Pin number Description Pin number Description
13 NC 28 I2C4_SCL (PD12)
14 GND 29 GND
15 DCMI_PIXCLK (PA6) 30 VDD (3V3)
9.6 CN12 TAG connector
The CN12 TAG connector footprint is used to connect STM32H7B3LIH6QU microcontroller for programming or
debugging the board.
Figure 21. CN12 TAG connector
Table 17. CN12 TAG connector pinout
Pin number Description Pin number Description
1 VDD (3V3) 10 NRST (PH3)
2 SWDIO / JTMS (PA13) 9 NJTRST (PB4)
3 GND 8 JTDI (PA15)
4 SWCLK / JTCK (PA14) 7 NC
5 GND 6 SWO / JTDO (PB3)
9.7 CN16 EXT_I2C connector
The EXT_I2C connector socket (SSM-104-L-DH from SAMTEC) is used to connect external modules to I2C4
interface or to monitor the I2C4 interface.
Figure 22. CN16 EXT_I2C connector
UM2569
CN12 TAG connector
UM2569 - Rev 1
page 30/54
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