The BSL lets users program the flash memory or RAM using a UART serial interface. Access to the device memory by the BSL is protected by user-defined password. A bootloader security key is provided to disable the BSL completely or to disable the erasure of the flash if an invalid password is supplied. For complete description of the features of the BSL and its implementation, see MSP430 Programming With the Bootloader (BSL). Table 6-5 lists the pins required for BSL access.
|40-PIN QFN RSB PACKAGE||38-PIN TSSOP DA PACKAGE||40-PIN DSBGA YFF PACKAGE|
|RST/NMI/SBWTDIO||Entry sequence signal||Entry sequence signal||Entry sequence signal|
|TEST/SBWTCK||Entry sequence signal||Entry sequence signal||Entry sequence signal|
|Data transmit||P3.7 - 36||P3.5 - 37||P3.7 - B4|
|Data receive||P3.6 - 35||P3.6 - 38||P3.6 - A4|
|VCC||Power supply||Power supply||Power supply|
|VSS||Ground supply||Ground supply||Ground supply|