ATSAMC21G18A-MUT64

Overview

The ATSAMC21G18A-MUT64 is an automotive-grade microcontroller from the Microchip SAM C21 series, featuring an ARM Cortex-M0+ core. It integrates 256 KB of in-system programmable flash memory and 32 KB of SRAM. The device supports a maximum clock frequency of 48 MHz within the -40°C to +85°C operating temperature range. It includes two 12-bit ADCs with 14 channels, a 10-bit DAC, and multiple communication interfaces including I2C, SPI, USART, LIN, and PMBus. The component is housed in a 48-pin QFN package and holds AEC-Q100 qualification.

Feature Summary

• Automotive-grade reliability certified under AEC-Q100 standards for operation in demanding environments
• Integrated functional safety features compliant with ISO 26262 requirements
• High-performance 32-bit ARM Cortex-M0+ processor with single-cycle hardware multiplication
• Comprehensive analog peripherals including dual 12-bit ADCs and a 10-bit DAC

Applications

• Automotive body control modules and lighting systems
• Infotainment system controllers and display drivers
• Sensor interface units requiring high-speed data acquisition
• Industrial motor control applications with automotive component requirements

Procurement Notes

Verify the specific suffix designation against official Microchip documentation to confirm the exact tape-and-reel quantity and packaging configuration. Ensure that the procurement channel provides valid traceability records required for automotive supply chains. Confirm that the delivered components match the specified AEC-Q100 qualification status and temperature range ratings before integration into production designs.

Selection Notes

Select this component when automotive certification is mandatory for a project utilizing the SAM C21 architecture. It is suitable for designs requiring 256 KB of program storage and 32 KB of RAM within a compact 48-pin footprint. Consider this part over non-automotive variants if long-term availability and strict quality standards are critical for the product lifecycle.

Part Context

This microcontroller belongs to the SAM C21 family, which is designed specifically for automotive applications requiring functional safety. It shares the same core architecture as the commercial SAM D21 series but includes enhanced reliability features and certifications. The G18A variant denotes the specific memory configuration of 256 KB flash and 32 KB SRAM within this automotive-focused lineup.

Replacement Considerations

Direct substitutes include other parts within the ATSAMC21GxxA-AUT or ATSAMC21GxxA-MUT families with equivalent memory sizes. Verify pin compatibility and software compatibility when migrating between different memory configurations within the same package type.