| pin |
color |
signal |
| 1 |
black |
GND |
| 2 |
brown |
nCTS |
| 3 |
red |
Power |
| 4 |
orange |
TXD |
| 5 |
yellow |
RXD |
| 6 |
green |
nRTS |
JTAG
note: flat cable and "DuPont" connectors have Pin1 markings on opposite sides
20 pin
| signal |
row1 |
row2 |
signal |
| VTref |
1 |
2 |
NC |
| nTRST |
3 |
4 |
GND |
| TDI |
5 |
6 |
GND |
| TMS |
7 |
8 |
GND |
| TCK |
9 |
10 |
GND |
| RTCK |
11 |
12 |
GND |
| TDO |
13 |
14 |
GND |
| nRST |
15 |
16 |
GND |
| NC |
17 |
18 |
GND |
| +5V |
19 |
20 |
GND |
10 pin
| signal |
row1 |
row2 |
signal |
| VTref |
1 |
2 |
TMS |
| GND |
3 |
4 |
TCK |
| +5V |
5 |
6 |
TDO |
| RTCLK |
7 |
8 |
TDI |
| nTRST |
9 |
10 |
nRST |
SWD
20 pin
| signal |
row1 |
row2 |
signal |
| VTref |
1 |
2 |
NC |
| NC |
3 |
4 |
GND |
| NC |
5 |
6 |
GND |
| SWDIO |
7 |
8 |
GND |
| SWCLK |
9 |
10 |
GND |
| NC |
11 |
12 |
GND |
| SWO |
13 |
14 |
GND |
| nRST |
15 |
16 |
GND |
| NC |
17 |
18 |
GND |
| +5V |
19 |
20 |
GND |
10 pin
| signal |
row1 |
row2 |
signal |
| VTref |
1 |
2 |
SWIO |
| GND |
3 |
4 |
SWCLK |
| +5V |
5 |
6 |
SWO |
|
7 |
8 |
|
|
9 |
10 |
nRST |
references