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Last updated: 31 Mar 2019
Silicon Labs' EFM32™ Happy Gecko ARM® Cortex®-M0+ based 32-bit microcontrollers (MCUs) provide flash memory configurations up to 64 kB, 4-8 kB of RAM and CPU speeds up to 24 MHz, …
The EFM32 Happy Gecko contains a Cortex M0+, not a Cortex M3
Topic last updated 04 May 2016, by 
Seppe Stas.
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Seppe Stas.
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This page displays incorrect information under Happy Gecko Platform Features. The EFM32HG322F64 Happy Gecko MCU contains an ARM® Cortex™ M0+ core, not a Cortex M3.