EFM32ZG108 Datasheet, PDF (35/51 Pages) Silicon image – Energy, gas, water and smart metering

QFN24 Pin#
and Name
Preliminary
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Pin Alternate Functionality / Description
Pin Name
Analog
Timers
Communication
Other
1
PA0
TIM0_CC0 #0/1/4
LEU0_RX #4
I2C0_SDA #0
PRS_CH0 #0
GPIO_EM4WU0
2
IOVDD_0
Digital IO power supply 0.
3
PC0
ACMP0_CH0
TIM0_CC1 #4
PCNT0_S0IN #2
US1_TX #0
I2C0_SDA #4
PRS_CH2 #0
4
PC1
ACMP0_CH1
TIM0_CC2 #4
PCNT0_S1IN #2
US1_RX #0
I2C0_SCL #4
PRS_CH3 #0
5
PB7
LFXTAL_P
TIM1_CC0 #3
US1_CLK #0
6
PB8
LFXTAL_N
TIM1_CC1 #3
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
TIM1_CC2 #3
9
AVDD_2
Analog power supply 2.
10
PB13
HFXTAL_P
LEU0_TX #1
11
PB14
HFXTAL_N
LEU0_RX #1
12
AVDD_0
Analog power supply 0.
13
PD6
TIM1_CC0 #4
PCNT0_S0IN #3
US1_RX #2/3
I2C0_SDA #1
ACMP0_O #2
14
PD7
TIM1_CC1 #4
PCNT0_S1IN #3
US1_TX #2/3
I2C0_SCL #1
CMU_CLK0 #2
15
VDD_DREG
Power supply for on-chip voltage regulator.
16
DECOUPLE
Decouple output for on-chip voltage regulator. An external capacitance of size C_DECOUPLE is required at this pin.
17
PC14
TIM1_CC1 #0
PCNT0_S1IN #0
US1_CS #3
PRS_CH0 #2
18
PC15
TIM1_CC2 #0
US1_CLK #3
PRS_CH1 #2
19
PF0
TIM0_CC0 #5
US1_CLK #2
LEU0_TX #3
I2C0_SDA #5
DBG_SWCLK #0
BOOT_TX
20
PF1
TIM0_CC1 #5
US1_CS #2
LEU0_RX #3
I2C0_SCL #5
DBG_SWDIO #0
GPIO_EM4WU3
BOOT_RX
21
PF2
TIM0_CC2 #5
LEU0_TX #4
GPIO_EM4WU4
22
IOVDD_5
Digital IO power supply 5.
23
PE12
TIM1_CC2 #1
I2C0_SDA #6
CMU_CLK1 #2
24
PE13
I2C0_SCL #6
ACMP0_O #0
GPIO_EM4WU5
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.
2013-10-09 - EFM32ZG108FXX - d0063_Rev0.60
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