1
7
Table 2.1 Serial Interface Connector Signal Pins
Pin No
Signal name
I/O
Remarks
1
GND
-
2
TxD
Output
TXB(UART)
3
RxD
I
RXB(UART)
4
GND
-
5
RTS
O
RTSB(UART)
6
CTS
I
CTSB(UART)
7
GND
-
8
Reserved
-
ISP TCK(*)
9
Reserved
-
GND(*)
10
Reserved
-
ISP TMS(*)
11
Reserved
-
ISP Plug(*)
12
Reserved
-
ISP BScan(*)
13
Reserved
-
ISP TDI(*)
14
Reserved
-
ISP TDO(*)
15
Reserved
-
Vcc(3.3V) (*)
* These pins are only used to test the board when it is shipped from the factory. Don’t use these pins for other
purposes.