EFM32HG322 in Silicon Labs EFR32 / EFM32 Family
The EFM32HG322 family, part of Silicon Labs' Happy Gecko line, is a series of ultra-low-power microcontrollers based on the ARM Cortex-M0+ core. Designed for energy-sensitive applications, these MCUs leverage the Low Energy Sensor Interface (LESENSE) and the Peripheral Reflex System (PRS) to enable autonomous operation while the CPU remains in sleep modes. They are primarily utilized in battery-operated IoT devices, portable medical hardware, and smart metering systems where minimal power consumption and efficient processing are critical design requirements.
Variants in This Sub-Family
The EFM32HG322 sub-family variants primarily differ based on their integrated Flash memory capacity, ranging from 32KB to 64KB, and SRAM allocations. While the core architecture and 48-pin TQFP package remain consistent across most members, some variants are qualified for wider temperature ranges (up to 105C). All family members include the same fundamental peripheral set, ensuring software compatibility across different memory densities within the Happy Gecko portfolio.
