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EFM32
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<p>EFM32 Gecko MCUs are a family of <a href="/facts/Mixed-signal_integrated_circuit/cDkjcck8">mixed-signal</a> 32-bit <a href="/facts/Microcontroller/MKrnAhnm">microcontroller</a> <a href="/facts/Integrated_circuits/fjn6vg7C">integrated circuits</a> from <a href="/facts/Energy_Micro/LrI5Qbk5">Energy Micro</a> (now <a href="/facts/Silicon_Labs/su2Sa5FN">Silicon Labs</a>) based on <a href="/facts/ARM_Cortex-M/prW99nkV">ARM Cortex-M</a> CPUs, including the <a href="/facts/Cortex-M0%252B/prW99nkV">Cortex-M0+</a>, <a href="/facts/Cortex-M3/prW99nkV">Cortex-M3</a>, and <a href="/facts/Cortex-M4/prW99nkV">Cortex-M4</a>. </p>