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2013-06-28 - EFM32G230FXX - d0005_Rev1.60
52
www.energymicro.com
Alternate
LOCATION
Functionality
0
1
2
3
Description
US1_TX
PC0
PD0
USART1 Asynchronous Transmit.Also used as receive input in half duplex
communication.
USART1 Synchronous mode Master Output / Slave Input (MOSI).
US2_CLK
PC4
USART2 clock input / output.
US2_CS
PC5
USART2 chip select input / output.
US2_RX
PC3
USART2 Asynchronous Receive.
USART2 Synchronous mode Master Input / Slave Output (MISO).
US2_TX
PC2
USART2 Asynchronous Transmit.Also used as receive input in half duplex
communication.
USART2 Synchronous mode Master Output / Slave Input (MOSI).
4.3 GPIO pinout overview
The specific GPIO pins available in EFM32G230 is shown in Table 4.3 (p. 52) . Each GPIO port is
organized as 16-bit ports indicated by letters A through F, and the individual pin on this port in indicated
by a number from 15 down to 0.
Table 4.3. GPIO Pinout
Port
Pin
15
Pin
14
Pin
13
Pin
12
Pin
11
Pin
10
Pin
9
Pin
8
Pin
7
Pin
6
Pin
5
Pin
4
Pin
3
Pin
2
Pin
1
Pin
0
Port A
PA15
-
PA10
PA9
PA8
-
PA6
PA5
PA4
PA3
PA2
PA1
PA0
Port B
-
PB14
PB13
PB12
PB11
-
PB8
PB7
-
Port C
PC15
PC14
PC13
PC12
PC11
PC10
PC9
PC8
PC7
PC6
PC5
PC4
PC3
PC2
PC1
PC0
Port D
-
PD8
PD7
PD6
PD5
PD4
PD3
PD2
PD1
PD0
Port E
PE15
PE14
PE13
PE12
PE11
PE10
PE9
PE8
-
Port F
-
PF5
PF4
PF3
PF2
PF1
PF0
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