JAJSG23E January 2015 – August 2018 MSP430FR6820 , MSP430FR6822 , MSP430FR68221 , MSP430FR6870 , MSP430FR6872 , MSP430FR68721 , MSP430FR6920 , MSP430FR6922 , MSP430FR69221 , MSP430FR6970 , MSP430FR6972 , MSP430FR69721
PRODUCTION DATA.
The BSL enables programming of 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. Use of the BSL requires four pins as shown in Table 6-5. BSL entry requires a specific entry sequence on the RST/NMI/SBWTDIO and TEST/SBWTCK pins. For complete description of the features of the BSL and its implementation, see MSP430 FRAM Device Bootloader (BSL) User's Guide.
DEVICE SIGNAL | BSL FUNCTION |
---|---|
RST/NMI/SBWTDIO | Entry sequence signal |
TEST/SBWTCK | Entry sequence signal |
BSL_TX | Devices with UART BSL (FRxxxx): Data transmit |
BSL_RX | Devices with UART BSL (FRxxxx): Data receive |
BSL_DAT | Devices with I2C BSL (FRxxxx1): Data |
BSL_CLK | Devices with I2C BSL (FRxxxx1): Clock |
VCC | Power supply |
VSS | Ground supply |