EFM32WG Datasheet, PDF (8/834 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
Tip
Throughout this document, the first figure in every module description contains an Energy Mode
Indicator showing which energy mode(s) the module can operate (see Table 3.1 (p. 8) ).
Table 3.1. Energy Mode Description
Energy Mode
Name
Description
0123 4
EM0 – Energy Mode 0 _{In EM0, the CPU is running and consuming as little as 230 µA/MHz, when}
(Run mode)
running code from flash. All peripherals can be active.
0123 4
EM1 – Energy Mode 1 In EM1, the CPU is sleeping and the power consumption is only 67 µA/MHz.
(Sleep Mode)
All peripherals, including DMA, PRS and memory system, are still available.
0123 4
0123 4
EM2 – Energy Mode 2
(Deep Sleep Mode)
In EM2 the high frequency oscillator is turned off, but with the 32.768 kHz
oscillator running, selected low energy peripherals (LCD, RTC, LETIMER,
PCNT, WDOG, LEUART, I²C, ACMP, LESENSE , OPAMP, USB) are still
available. This gives a high degree of autonomous operation with a current
consumption as low as 0.95 µA with RTC enabled. Power-on Reset, Brown-
out Detection and full RAM and CPU retention is also included.
EM3 - Energy Mode 3
(Stop Mode)
In EM3, the low-frequency oscillator is disabled, but there is still full CPU
and RAM retention, as well as Power-on Reset, Pin reset, EM4 wake-up and
Brown-out Detection, with a consumption of only 0.65 µA. The low-power
ACMP, asynchronous external interrupt, PCNT, and I²C can wake-up the
device. Even in this mode, the wake-up time is a few microseconds.
0123 4
EM4 – Energy Mode 4
(Shutoff Mode)
In EM4, the current is down to 20 nA and all chip functionality is turned off
except the pin reset, GPIO pin wake-up, GPIO pin retention, Backup RTC
(including retention RAM) and the Power-On Reset. All pins are put into their
reset state.
3.5 Product Overview
Table 3.2 (p. 8) shows a device overview of the EFM32WG Microcontroller Series, including
peripheral functionality. For more information, the reader is referred to the device specific datasheets.
Table 3.2. EFM32WG Microcontroller Series
230F64
230F128
64 32 56 -
128 32 56 -
-
3
2
2
4
(12)
1
-
3
2
2
4
(12)
1
1
3
1
1
(8)
22
(2) (16)
Y
-
Y
3 QFN64
1
3
1
1
(8)
22
(2) (16)
Y
-
Y
3 QFN64
2013-05-08 - Wonder Gecko Family - d0233_Rev0.50
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