DocID028599 Rev 7 37/82
UM1974 Hardware layout and configuration
81
6.14 ST Zio connectors
CN7, CN8, CN9 and CN10 are female on top side and male on bottom side connectors.
They include support for Arduino Uno V3. Most shields designed for Arduino Uno V3 can fit
to the STM32 Nucleo-144 board.
To cope with Arduino Uno V3, apply the following modifications:
• SB138 and SB143 should be ON
• SB140/147/150/157/167/171 should be OFF to connect I
2
C on A4 (pin 5) and A5 (pin 6
of CN9).
Caution:1 The I/Os of STM32 microcontroller are 3.3 V compatible instead of 5 V for Arduino Uno V3.
Caution:2 SB12 should be removed before implementing Arduino shield with V
REF+
power being
provided on CN7 pin 6. Refer to Table 12: Solder bridges for details on SB12.
Table 13 to Table 17 show the pin assignment for each STM32 microcontroller on the ST Zio
connectors.
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