ST NUCLEO-H755ZI-Q User Manual

Hardware layout and configuration UM2408
34/51 UM2408 Rev 2
All the other solder bridges present on the STM32H7 Nucleo-144 board are used to
configure several I/Os and power supply pins for compatibility of features and pinout with
the supported target STM32H7.
The STM32H7 Nucleo-144 board is delivered with the solder bridges configured, according
to the supported target STM32H7.
6.15 Extension connectors
For each STM32H7 Nucleo-144 board, the following figures show the signals connected by
default to the ST Zio connectors (CN7, CN8, CN9, and CN10), including the support for
ARDUINO
®
Uno V3.
SB78 (A8)
ON PA2 connected to Zio A8 (NUCLEO-H7A3ZI-Q)
OFF PA2 disconnected from Zio A8 (H745)
RMII signals
SB80 (PA1), SB84
(PC1), JP7 (PA2),
SB63 (PC4), SB48
(PC5), SB46 (PG13),
SB36 (PG11)
ON
These pins are used as RMII signals and connected to Ethernet
PHY.
These ports must not be used on ST morpho or ST Zio connectors.
OFF
(2)
1.NUCLEO-H745ZI-Q / NUCLEO-H755ZI-Q: these pins are used
as GPIOs on ST morpho connectors and not connected to Ethernet
PHY.
2.NUCLEO-H7A3ZI-Q: no Ethernet
RMII signals
SB98 (Ethernet
nRST)
ON NRST of STM32H7 is connected to Ethernet PHY (U15).
OFF
(2)
NRST of STM32H7 is not connected to Ethernet PHY (U15).
SB26 (PA12), SB27
(PA11)
ON These pins are used as D+ and D- on USB connector CN13.
OFF These pins are used as GPIOs on ST morpho connectors.
1. The default SBx state is shown in bold.
2. No default configuration for RMII signals.
Table 16. Solder bridges (continued)
Bridge State
(1)
Description
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ST NUCLEO-H755ZI-Q Specifications

General

Brand	ST
Model	NUCLEO-H755ZI-Q
Category	Motherboard
Language	English