User's Manual

XR-50B WIFI module
Copyright © 2019 ShenzhenJiXinInteligence Co., Ltd All Rights Reserved
Page 7 of 17
2、Pin definition
XR-50B has 40 pins，definitions are shown in Figure 2.1 and Table 2.2.
Figure 2.1 XR-50B Pin diagram
Table 2.2 Pin function description
Number
Name
Functions
1
TX0
UART0_TX； JTAG_TMS；PWM4/ECT4；SWD_TMS；EINTB0
2
RX0
UART0_RX；JTAG_TCK；PWM5/ECT5；SWD_TCK；EINTB1
3
GND
Ground
4
PA0
SPI1_MOSI ；SD_CMD； TWI1_SCL； CSI_D0；EINTA0
5
PA1
SPI1_MISO； SD_DATA0 ；TWI1_SDA； CSI_D1；EINTA1
6
PA2
SPI1_CLK ；SD_CLK ； CSI_D2； UART0_TX；EINTA2