Refer to the PDF data sheet for device specific package drawings
The BSL enables users to program flash or SRAM on the device using a UART, I2C, or SPI serial interface. Access to the device memory through the BSL is protected by a user-defined password. Table 6-55 lists the device pins that are required to use the BSL.
|DEVICE PIN||BSL FUNCTION|
The BSL is invoked under any of the following conditions.
The user can perform hardware invocation of BSL using any pin of ports P1, P2, or P3. The pin selected for this purpose should not be same as one used for BSL communication. The user can configure the device pin and its polarity through the flash boot-override mailbox. The BSL can then be invoked upon a power cycle or POR reset event with the configured pin.
For the complete description of the BSL features and its implementation, see the MSP432P401R Bootloader (BSL) User's Guide.