-critical monitoring using built-in hardware safety features.
Appliance Control
Managing complex user interfaces and sensor arrays in white goods requiring 5V logic and high noise immunity.

Key Specifications

Speed 48MHz
RAM Size 32K x 8
Core Size 32-Bit
Peripherals Brown-out Detect/Reset, DMA, POR, WDT
Connectivity CANbus, I2C, LINbus, SPI, UART/USART
Mounting Type Surface Mount
Number of I/O 84
Core Processor ARM Cortex-M0+
Package / Case 100-TQFP
Data Converters A/D 20x12b, 3x16b; D/A 1x10b
Oscillator Type Internal
Program Memory Size 256KB (256K x 8)
Program Memory Type FLASH
Operating Temperature -40degC ~ 105degC (TA)
Supplier Device Package 100-TQFP (14x14)
Voltage - Supply (Vcc/Vdd) 2.7V ~ 5.5V

Getting Started

Begin development using the SAM C21 Xplained Pro evaluation kit (ATSAMC21-XPRO) and the Microchip Studio or MPLAB X IDE. Utilize the Atmel Start web tool to configure the dual CAN-FD stacks and peripheral drivers quickly. For safety-critical designs, refer to Microchip's Functional Safety documentation and diagnostic libraries.

ATSAMC21N Family

Part NumberDifferenceStock
ATSAMC21N-XPRO XPRO 36

Also Consider

ATSAMC21J18A-AUT MCHPMicrochip Technology - A smaller 64-pin TQFP version for designs that require the same 5V SAM C21 core but fewer I/O pins.

Categories

Microcontrollers