...the world's most energy friendly microcontrollers
Table 3.1. Energy Mode Description
Energy Mode
Name
Description
0 1 2 3
0 1 2 3
4
4
EM0 – Energy Mode 0
(Run mode)
EM1 – Energy Mode 1
(Sleep Mode)
In EM0, the CPU is running and consuming as little as 200 μA/MHz, when
running code from flash. All peripherals can also be activated.
In EM1, the CPU is sleeping and the power consumption is only 50 μA/MHz .
The peripherals including, DMA, PRS and memory system is still available.
In EM2 the high frequency oscillator is turned off, but with the 32.768 kHz
PCNT, WDOG, LEUART, I C, ACMP, LESENSE , OPAMP, USB) are still
0   1   2   3
4
EM2 – Energy Mode 2
(Deep Sleep Mode)
oscillator running, selected low energy peripherals (LCD, RTC, LETIMER,
2
available, giving a high degree of autonomous operation with a current
consumption as low as 1.2 μA with RTC enabled. Power-on Reset, Brown-out
Detection and full RAM and CPU retention is also included.
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 wakeup
ACMP, asynchronous external interrupt, PCNT, and I C can wake-up
0   1   2   3
4
EM3 - Energy Mode 3
(Stop Mode)
and Brown-out Detector, with a consumption of only 0.9 μA. The low-power
2
the device. Even in this mode, the wake-up time is in the range of a few
microseconds.
0 1 2 3
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 retenetion , 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 EFM32GG Microcontroller Series, including
peripheral functionality. For more information, the reader is referred to the device specific datasheets.
Table 3.2. EFM32GG Microcontroller Series
230F512
512
128
56
-
-
3
2
2
4
(12)
1
1
3
1
1
(8)
2
(2)
2
(16)
Y
-
3
Y
QFN64
230F1024
1024 128
56
-
-
3
2
2
4
(12)
1
1
3
1
1
(8)
2
(2)
2
(16)
Y
-
3
Y
QFN64
232F512
512
128
53
-
-
3
2
2
4
(11)
1
1
3
1
1
(8)
2
(2)
2
(16)
Y
-
3
Y
TQFP64
232F1024
1024 128
53
-
-
3
2
2
4
(11)
1
1
3
1
1
(8)
2
(2)
2
(16)
Y
-
3
Y
TQFP64
2012-04-24 - Giant Gecko Family - d0053_Rev0.96
8
www.energymicro.com
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