Hardware layout and configuration UM2206
30/55 UM2206 Rev 3
U11/U12
SMPS out
1.1 V
SB30 / SB46
ON
V
DD_1V2
powered by U11/U12 through the switch
U10
OFF
V
DD_1V2
powered directly by U11/U12. Switch U10
is not used (not recommended, see AN4978 on the
www.st.com website)
SB43
ON
V
DD_1V2
powered directly by U11/U12. Switch U10
is not used. (not recommended, see AN4978 on the
www.st.com website)
OFF
V
DD_1V2
powered by U11/U12 through the switch
U10
VOUTCORE
SB31 / SB46
ON
V
DD_1V2
powered by External V
OUT
V
CORE
from
CN10 through the switch U10
OFF
V
DD_1V2
powered directly by External Voutvcore
from CN10. Switch U10 is not used (not
recommended, see AN4978 on the www.st.com
website)
SB39
ON
V
DD_1V2
powered directly by External Voutvcore
from CN10. Switch U10 is not used. (not
recommended, see AN4978 on the www.st.com
website)
OFF
V
DD_1V2
powered by External Voutvcore from CN10
through the switch U10
VOUT2 SB51
ON MCU V
DD_1V2
connected to U12 V
OUT2
OFF MCU V
DD_1V2
NOT connected to U12 V
OUT2
PA10
UART1_RX
SB32
ON STLINK_RX connected to UART1_RX PA10
OFF STLINK_RX NOT connected to UART1_RX PA10
SB33
ON ARD_D0_RX connected to UART1_RX PA10
OFF ARD_D0_RX NOT connected to UART1_RX PA10
PA9
UART1_TX
SB34
ON STLINK_TX connected to UART1_TX PA9
OFF STLINK_TX NOT connected to UART1_TX PA9
SB35
ON ARD_D1_TX connected to UART1_TX PA10
OFF ARD_D1_TX NOT connected to UART1_TX PA10
PA2
LPUART1_TX
SB60
ON ARD_D1_TX connected to LPUART1_TX PA2
OFF ARD_D1_TX NOT connected to LPUART1_TX PA2
SB66
ON STLINK_TX connected to LPUART1_TX PA2
OFF STLINK_TX NOT connected to LPUART1_TX PA2
PA3
LPUART_RX
SB73
ON ARD_D0_RX connected to LPUART1_RX PA3
OFF
ARD_D0_RX NOT connected to LP UART1_RX
PA3
SB75
ON STLINK_RX connected to LPUART1_RX PA3
OFF STLINK_RX NOT connected to LPUART1_RX PA3
Table 12. Solder bridge configurations and settings (continued)
Definition Bridge State
(1)
Comment
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