msp430 launchpad PWR led blinking
Every launchpad have a built in regulator that power the chip during code upload. Changing that voltage level on the launchpad may be difficult and very time consuming. 

However, you can extract the mictrocontroller from the launchpad to power it on a breadboard (2V or so). To upload the code, you will need to connect the Test, RST and the ground pin to the launchpad. You have to take care of the voltage value of Test and RST. Those voltage will be at 3.3v (because there are coming from the launchpad), you will have to lower them to Vcc. 







simulate this circuit &ndash; Schematic created using CircuitLab

Note that the voltage adapt has to be bidirectional, the MSP430 send some message to the launchpad as well.