EZR32WG-490MHZ Datasheet, PDF (20/29 Pages) Silicon Laboratories – Advanced Energy Monitoring

EZR32WG 490MHz Wireless Starter Kit
Connectors
9.4 Expansion header
On the right hand side of the board an angled 20 pin expansion header is provided to allow connection of peripherals or plugin boards.
The connecter contains a number of I/O pins that can be used with most of the EZR32 Wonder Gecko's features. Additionally, the
VMCU, 3V3 and 5V power rails are also exported.
Figure shows the pin assignment of the expansion header. With a few exceptions, most of the expansion header pins are the same as
those on other EFM starter kits.
Some of the chip peripheral functions that are available on the Expansion Header are listed in table Table 9.3 Some peripheral func-
tions available on Expansion Header on page 17.
Figure 9.5. Expansion Header
Table 9.3. Some peripheral functions available on Expansion Header
Peripheral
USART/SPI
I²C
Low Energy UART
Analog to Digital Converter
Peripheral pin MCU Pin
USART1_TX PD0
USART1_RX PD1
USART1_CLK PD2
USART1_CS PD3
I2C1_SDA
PC4
I2C1_SCL
PC5
LEUART0_TX PD4
LEUART0_RX PD5
ADC0_CH0 PD0
ADC0_CH1 PD1
ADC0_CH2 PD2
ADC0_CH3 PD3
ADC0_CH4 PD4
ADC0_CH5 PD5
ADC0_CH6 PD6
ADC0_CH7 PD7
EXP Header pin number
4
6
8
10
7
9
12
14
4
6
8
10
12
14
16
17
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