3.4 UART Communication Port

Figure 3-3. UART Port
Table 3-3. J2, UART Port Pinout
PinSignalFunction

1

GND

System ground

2

–

Not connected

3

Vdd

5Vcc from USB, provides 5Vcc to target

4

UART Tx

Transmission signal

5

UART Rx

Reception signal

6

–

Not connected