|
发表于 2015-3-25 10:26:20
|
显示全部楼层
MSP430 devices with Spy-Bi-Wire (SBW) access
The SBW interface and any access to the JTAG interface is disabled while the TEST/SBWTCK pin is
held low. This is accomplished by an internal pulldown resistor. The pin can also be tied low externally.
Pulling the TEST/SBWTCK pin high enables the SBW interface and disables the RST/NMI functionality
of the RST/NMI/SBWTDIO pin. While the SBW interface is active, the internal reset signal is held high,
and the internal NMI signal is held at the input value seen at RST/NMI with TEST/SBWTCK going high. |
|