DocID030906 Rev 2 39/78
UM2271 Connectors
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11.9 TAG connector CN8
The TAG connector footprint CN8 is used to connect STM32L4R9AI microcontroller for
programming or debugging the board.
Figure 17. TAG connector CN8
11.10 SWD header CN5
The 6-pin SWD header is used to program or debug an MCU in an external application
board using a dedicated cable connected to it. To use this SWD header interface, pins 2 and
3 of JP10 need to be connected with a jumper. Furthermore, SW1 must be set in OFF
position while R24 and R31 need to be disconnected.
By default, STLINK/V2-1 is used to program or debug on board MCU. Pin1 and 2 of JP10
are connected, SW1 is in ON position, R24 and R31 are connected.
10 DCMI_D6 (PB8) 25 DCMI_PWR_EN (MFX_GPIO12)
11 DCMI_D7 (PI7) 26 DCMI_NRST (NRST from MCU)
12 NC 27 I2C1_SDA (PG13)
13 NC 28 I2C1_SCL (PB6)
14 GND 29 GND
15 DCMI_PIXCK (PH5) 30 VDD
Table 22. Camera module connector CN2 (continued)
Pin number Description Pin number Description
Table 23. TAG connector CN8
Pin number Description Pin number Description
1 VDD 10 NRST (PH3, RESET#)
2 SWDIO (PA13) 9 NA
3GND 8NA
4 SWCLK (PA14) 7 NA
5GND 6SWO (PB3)
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