EFM32ZG108 Datasheet, PDF (39/54 Pages) Silicon image – Energy, gas, water and smart metering

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Table 4.2. Alternate functionality overview
Alternate
Functionality 0
ACMP0_CH0
PC0
ACMP0_CH1
PC1
ACMP0_O
PE13
BOOT_RX
PF1
BOOT_TX
PF0
CMU_CLK0
CMU_CLK1
LOCATION
1
2
3
4
PD6
PD7
PE12
DBG_SWCLK
PF0
DBG_SWDIO
PF1
GPIO_EM4WU0
GPIO_EM4WU3
GPIO_EM4WU4
GPIO_EM4WU5
PA0
PF1
PF2
PE13
HFXTAL_N
PB14
HFXTAL_P
I2C0_SCL
I2C0_SDA
LEU0_RX
PB13
PA0
LEU0_TX
PD7
PD6
PB14
PB13
PC1
PC0
PF1
PA0
PF0
PF2
LFXTAL_N
LFXTAL_P
PCNT0_S0IN
PCNT0_S1IN
PRS_CH0
PRS_CH1
PRS_CH2
PRS_CH3
TIM0_CC0
TIM0_CC1
TIM0_CC2
TIM1_CC0
TIM1_CC1
TIM1_CC2
US1_CLK
US1_CS
US1_RX
PB8
PB7
PC0 PD6
PC14
PC1 PD7
PA0
PC14
PC15
PC0
PC1
PA0
PA0
PA0
PC0
PC1
PB7
PD6
PC14
PB8
PD7
PC15 PE12
PB11
PB7
PF0 PC15
PB8
PF1 PC14
PC1
PD6 PD6
5
6
PF1 PE13
PF0 PE12
PF0
PF1
PF2
Description
Analog comparator ACMP0, channel 0.
Analog comparator ACMP0, channel 1.
Analog comparator ACMP0, digital output.
Bootloader RX.
Bootloader TX.
Clock Management Unit, clock output number 0.
Clock Management Unit, clock output number 1.
Debug-interface Serial Wire clock input.
Note that this function is enabled to pin out of reset, and has
a built-in pull down.
Debug-interface Serial Wire data input / output.
Note that this function is enabled to pin out of reset, and has
a built-in pull up.
Pin can be used to wake the system up from EM4
Pin can be used to wake the system up from EM4
Pin can be used to wake the system up from EM4
Pin can be used to wake the system up from EM4
High Frequency Crystal negative pin. Also used as external
optional clock input pin.
High Frequency Crystal positive pin.
I2C0 Serial Clock Line input / output.
I2C0 Serial Data input / output.
LEUART0 Receive input.
LEUART0 Transmit output. Also used as receive input in half
duplex communication.
Low Frequency Crystal (typically 32.768 kHz) negative pin.
Also used as an optional external clock input pin.
Low Frequency Crystal (typically 32.768 kHz) positive pin.
Pulse Counter PCNT0 input number 0.
Pulse Counter PCNT0 input number 1.
Peripheral Reflex System PRS, channel 0.
Peripheral Reflex System PRS, channel 1.
Peripheral Reflex System PRS, channel 2.
Peripheral Reflex System PRS, channel 3.
Timer 0 Capture Compare input / output channel 0.
Timer 0 Capture Compare input / output channel 1.
Timer 0 Capture Compare input / output channel 2.
Timer 1 Capture Compare input / output channel 0.
Timer 1 Capture Compare input / output channel 1.
Timer 1 Capture Compare input / output channel 2.
USART1 clock input / output.
USART1 chip select input / output.
USART1 Asynchronous Receive.
2015-03-06 - EFM32ZG108FXX - d0063_Rev1.10
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