ATSAMC21E17A-MNT

Overview

The ATSAMC21E17A-MNT is a 32-bit microcontroller based on the ARM Cortex-M0+ core, belonging to the SAM C21 series with Functional Safety (FuSa) certification. It features 128KB of in-system programmable Flash memory and 16KB of SRAM. The device operates at a maximum clock frequency of 48MHz and supports a supply voltage range of 2.7V to 5.5V. It includes ten 12-bit ADC channels and one 10-bit DAC. Connectivity options include CANbus, I2C, LINbus, SPI, and UART/USART interfaces. The component is housed in a 32-VQFN package with dimensions of 5x5mm and is rated for an operating temperature range of -40°C to 105°C.

Feature Summary

• Functional Safety (FuSa) certified design compliant with ISO 26262 standards for automotive applications
• Integrated analog peripherals including multiple high-resolution ADCs and a DAC for signal processing
• Comprehensive communication interface suite supporting CANbus, LINbus, I2C, SPI, and USART protocols

Applications

• Automotive body electronics and control modules requiring functional safety compliance
• Industrial control systems utilizing CANbus or LINbus communication
• Battery management systems and sensor interfaces in electric vehicles
• General-purpose embedded controllers in harsh environmental conditions

Procurement Notes

Verify the specific suffix 'MNT' corresponds to the 32-VQFN(5x5) package and the -40°C to 105°C temperature grade. Confirm that the FuSa qualification status is required for your application, as this distinguishes it from standard SAM C21 variants. Ensure compatibility with development tools supporting the Cortex-M0+ architecture and check for any specific errata related to silicon revisions before finalizing procurement.

Selection Notes

Select this component when functional safety certification is mandatory for automotive or industrial use cases. It is suitable for designs requiring moderate code storage with 128KB Flash and sufficient RAM for real-time processing. Choose this part over non-FuSa variants if ISO 26262 compliance is a project requirement. Consider the 32-pin VQFN package constraints for PCB layout and thermal management in compact enclosures.

Part Context

This microcontroller is part of the Microchip SAM C21 family, which targets automotive and industrial markets. The E-series designation typically indicates enhanced peripheral sets or specific package configurations within the broader SAM C21 ecosystem. It shares architectural similarities with other Cortex-M0+ devices but adds rigorous safety mechanisms and diagnostic coverage necessary for ASIL-B compliant applications.

Replacement Considerations

ATSAMC21E18A-MNT offers increased Flash capacity while maintaining the same package and safety features. ATSAMC21G17A-MNT provides similar specifications but lacks the explicit FuSa certification and uses a different pin count. Standard SAM C21 variants without the 'E' prefix may lack the required safety diagnostics.