ST NUCLEO-H745ZI-Q, User Manual

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UM2408 Rev 1 35/45
UM2408 Hardware layout and configuration
44
6.16 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 STM32H7 Nucleo-144 board.
To cope with Arduino Uno V3, apply the following modifications:
•
SB39 and SB62 must be ON
•
SB40 and SB69 must be OFF to connect I
2
C on A4 (pin 5) and A5 (pin 6 of CN9).
Caution:1 The I/Os of STM32H7 microcontroller are 3.3 V compatible instead of 5 V for Arduino Uno
V3.
Caution:2 R40 must be removed before implementing Arduino shield with V
REF+
power being provided
on CN7 pin 6. Refer to Table 16: Solder bridges for details on R40.
Table 17 shows the pin assignment for each STM32H7 microcontroller on the ST Zio
connectors.
Table 17. NUCLEO-H745ZI-Q and NUCLEO-H755ZI-Q pin assignments
Connector Pin
Pin
name
Signal name STM32H7 pin Function Remark
Left
connector
s
- - - - - -
CN8
1 NC NC - - Arduino support
3 IOREF IOREF - 3.3 V Ref Arduino support
5 NRST NRST NRST RESET Arduino support
7 3V3 3V3 - 3.3 V input/output Arduino support
9 5V 5V - 5 V output Arduino support
11 GND GND - ground Arduino support
13 GND GND - ground Arduino support
15 VIN VIN - Power input Arduino support
2 D43 SDMMC_D0 PC8 SDMMC -
4 D44
SDMMC_D1/
SAI2_EXTCLK
PC9
(1)
SDMMC/I2S_A -
6 D45 SDMMC_D2 PC10 SDMMC -
8 D46 SDMMC_D3 PC11 SDMMC -
10 D47 SDMMC_CK PC12 SDMMC -
12 D48 SDMMC_CMD PD2 SDMMC -
14 D49 I/O PG10
(2)
I/O -
16 D50 I/O PG8
(3)
I/O -