7 Extension connectors
Six extension connectors are implemented on the STM32U5 Nucleo-144 board:
• CN7, CN8, CN9, and CN10 as Zio connectors supporting ARDUINO
®
Uno V3
• CN11 and CN12 as ST morpho connectors
7.1
Zio connectors supporting ARDUINO
®
Uno V3
The CN7, CN8, CN9, and CN10 Zio connectors are female connectors supporting the ARDUINO
®
Uno V3
standard. Most shields designed for ARDUINO
®
can fit the Nucleo board.
Caution: Most of the STM32 microcontroller I/Os are 5 V‑tolerant, but few of them are only 3V3‑compatible, while
ARDUINO
®
Uno V3 is 5 V‑compatible. Refer to the STM32U5 Series data brief and STM32U5xx product
datasheets for their I/O structure.
Figure 16. Zio connectors supporting ARDUINO
®
Uno V3
The related pinout for the ARDUINO
®
connector is listed in Table 15, Table 16, Table 17, and Table 18.
UM2861
Extension connectors
UM2861 - Rev 2
page 32/49
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