In the energia tutorial it says that
"LaunchPad pins can source (provide positive current) or sink (provide negative current) up to 40 mA (milliamps) of current to other devices/circuits. "
http://energia.nu/Tutorial_DigitalPins.html
Is that correct for the Stellaris Launchpad? In the documentation for the LM4F120 it gives drive strength options of 2, 4, or 8 mA, and says up to 4 pins can sink 18 mA.
Where does the 40mA come from?
Can the MSP430 source/sink that much?
I note that the Arduino documentation says the same 40mA, so wondered if this specification was accidentall