EFM32WG Datasheet, PDF (108/834 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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Table 10.1. EMU Energy Mode Overview
EM0¹
EM1²
EM2²
Wakeup time to EM0
-
-
2 µs
MCU clock tree
On
-
-
High frequency peripheral clock trees
On
On
-
Core voltage regulator
On
On
-
High frequency oscillator
I²C full functionality
On
On
-
On
On
-
Low frequency peripheral clock trees
On
On
On
Low frequency oscillator
On
On
On
Real Time Counter
On
On
On
LCD
On
On
On
LEUART
On
On
On
LETIMER
On
On
On
LESENSE
On
On
On
PCNT
On
On
On
ACMP
I²C receive address recognition
On
On
On
On
On
On
Watchdog
On
On
On
Pin interrupts
On
On
On
RAM voltage regulator/RAM retention
On
On
On
Brown Out Reset
On
On
On
Power On Reset
On
On
On
Pin Reset
On
On
On
GPIO state retention
On
On
On
EM4 Reset Wakeup Request
-
-
-
Backup RTC
On
On
On
Backup retention registers
On
1_{Energy Mode 0/Active Mode}
2_{Energy Mode 1/2/3/4}
3_{When the 1 kHz ULFRCO is selected}
4_{Not available in Backup mode}
On
On
The different Energy Modes are summarized in the following sections.
EM3²
2 µs
-
-
-
-
-
-
-
On³
-
-
On³
On³
On
On
On
On³
On
On
On
On
On
On
-
On
On
EM4²
160 µs
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
On
On
On⁴
On⁴
On
On
10.3.1.1 EM0
• The high frequency oscillator is active
• High frequency clock trees are active
• All peripheral functionality is available
10.3.1.2 EM1
• The high frequency oscillator is active
2013-05-08 - Wonder Gecko Family - d0233_Rev0.50
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