EFM32GG230 Datasheet, PDF (7/70 Pages) List of Unclassifed Manufacturers – High Performance 32-bit processor up to 48 MHz

...the world's most energy friendly microcontrollers
and key registers. All write accesses to the AES module must be 32-bit operations, i.e. 8- or 16-bit
operations are not supported.
2.1.27 General Purpose Input/Output (GPIO)
In the EFM32GG230, there are 56 General Purpose Input/Output (GPIO) pins, which are divided into
ports with up to 16 pins each. These pins can individually be configured as either an output or input. More
advanced configurations like open-drain, filtering and drive strength can also be configured individually
for the pins. The GPIO pins can also be overridden by peripheral pin connections, like Timer PWM
outputs or USART communication, which can be routed to several locations on the device. The GPIO
supports up to 16 asynchronous external pin interrupts, which enables interrupts from any pin on the
device. Also, the input value of a pin can be routed through the Peripheral Reflex System to other
peripherals.
2.2 Configuration Summary
The features of the EFM32GG230 is a subset of the feature set described in the EFM32GG Reference
Manual. Table 2.1 (p. 7) describes device specific implementation of the features.
Table 2.1. Configuration Summary
Module
Cortex-M3
DBG
MSC
DMA
RMU
EMU
CMU
WDOG
PRS
I2C0
I2C1
USART0
USART1
USART2
LEUART0
LEUART1
TIMER0
TIMER1
TIMER2
TIMER3
RTC
BURTC
LETIMER0
Configuration
Full configuration
Full configuration
Full configuration
Full configuration
Full configuration
Full configuration
Full configuration
Full configuration
Full configuration
Full configuration
Full configuration
Full configuration with IrDA
Full configuration with I2S
Full configuration with I2S
Full configuration
Full configuration
Full configuration with DTI
Full configuration
Full configuration
Full configuration
Full configuration
Full configuration
Full configuration
Pin Connections
NA
DBG_SWCLK, DBG_SWDIO,
DBG_SWO
NA
NA
NA
NA
CMU_OUT0, CMU_OUT1
NA
NA
I2C0_SDA, I2C0_SCL
I2C1_SDA, I2C1_SCL
US0_TX, US0_RX. US0_CLK, US0_CS
US1_TX, US1_RX, US1_CLK, US1_CS
US2_TX, US2_RX, US2_CLK, US2_CS
LEU0_TX, LEU0_RX
LEU1_TX, LEU1_RX
TIM0_CC[2:0], TIM0_CDTI[2:0]
TIM1_CC[2:0]
TIM2_CC[2:0]
TIM3_CC[2:0]
NA
NA
LET0_O[1:0]
2014-05-23 - EFM32GG230FXX - d0035_Rev1.30
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