RAK RAK5205, Руководство пользователя, Страница: 9 / 27

9
RAK5205 User Manual V1.4
RAK
5205
2.5.5
J22
30pins, follow the 96Board’s pin definition.
Pin Pin Name Description
1-2 NC NC
3 UART1_TX UART1_TX
4 NC NC
5 UART1_RX1
UART1_RX1 (need to connect RX pin and
RX1 pin of J25 via jumper if user wants to
use this UART interface).
6-8 NC NC
9-10 GND GND
11 VCC
IN
5V
OUT
12 VCC_3V3 3V3 OUT
13 PA8 GPIO Pin
14 PB3 GPIO Pin
15 NC NC
16 PB5 GPIO Pin
17 SWD_TMS
GPIO Pin / R21, R22 pull-up 10K resistor
can be used as JTAG interface
18 SWD_CLK
19 LED1_PA12 GPIO Pin
20 LED2_PB4 GPIO Pin
21 NC NC
22 SCL I2C
23 NC NC
24 SDA I2C
25 NC NC
26 PB12 ADC Interface
27-28 NC NC
29 RST Reset Pin
30 NC NC
Table 2 | Pin Descriptions
2.5.6
J25
(RX1, RX, RXCP) J22 and USB UART share. If you use the UART of J22, you
need to connect Rx and RX1 pins. If you use USB UART, you need to connect
Rx and RXCP pins.
R
A
K
52
05
B
oa
rd
P
in
O
ut