Figure 9.
Connecting an external debug tool to program the on-board STM32WL
Table 5.
CN16 MIPI10 / STDC14 debug connector
MIPI10 pin
STDC14 pin
CN4
Function
-
1
NC
Reserved
-
2
NC
Reserved
1
3
3V3
Target VCC
2
4
T_SWDIO
T_JTMS target SWDIO using SWD protocol or Target JTMS using
JTAG protocol
3
5
GND
Ground
4
6
T_SWCLK
T_JCLK target SWCLK using SWD protocol or Target JCLK using
JTAG protocol
5
7
GND
Ground
6
8
T_SWO
T_JTMS target SWO using SWD protocol or Target JTDO using JTAG
protocol
7
9
NC
Not connected
8
10
T_JTDI
T_JTDI not used by SWD protocol, Target JTDI using JTAG protocol,
only for external tools
9
11
GNDDetect
GND detect for plug indicator, used on SWD and JTAG neither
10
12
T_NRST
T_JTMS target NRST using SWD protocol or Target JTMS using JTAG
protocol
-
13
T_VCP_RX
Target RX used for VCP, from UART dedicated to bootloader
-
14
T_VCP_TX
Target TX used for VCP, from UART dedicated to bootloader
UM2592
Embedded STLINK-V3E
UM2592
-
Rev 1
page 14/49
