SAML21G in SAM Microcontrollers Family

The SAML21G sub-family by Microchip Technology consists of ultra-low-power 32-bit microcontrollers built on the ARM Cortex-M0+ architecture. Designed specifically to extend battery life in portable electronics, these devices achieve power consumption as low as 32 uA/MHz in active mode and less than 0.9 uA in deep sleep. They integrate advanced power management features, including a battery backup power switch and an Event System for CPU-independent peripheral communication, making them ideal for energy-constrained IoT and industrial sensing applications.

Variants in This Sub-Family

The SAML21G variants are primarily differentiated by their on-chip memory densities and package configurations. Memory options range from 32KB to 256KB of Flash and 4KB to 32KB of SRAM. While the 'G' designation signifies the 48-pin count (typically QFN or TQFP), internal peripheral counts for timers and serial communication interfaces (SERCOM) may vary slightly. Some specific part numbers also include B-revision enhancements for functional safety and improved analog performance.

Other SAM Microcontrollers Sub-families

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