ZHCSI49C September 2014 – March 2021
PRODUCTION DATA
The MSP430i family supports the standard JTAG interface which requires four signals for sending and receiving data. The JTAG signals are shared with general-purpose I/O. The TEST/SBWTCK pin is used to enable the JTAG signals. In addition to these signals, the RST/NMI/SBWTDIO is required to interface with MSP430i development tools and device programmers. Table 9-6 lists the JTAG pin requirements. For further details on interfacing to development tools and device programmers, see the MSP430 Hardware Tools User's Guide.
DEVICE SIGNAL | DIRECTION | FUNCTION |
---|---|---|
P1.0/UCA0STE/MCLK/TCK | IN | JTAG clock input |
P1.1/UCA0CLK/SMCLK/TMS | IN | JTAG state control |
P1.2/UCA0RXD/UCA0SOMI/ACLK/TDI/TCLK | IN | JTAG data input/TCLK input |
P1.3/UCA0TXD/UCA0SIMO/TA0CLK/TDO/TDI | OUT | JTAG data output |
TEST/SBWTCK | IN | Enable JTAG pins |
RST/NMI/SBWTDIO | IN | External reset |
VCC | Power supply | |
DVSS | Ground supply |