TIDUF52 December 2023 MSPM0L1303 , MSPM0L1304 , MSPM0L1305 , MSPM0L1306 , MSPM0L1343 , MSPM0L1344 , MSPM0L1345 , MSPM0L1346
The J1, J2, and J3 connectors are provided to enable the RGB LED indication on the board. J2 (red LED) is enabled (connected) by default for smoke detection indication. The Blue and Green LEDs enabled by connectors J2 and J3 are currently not being used in firmware.
The J4 connector is for extra general-purpose input/output (GPIO) or a GND probe.
Pin PA18 of the MCU is shared for both the Bootstrap Loader (BSL) function and the analog input OPA1_IN0+. When BSL is not in use, J6 connector is disconnected by default. Likewise, when the BSL signal is being used, connect J6.
The J7 and J8 connectors (connected by default) are provided to reduce the Blue and IR LED current by disconnecting them as shown in Figure 3-2.