SLAS797C August 2014 – August 2018 MSP430FR6927 , MSP430FR69271 , MSP430FR6928 , MSP430FR6977 , MSP430FR6979 , MSP430FR69791
PRODUCTION DATA.
The MSP430 family supports the standard JTAG interface, which requires four signals for sending and receiving data. The JTAG signals are shared with general-purpose I/Os. The TEST/SBWTCK pin is used to enable the JTAG signals. In addition to these signals, the RST/NMI/SBWTDIO signal is required to interface with MSP430 development tools and device programmers. Table 6-7 lists the JTAG pin requirements. For details on interfacing to development tools and device programmers, see the MSP430 Hardware Tools User's Guide. For details on the JTAG implementation in MSP MCUs, see MSP430 Programming With the JTAG Interface.
DEVICE SIGNAL | DIRECTION | FUNCTION |
---|---|---|
PJ.3/TCK | IN | JTAG clock input |
PJ.2/TMS | IN | JTAG state control |
PJ.1/TDI/TCLK | IN | JTAG data input, TCLK input |
PJ.0/TDO | OUT | JTAG data output |
TEST/SBWTCK | IN | Enable JTAG pins |
RST/NMI/SBWTDIO | IN | External reset |
VCC | Power supply | |
VSS | Ground supply |