EFM32WG Datasheet, PDF (24/834 Pages) List of Unclassifed Manufacturers – The EFM32WG Wonder Gecko is the ideal choice for demanding 8-, 16-, and 32-bit energy sensitive applications.

...the world's most energy friendly microcontrollers
Note
The FREEZE register is also present on peripherals with immediate synchronization, but
has no effect.
5.4 Flash
The Flash retains data in any state and typically stores the application code, special user data and
security information. The Flash memory is typically programmed through the debug interface, but can
also be erased and written to from software.
• Up to 256 kB of memory
• Page size of 2048 bytes (minimum erase unit)
• Minimum 20 000 erase cycles
• More than 10 years data retention at 85°C
• Lock-bits for memory protection
• Data retention in any state
5.5 SRAM
The primary task of the SRAM memory is to store application data. Additionally, it is possible to execute
instructions from SRAM, and the DMA may used to transfer data between the SRAM, Flash and
peripherals.
• Up to 32 kB memory
• Bit-band access support
• Data retention of the entire memory in EM0 to EM3
5.6 Device Information (DI) Page
The DI page contains calibration values, a unique identification number and other useful data. See the
table below for a complete overview.
Table 5.4. Device Information Page Contents
DI Address
0x0FE08020
0x0FE08028
0x0FE08030
0x0FE08040
0x0FE08048
0x0FE08050
0x0FE08058
0x0FE08060
0x0FE08068
0x0FE08078
0x0FE080A0
0x0FE080A8
0x0FE081B0
0x0FE081B2
Register
CMU_LFRCOCTRL
CMU_HFRCOCTRL
CMU_AUXHFRCOCTRL
ADC0_CAL
ADC0_BIASPROG
DAC0_CAL
DAC0_BIASPROG
ACMP0_CTRL
ACMP1_CTRL
CMU_LCDCTRL
DAC0_OPACTRL
DAC0_OPAOFFSET
DI_CRC
CAL_TEMP_0
Description
Register reset value.
Register reset value.
Register reset value.
Register reset value.
Register reset value.
Register reset value.
Register reset value.
Register reset value.
Register reset value.
Register reset value.
Register reset value.
Register reset value.
[15:0]: DI data CRC-16.
[7:0] Calibration temperature (°C).
2013-05-08 - Wonder Gecko Family - d0233_Rev0.50
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