Hi,
I am using a MSP-FET430UIF with a Rowley CrossWorks Complier / Debugger. I am
using a MSP430F235 mcu. When I turn on the SVS and turn on the PORON bit in the
SVSCTL, when I lower the voltage during testing a POR is never generated, but
the UIF becomes disconnected from CrossStudio leaving me "blind" to what is
happening with the MSP430. To make matters worse, if I set the VLDx bits in
SVSCTL to the highest low-voltage setting (3.7V); as soon as I boot the board
the UIF disconnects. I cannot reconnect the UIF to the board, meaning I cannot
even modify the firmware that is now on the board. I was able to recover from
this situation by dropping the voltage to the BOR level. At the BOR level I was
able to reconnect the UIF and was then able to modify the firmware.
Has anyone else run into this situation. If so, is there anyway to ensure the
UIF stays connected so that I can test SVS low-voltage scenarios?
Tom
Problem with MSP-FET430UIF at using SVS
Started by ●September 30, 2009
Reply by ●September 30, 20092009-09-30
Yes, I have seen someone in this group got into the same situation before.
Search the old msgs.
--- In m..., "tegger60" wrote:
>
> Hi,
>
> I am using a MSP-FET430UIF with a Rowley CrossWorks Complier / Debugger. I am using a MSP430F235 mcu. When I turn on the SVS and turn on the PORON bit in the SVSCTL, when I lower the voltage during testing a POR is never generated, but the UIF becomes disconnected from CrossStudio leaving me "blind" to what is happening with the MSP430. To make matters worse, if I set the VLDx bits in SVSCTL to the highest low-voltage setting (3.7V); as soon as I boot the board the UIF disconnects. I cannot reconnect the UIF to the board, meaning I cannot even modify the firmware that is now on the board. I was able to recover from this situation by dropping the voltage to the BOR level. At the BOR level I was able to reconnect the UIF and was then able to modify the firmware.
>
> Has anyone else run into this situation. If so, is there anyway to ensure the UIF stays connected so that I can test SVS low-voltage scenarios?
>
> Tom
>
--- In m..., "tegger60" wrote:
>
> Hi,
>
> I am using a MSP-FET430UIF with a Rowley CrossWorks Complier / Debugger. I am using a MSP430F235 mcu. When I turn on the SVS and turn on the PORON bit in the SVSCTL, when I lower the voltage during testing a POR is never generated, but the UIF becomes disconnected from CrossStudio leaving me "blind" to what is happening with the MSP430. To make matters worse, if I set the VLDx bits in SVSCTL to the highest low-voltage setting (3.7V); as soon as I boot the board the UIF disconnects. I cannot reconnect the UIF to the board, meaning I cannot even modify the firmware that is now on the board. I was able to recover from this situation by dropping the voltage to the BOR level. At the BOR level I was able to reconnect the UIF and was then able to modify the firmware.
>
> Has anyone else run into this situation. If so, is there anyway to ensure the UIF stays connected so that I can test SVS low-voltage scenarios?
>
> Tom
>
