EFM32WG Datasheet, PDF (156/834 Pages) List of Unclassifed Manufacturers – The EFM32WG Wonder Gecko is the ideal choice for demanding 8-, 16-, and 32-bit energy sensitive applications.

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Bit
15:0
Name
Reset
Access Description
LOCKKEY
0x0000
RW
Configuration Lock Key
Write any other value than the unlock code to lock CMU_CTRL, CMU_HFCORECLKDIV,
CMU_HFPERCLKDIV, CMU_HFRCOCTRL, CMU_LFRCOCTRL, CMU_AUXHFRCOCTRL, CMU_OSCENCMD, CMU_CMD,
CMU_LFCLKSEL, CMU_HFCORECLKEN0, CMU_HFPERCLKEN0, CMU_LFACLKEN0, CMU_LFBCLKEN0, CMU_LFAPRESC0,
CMU_LFBPRESC0, and CMU_PCNTCTRL from editing. Write the unlock code to unlock. When reading the register, bit 0 is set
when the lock is enabled.
Mode
Read Operation
UNLOCKED
LOCKED
Write Operation
LOCK
UNLOCK
Value
0
1
0
0x580E
Description
CMU registers are unlocked.
CMU registers are locked.
Lock CMU registers.
Unlock CMU registers.
2013-05-08 - Wonder Gecko Family - d0233_Rev0.50
156
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