The BSL can program the FRAM or RAM using a UART serial interface (FRxxxx devices) or an I2C interface (FRxxxx1 devices). Access to the device memory through the BSL is protected by an user-defined password. Table 9-6 lists the pins that are required to use the BSL. BSL entry requires a specific entry sequence on the RST/NMI/SBWTDIO and TEST/SBWTCK pins. For a complete description of the features of the BSL and its implementation, see the MSP430 FRAM Devices Bootloader (BSL) User's Guide. Visit Bootloader (BSL) for MSP low-power microcontrollers for more information.
|DEVICE SIGNAL||BSL FUNCTION|
|RST/NMI/SBWTDIO||Entry sequence signal|
|TEST/SBWTCK||Entry sequence signal|
|P2.0||Devices with UART BSL (FRxxxx): Data transmit|
|P2.1||Devices with UART BSL (FRxxxx): Data receive|
|P1.6||Devices with I2C BSL (FRxxxx1): Data|
|P1.7||Devices with I2C BSL (FRxxxx1): Clock|