User Manual

XR‐22A W
IFI modu
le
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Copyright©2019  ShenzhenJiXinInteligenceCo.,LtdAllRightsReserved 
Page8of14
5 PA0 TWI1_SCL；EINTA0
6 PA1 TWI1_SDA；EINTA1
PA18；TWI0_SDA；IR_TX；IR_RX；EINTA18
7 PA22 UART2_TX；PWM3/ECT3；SPI1_CS0；WUPIO8；EINTA22
8 VCC powersupply,2.7~5.5V；
9 GND ground
10 PA21 UART2_RX;PWM2/ECT2；SPI1_CLK；WUPIO7；EINTA21
11 PA20 UART2_CTS;TWI0_SDA;PWM1/ECT1;SPI1_MISO;
WUPIO6;  EINTA20
12 PB3 SWD_TCK；JTAG_TDI；PWM7/ECT7；EINTB3;
downloadmode:pull-down,Runmode:do
nothandleorpull-up
13 PA19 UART2_RTS;TWI0_SCL;PWM0/ECT0;SPI1_MOSI;
WUPIO5;EINTA19
14 PA7 UART1_TX；TWI0_SDA；EINTA7；
PA17；WUPIO4；TWI0_SCL；IR_RX；32KOSCO；EINTA17
15 RX0 UART0_RX；JTAG_TCK；PWM5/ECT5；SWD_TCK；EINTB1
16 TX0 UART0_TX;JTAG_TMS；PWM4/ECT4；SWD_TMS；EINTB0
17 ANT Reservedantennapin
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