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USART pin
USARTx_TX
USARTx_RX
USARTx_CK
USARTx_RTS
USARTx_CTS
UART pin
UARTx_TX
UARTx_RX
I2C pin
I2Cx_SCL
I2Cx_SDA
I2Cx_SMBA
SPI-I2S pin
SPIx_I2Sx_MISO_MCK
SPIx_I2Sx_MOSI_SD
SPIx_I2Sx_NSS_WS
SPIx_I2Sx_SCK_CK
JTAG/SWD pin
JTMS/SWDIO
JTCK/SWCLK
JTDI
JTDO
Table 5-38 USART
Configuration
Full duplex transmissions
Half duplex synchronous mode
Full duplex transmissions
Half duplex synchronous mode - no input
Synchronous mode
Hardware flow control
Hardware flow control
Table 5-39 UART
Configuration
Full duplex transmissions
Half duplex synchronous mode
Full duplex transmissions
Half duplex synchronous mode - no input
Table 5-40 I2C
Configuration
SCL-IN Digital Input
SCL-OUT Digital output
SDA-IN Digital Input
SDA-OUT Digital output
SDA-IN Digital Input
SDA-OUT Digital output
Table 5-41 SPI-I2S
Configuration
Master mode
Slave mode
Master mode
Slave mode
Master mode
Slave mode
Master mode
Slave mode
Table 5-42 JTAG/SWD
Configuration
Input Pull-up
Input Pull-down
Input Pull-up
Output
125 / 647
GPIO configuration
Alternate function push-pull
Alternate function push-pull
Alternate function push-pull
Unused, can be used as general I/O.
Alternate function push-pull
Alternate function push-pull
Alternate function push-pull
GPIO configuration
Alternate function push-pull
Alternate function push-pull
Alternate function push-pull
Unused, can be used as general I/O.
GPIO configuration
Alternate function open-drain
Alternate function open-drain
Alternate function open-drain
Alternate function open-drain
Alternate function open-drain
Alternate function open-drain
GPIO configuration
Alternate function push-pull
Alternate function push-pull
Alternate function push-pull
Alternate function push-pull
Alternate function push-pull
Alternate function push-pull
Alternate function push-pull
Alternate function push-pull
GPIO configuration
Alternate function push-pull + pull up
Alternate function push-pull + pull down
Alternate function push-pull + pull up
Alternate function push-pull
Nations Technologies Inc.
Tel：+86-755-86309900
Email：info@nationstech.com
Address: Nations Tower, #109 Baoshen Road, Hi-tech Park North.
Nanshan District, Shenzhen, 518057, P.R.China
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