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UM2179 Datasheet(PDF) 28 Page - STMicroelectronics

Part # UM2179
Description  STM32 Arm®-based microcontroller in LQFP144 package
PDF  48 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

UM2179 Datasheet(HTML) 28 Page - STMicroelectronics

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Hardware layout and configuration
UM2179
28/48
UM2179 Rev 9
5.13
Solder bridges and jumpers
SBxx are located on top layer and SB1xx-SB2xx on bottom layer of the STM32 Nucleo-144
board. The configuration of the solder bridges and jumpers is showed in Table 10.
Table 10. Configuration of the solder bridges and jumpers
Bridge/jumper
State(1)
Description
SB5 (+3V3_PER)
ON
Peripheral power +3V3_PER is connected to +3.3 V.
OFF
Peripheral power +3V3_PER is not connected.
SB6 (3.3 V)
ON
Output of voltage regulator LD39050PU33R is connected
to 3.3 V.
OFF
Output of voltage regulator LD39050PU33R is not connected.
SB195, SB193 (GPIO)
ON
PG7 and PG8 on STM32 are connected to ST morpho
connectors CN12. If these pins are used on ST morpho
connectors, SB130 and SB131 should be OFF.
OFF
PG7 and PG8 on STM32 are disconnected to ST morpho
connectors CN12.
SB131, SB130
(ST-LINK-USART)
ON
PA2 and PA3 on ST-LINK STM32F103CBT6 are connected to
PG7 and PG8 to enable the Virtual COM port. Thus PG7 and
PG8 on ST morpho connectors cannot be used.
OFF
PA2 and PA3 on ST-LINK STM32F103CBT6 are disconnected
to PG7 and PG8 on STM32.
SB152 (VDDA)
ON
VDDA on STM32 MCU is connected to VDD.
OFF
VDDA on STM32 MCU is disconnected to VDD.
SB100,102,104,106
(DEFAULT)
ON
Reserved, do not modify.
SB101,103,105,107
(RESERVED)
OFF
Reserved, do not modify.
SB141 (SWO)
ON
SWO signal of the STM32 (PB3) is connected to ST-LINK SWO
input.
OFF
SWO signal of STM32 is not connected.
SB110, SB111,SB112
(IOREF)
OFF,OFF,
ON
IOREF is connected to VDD_MCU.
ON, OFF,
OFF
IOREF is connected to +3.3 V.
OFF, ON,
OFF
IOREF is connected to +3V3_PER.
SB119 (VREF+)
OFF
Pin 6 of CN7 and Pin 7 of CN12 are disconnected to VREF+ on
STM32.
ON
Pin 6 of CN7 and Pin 7 of CN12 are connected to VREF+ on
STM32.
SB137 (SDMMC_D0),
SB136 (SDMMC_D1)
ON
These pins are connected to ST morpho connector CN12.
OFF
These pins are disconnected from ST morpho connector CN12
to avoid stub of SDMMC data signals on PCB.



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