Virtual Com Port (Vcp): Usart; Solder Bridges; Table 7. Usart Connection; Table 8. Solder Bridge Configuration - ST STM32G0 User Manual

6.5.3 Current consumption measurement (IDD)
Jumper JP1, labeled IDD, is used to measure the STM32G0 microcontroller consumption by removing the jumper
and connecting an ammeter.
• JP1 ON: STM32G0 is powered by the +3V3 voltage (default)
• JP1 OFF: an ammeter must be connected to measure the STM32G0 current. If there is no ammeter, the
STM32G0 is not powered.
6.5.4

Virtual COM port (VCP): USART

The STM32G0 Nucleo-32 board offers the possibility to connect a USART interface to the ST-LINK/V2-1.
Solder bridge configuration
SB3, SB4: ON
1. The default configuration is in bold.
The communication between the target and the MCU is enabled on USART2 to support the Virtual COM port.
6.6

Solder bridges

Table 8 details the solder bridges of the STM32G0 Nucleo-32 board.
Solder bridge control
USB power
ST-LINK reset
VCP_TX
VCP_RX
SWCLK
BOOT0 pull-down resistor
MCO
32 kHz LSE quartz
UM2591 - Rev 1
Table 7. USART connection
(1)
USART2 (PA2/PA3) connected to ST-LINK/V2-1 Virtual COM port.
Table 8. Solder bridge configuration
Solder
(1)
State
bridge (SB)
ON USB power limited to 100 mA max
SB1
OFF USB power limited to 300 mA max
ON ST-LINK in RESET state
SB2
OFF ST-LINK normal operation
ON VCP_TX is connected to STM32G0 I/O PA3
SB3
OFF VCP_TX is not connected to STM32G0 I/O PA3
ON VCP_RX is connected to STM32G0 I/O PA2
SB4
OFF VCP_RX is not connected to STM32G0 I/O PA2
ON SWCLK is connected to STM32G0 I/O PA14
SB5
OFF SWCLK is not connected to STM32G0 I/O PA14
ON 10 kΩ pull-down resistor not present on STM32G0 BOOT0 pin
SB6
10 kΩ pull-down resistor not present on STM32G0 BOOT0
OFF
pin
ON MCO from ST-LINK connected to STM32G0 PC14
SB7
OFF MCO from ST-LINK not connected to STM32G0 PC14
ON 32 kHz LSE quartz enabled
SB8
32 kHz LSE quartz disabled (useful when using MCO function
OFF
from ST-LINK)
ON 32 kHz LSE quartz enabled
SB9
32 kHz LSE quartz disabled (useful when using MCO function
OFF
from ST-LINK)
UM2591
Solder bridges
(1)
Feature
(1)
Description
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