Xnucleo User Manual
13
V2.6.1, Apr. 25
th
2015
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The pins D11, D12 and D13 of Arduino connector are SPI interfaces. For XNUCLEO-F302R8, the
pins PB13, PB14 and PB15 are connected to the pins D13, D12 and D11, respectively. And for
other XNUCLEO devices, the pins PA5, PA6 and PA7 are connected to the pins D13, D12, and D11,
respectively.
2.8
USB CONNECTOR
Except the XNUCLEO-F030R8, all the other XNUCLEO devices have reserved a USB connector
which can be enabled by setting JP1 to ON.
2.9
SOLDER BRIDGES
Table 9: solder bridges
Bridge
State
Description
SB74
ON
IOREF is connected to 3.3V
OFF
IOREF unconnected
SB75
ON
IOREF is connected to 5V
OFF
IOREF unconnected
SB45 (VBAT/VLCD)
ON
VBAT or VLCD on STM32 MCU is connected to VDD.
OFF
VBAT or VLCD on STM32 MCU is not connected to VDD.
SB57 (VREF+)
ON
VREF+ on STM32 MCU is connected to VDD.
OFF
VREF+ on STM32 MCU is not connected to VDD and can be provided from
pin 7 of CN10
Notes: All the other solder bridges present on the STM32 Xnucleo board are used to configure
several IOs and power supply pins for compatibility of features and leads with STM32 MCU
supported.
2.10
EXTENSION CONNECTOR
The following figures show the signals connected by default to Arduino connectors (CN5, CN6,
CN8, CN9) and to ST Morpho connector (CN7 and CN10), for each STM32 Xnucleo board.
