UM1018 Connectors
Doc ID 18141 Rev 1 25/44
3.9 JTAG connector CN9
Figure 10. JTAG debugging connector CN9 (viewed from above PCB)
3.10 Trace debugging connector CN8
This is the same connector type as CN9 (see Figure 10).
Table 19. JTAG debugging connector CN9
Pin number Description Pin number Description
1 3.3 V power 2 3.3 V power
3 PB4 4 GND
5PA15 6GND
7PA13 8GND
9PA14 10GND
11 RTCK 12 GND
13 PB3 14 GND
15 RESET# 16 GND
17 DBGRQ 18 GND
19 DBGACK 20 GND
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Table 20. Trace debugging connector CN8
Pin number Description Pin number Description
1 3.3V power 2 TMS/PA13
3GND 4TCK/PA14
5GND 6TDO/PB3
7 KEY 8 TDI/PA15
9 GND 10 RESET#
11 GND 12 TraceCLK/PE2
13 GND 14 TraceD0/PE3 or SWO/PB3
15 GND 16 TraceD1/PE4 or nTRST/PB4
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