Preliminary
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QFN24 Pin#
and Name
Pin Alternate Functionality / Description
Pin Name
Analog
Timers
Communication
Other
LEU0_RX #4
I2C0_SDA #0
PRS_CH0 #0
GPIO_EM4WU0
1
2
3
PA0
IOVDD_0
PC0
TIM0_CC0 #0/1/4
Digital IO power supply 0.
ACMP0_CH0
TIM0_CC1 #4
PCNT0_S0IN #2
US1_TX #0
I2C0_SDA #4
PRS_CH2 #0
PRS_CH3 #0
TIM0_CC2 #4
PCNT0_S1IN #2
US1_RX #0
I2C0_SCL #4
4
PC1
ACMP0_CH1
5
6
PB7
PB8
LFXTAL_P
LFXTAL_N
TIM1_CC0 #3
TIM1_CC1 #3
US1_CLK #0
US1_CS #0
Reset input, active low.
7
RESETn
To apply an external reset source to this pin, it is required to only drive this pin low during reset, and let the internal pull-up en-
sure that reset is released.
8
PB11
AVDD_2
PB13
TIM1_CC2 #3
9
Analog power supply 2.
10
11
12
HFXTAL_P
HFXTAL_N
LEU0_TX #1
LEU0_RX #1
PB14
AVDD_0
Analog power supply 0.
TIM1_CC0 #4
PCNT0_S0IN #3
US1_RX #2/3
I2C0_SDA #1
13
14
PD6
PD7
ACMP0_O #2
CMU_CLK0 #2
TIM1_CC1 #4
PCNT0_S1IN #3
US1_TX #2/3
I2C0_SCL #1
15
16
VDD_DREG
DECOUPLE
Power supply for on-chip voltage regulator.
Decouple output for on-chip voltage regulator. An external capacitance of size CDECOUPLE is required at this pin.
TIM1_CC1 #0
17
18
PC14
PC15
US1_CS #3
PRS_CH0 #2
PCNT0_S1IN #0
TIM1_CC2 #0
US1_CLK #3
PRS_CH1 #2
US1_CLK #2
LEU0_TX #3
I2C0_SDA #5
DBG_SWCLK #0
BOOT_TX
19
20
PF0
PF1
TIM0_CC0 #5
US1_CS #2
LEU0_RX #3
I2C0_SCL #5
DBG_SWDIO #0
GPIO_EM4WU3
BOOT_RX
TIM0_CC1 #5
TIM0_CC2 #5
21
22
23
PF2
IOVDD_5
PE12
LEU0_TX #4
GPIO_EM4WU4
Digital IO power supply 5.
TIM1_CC2 #1
I2C0_SDA #6
I2C0_SCL #6
CMU_CLK1 #2
ACMP0_O #0
GPIO_EM4WU5
24
PE13
4.2 Alternate Functionality Pinout
A wide selection of alternate functionality is available for multiplexing to various pins. This is shown in
Table 4.2 (p. 36). The table shows the name of the alternate functionality in the first column, followed
by columns showing the possible LOCATION bitfield settings.
Note
Some functionality, such as analog interfaces, do not have alternate settings or a LOCA-
TION bitfield. In these cases, the pinout is shown in the column corresponding to LOCA-
TION 0.
www.silabs.com
2013-10-09 - EFM32ZG108FXX - d0063_Rev0.60
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SILICONIMAGE [ Silicon image ]
