EFM32WG942 Datasheet, PDF (58/78 Pages) Silicon Laboratories – Operation from backup battery when main power drains out

QFP64 Pin#
and Name
...the world's most energy friendly microcontrollers
Pin Alternate Functionality / Description
Pin Name
Analog
Timers
Communication
Other
62
PE13
63
PE14
64
PE15
LCD_SEG9
LCD_SEG10
LCD_SEG11
TIM3_CC0 #0
TIM3_CC1 #0
US0_CLK #0
I2C0_SDA #6
US0_TX #3
US0_CS #0
I2C0_SCL #6
LEU0_TX #2
LEU0_RX #2
LES_ALTEX6 #0
LES_ALTEX7 #0
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. 58) . 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.
Table 4.2. Alternate functionality overview
Alternate
Functionality
0
ACMP0_CH4
PC4
ACMP0_CH5
PC5
ACMP0_CH6
PC6
ACMP0_CH7
PC7
ACMP0_O
PE13
ACMP1_O
PF2
ADC0_CH0
PD0
ADC0_CH1
PD1
ADC0_CH2
PD2
ADC0_CH3
PD3
ADC0_CH4
PD4
ADC0_CH5
PD5
ADC0_CH6
PD6
ADC0_CH7
PD7
BOOT_RX
PE11
BOOT_TX
PE10
BU_VIN
PD8
CMU_CLK0
PA2
CMU_CLK1
PA1
DAC0_N0 /
OPAMP_N0
PC5
DAC0_N1 /
PD7
LOCATION
1
2
3
4
PD6
PD7
PD7
PD8
PE12
5
6
Description
Analog comparator ACMP0, channel 4.
Analog comparator ACMP0, channel 5.
Analog comparator ACMP0, channel 6.
Analog comparator ACMP0, channel 7.
Analog comparator ACMP0, digital output.
Analog comparator ACMP1, digital output.
Analog to digital converter ADC0, input channel number 0.
Analog to digital converter ADC0, input channel number 1.
Analog to digital converter ADC0, input channel number 2.
Analog to digital converter ADC0, input channel number 3.
Analog to digital converter ADC0, input channel number 4.
Analog to digital converter ADC0, input channel number 5.
Analog to digital converter ADC0, input channel number 6.
Analog to digital converter ADC0, input channel number 7.
Bootloader RX
Bootloader TX
Battery input for Backup Power Domain
Clock Management Unit, clock output number 0.
Clock Management Unit, clock output number 1.
Operational Amplifier 0 external negative input.
Operational Amplifier 1 external negative input.
2014-06-13 - EFM32WG942FXX - d0201_Rev1.40
58
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