Table 2. Jtag Connector Pins Description; Figure 12. Jtag Connector; Figure 13. Jtag Connector Cn1 - Schematic - ST STM32 User Manual

Connectors of the STM32 performance line controller board
choice of development tools on the market supporting microcontroller Flash memory
programming and application debugging.

Figure 12. JTAG connector

Table 2.
Pin Signal
1 3V3 DC
2 3V3 DC
3 JTRST
4 GND
5 JTDI

Figure 13. JTAG connector CN1 - schematic

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2 4 6 8 10
1 3 5 7 9
JTAG connector pins description
Pin Signal Pin
RTCK Connected to
6 GND 11
GND by R1 (10 kΩ)
7 JTMS 12 GND
8 GND 13 JTDO
9 JTCK 14 GND
10 GND 15 NRST
CN1
JTAG 3.3 V
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Doc ID 15867 Rev 1
12 14 16 18 20
11 13 15 17 19
Signal Pin
16
17
18
19
20
JTRST Internal pull-up
JTDI Internal pull-up
JTMS Internal pull-up
JTCK Internal pull-down
R1
RTCK
10 KΩ
JTDO
NRST
DBGRQ R2 10 KΩ
DBGACK R14 10 KΩ
UM0722
AM00262
Signal
GND
DBGRQ Connected to
GND by R2 (10 kΩ)
GND
DBGACK Connected to
GND by R14 (10 kΩ)
GND
AM00482