The nRF54LM20 DK has a range of solder bridges for enabling or disabling functionality on the nRF54LM20 DK.
The following table is an overview of the solder bridges on the nRF54LM20 DK.
| Solder bridge | Default | Function |
|---|---|---|
| SB1 | Closed | Cut to disconnect the 32.768 kHz from P1.20. |
| SB2 | Closed | Cut to disconnect the 32.768 kHz from P1.21. |
| SB3 | Open | Short to enable P1.20 as GPIO. |
| SB4 | Open | Short to enable P1.21 as GPIO. |
| SB5 | Closed | Cut to disconnect the IO3 signal for external flash from the nRF54LM20B SoC. |
| SB6 | Closed | Cut to disconnect VBUS:nRF from the power switch. |
| SB17 | Open | Short to bypass the 5V domain for the nPM1300 PMIC. |
| SB18 | Closed | Cut to disconnect VSYS from P5V0. |
| SB19 | Open | Short to connect VDD:nRF and VDD:IO. |
| SB20 | Open | Short to disconnect VDD:_nRF_PMIC and VDD:IO. |
| SB21 | Open | Short to connect VOUT2 and VDD:IO. |
| SB22 | Open | Short to enable the 100 kΩ pull up resistor for the RESET_BUTTON signal |
| SB23 | Closed | Cut to disconnect the VDD:IO domain from external flash power. |
| SB24 | Open | Short to connect the VDD:nRF domain for supplying power to the external flash. |
| SB25 | Open | Short to connect RESET button to the nRF54_RESET. |
| SB26 | Closed | Cut to disconnect debugger from the RESET button line. |
| SB27 | Open | Short to use VDD:nRF_PMIC as the source for LDO1. |
| SB28 | Closed | Cut to disconnect P5V0 as the source for LDO1. |
| SB29 | Closed | Cut to disconnect P5V0 as the source for LDO2. |
| SB30 | Open | Short to use VDD:nRF_PMIC as the source for LDO2. |
| SB31 | Closed | Cut to disconnect VBUS from 5V0:CONN. |