User manual

CON3:
Pin # Signal Name Pin # Signal Name
1 RE0 2 RE1
3 RE2 4 RE3
5 RE4 6 RE5
7 RE6 8 RE7
9 LED2 10 RF1
11 TX2 12 RB12
13 RX2 14 VIN
15 GND 16 +5V
17 +3.3V 18 GND
19 AGND 20 VDD
Note: This connector is not mounted on the board.
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