User manual
...the world's most energy friendly microcontrollers
2012-04-24 - Giant Gecko Family - d0053_Rev0.96 8
www.energymicro.com
Table 3.1. Energy Mode Description
Energy Mode Name Description
0
1 2 3 4
EM0 – Energy Mode 0
(Run 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.
0
1 2 3 4
EM1 – Energy Mode 1
(Sleep Mode)
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.
0
1 2 3 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, I
2
C, ACMP, LESENSE , OPAMP, USB) are still
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.
0
1 2 3 4
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 wakeup
and Brown-out Detector, with a consumption of only 0.9 µA. The low-power
ACMP, asynchronous external interrupt, PCNT, and I
2
C can wake-up
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
EFM32GG Part
#
Flash
RAM
GPIO(pins)
USB
LCD
USART+UART
LEUART
I
2
C
Timer(PWM)
LETIMER
RTC
PCNT
Watchdog
ADC(pins)
DAC(pins)
ACMP(pins)
AES
EBI
LESENSE
Op-Amps
Package
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