ST STM32 User Manual page 31

UM1974
Bridge
SB156 (V )
BAT
SB173, SB180
(B1-USER)
SB179 (PA0)
SB142, SB152 (BOOT1,
Only for F2 and F4 Series)
SB147,SB157 (A4 and A5)
Or SB167, SB171 (only for
NUCLEO-F303ZE)
Or SB140,SB150 (only for
NUCLEO-F412ZG and
NUCLEO-F413ZH)
SB138,SB143 (I2C on A4
and A5)
RMII Signals
SB13 (PA1), SB164 (PC1),
SB160 (PA2), SB178 (PC4),
SB181 (PC5), SB182
(PG13), SB183 (PG11)
SB177 (Ethernet nRST)
USB signals:
SB186 (NUCLEO-F303ZE)
or SB187 (all other Nucleo
boards) (PG6)
SB132 (PA12), SB133
(PA11)
1. Default SBx state is shown in bold.
Table 12. Solder bridges (continued)
(1)
State
ON V pin of STM32 is connected to V
BAT
OFF V pin of STM32 is not connected to V
BAT
ON, OFF B1 push-button is connected to PC13.
B1 push-button is connected to PA0 (Set SB179 OFF if ST Zio connector
OFF,ON
is used).
OFF,OFF B1 push-button is not connected.
ON PA0 is connected to ST Zio connector (Pin 29 of CN10)
OFF PA0 is not connected to ST Zio connector (Pin 29 of CN10)
OFF, OFF BOOT1 (PB2) function is not used.
ON, OFF BOOT1 (PB2) is pulled up.
OFF,ON BOOT1 (PB2) is pulled down.
ON, ON Forbidden
ADC_IN are connected to A4 and A5 (pin 9 and 11) on ST Zio connector
ON
CN9. Thus SB138 and SB143 must be OFF.
ADC_IN are not connected to A4 and A5 (pin 9 and 11) on ST Zio
OFF
connector CN9.
PB9 and PB8 (I
OFF
ST Zio connector CN9.
PB9 and PB8 (I2C) are connected to A4 and A5 (pin 9 and 11) on ST Zio
connector CN9. Thus SB147 and SB157 (or SB167 and SB171 for
ON
NUCLEO-F303ZE or SB140 and SB150 for NUCLEO-F412ZG and
NUCLEO-F413ZH) must be OFF.
These pins are used as RMII signals and connected to Ethernet PHY.
ON
These ports must not be used on ST morpho or ST Zio connectors.
These pins are used as GPIOs on ST morpho connectors and not
OFF
connected to Ethernet PHY.
ON NRST of STM32 is connected to Ethernet PHY (U9).
OFF NRST of STM32 is not connected to Ethernet PHY (U9).
PG6 is connected to R70 to control USB D+ pull up (NUCLEO-F303ZE).
ON
PG6 is connected to 5 V switch Enable (U12) to control V
other NUCLEO).
OFF This pin is used as GPIO on ST morpho connectors.
ON These pins are used as D+ and D- on USB connector CN13.
OFF These pins are used as GPIOs on ST morpho connectors.
UM1974 Rev 9
Hardware layout and configuration
Description
DD
2
C) are not connected to A4 and A5 (pin 9 and 11) on
.
.
DD
or CN13 (All
BUS
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