SAM D21G18A 32-bit ARM Cortex-M0+ MCU from China
Microchip SAM D21G18A is a low-power 32-bit ARM Cortex-M0+ microcontroller with 256KB Flash, event system, and multiple low-power modes for battery-powered IoT sensors. HTS 8542.31.00.25 classification based on 32-bit controller architecture.
Duty Rate — China → United States
50%
Rate breakdown
9903.91.0550%Effective with respect to entries on or after January 1, 2025, articles the product of China, as provided for in subdivision (f) of U.S. note 31 to this subchapter
9903.05.860%Articles provided for in subdivision (b) of U.S. note 52 to this subchapter
Import Tips
• Low-power MCUs popular for wearables; ensure battery safety compliance
• Cortex-M0+ bit width confirmed 32-bit despite minimal instruction set
• SERDES interfaces may affect classification if high-speed serial primary