ATSAMC21J18A-MNT

Overview

The ATSAMC21J18A-MNT is a 32-bit microcontroller based on the ARM Cortex-M0+ core, operating at a maximum frequency of 48MHz. It features 256KB of in-system programmable flash memory and 32KB of SRAM. The device includes an analog-to-digital converter with 20 channels (2x12-bit resolution) and a digital-to-analog converter with 10-bit resolution. It supports multiple communication interfaces including CANbus, I2C, LINbus, SPI, and USART/UART. Powered by a voltage range of 2.7V to 5.5V, it offers 52 general-purpose I/Os and operates within a temperature range of -40°C to +105°C. The component is housed in a 64-QFN package.

Feature Summary

• Integrated Functional Safety (FuSa) capabilities for robust industrial applications
• Supports advanced motor control peripherals and Peripheral Touch Control (PTC)
• Features robust communications peripherals including SERCOM modules and CAN FD
• Includes internal oscillator and comprehensive peripheral set such as DMA and WDT

Applications

• Industrial and commercial systems requiring operation in noisy environments
• Motor control applications utilizing advanced peripheral support
• User interface development leveraging Peripheral Touch Control technology
• Automotive electronics meeting AEC-Q100 qualification standards

Procurement Notes

Verify the specific suffix 'MNT' corresponds to the 64-QFN package and industrial temperature grade during procurement. Confirm that the ordering part number matches the required tape and reel or cut tape format. Ensure compatibility with the SAM C21 series development tools if debugging hardware is needed. Check for any recent Product Change Notifications regarding assembly or packaging updates from Microchip Technology before finalizing orders.

Selection Notes

Select this model when a 64-pin form factor is required alongside high pin count availability. Choose over smaller packages like QFN-32 or TQFP-64 if 52 I/Os and extensive ADC channels are necessary. Consider this variant for designs needing AEC-Q100 automotive qualification combined with functional safety features. Evaluate against other SAM C21 members if different memory sizes or package types better fit board space constraints.

Part Context

This component belongs to the Microchip SAM C21 family, which utilizes the ARM Cortex-M0+ processor architecture. The family is designed for 5V applications in industrial and commercial sectors. It emphasizes robustness through integrated communication peripherals and touch sensing capabilities. The ATSAMC21J18A-MNT specifically provides a balance of memory capacity and I/O density in a compact surface-mount package suitable for dense PCB layouts.

Replacement Considerations

ATSAMC21J18A-AUT: Same core and memory but in a 64-TQFP package with 85°C temperature rating. ATSAMC21G18A-MUT: Similar specifications but in a 48-QFN package with fewer I/Os. ATSAMC21E18A-MNT: Different package (32-VQFN) with reduced I/O count.