Forgot to comment about the MSP pins capability.

True, they can switch less current. But, an important thing to
consider is also the pin impedance. The higher the impedance, the
higher the voltage drop on the output buffer at the same load current.

From MSP430x11x1 datasheet, the port P1 impedance varies between 100
and 160 Ohm (0.6 V drop at 6 mA, and 0.25 V at 1.5 mA). The PIC16F627
has a 233 Ohm impedance for a high side switch (0.7 V drop at 3 mA)
and 70 Ohms for a low side switch (0.6 V drop at 8.5 mA). So PIC is
very similar (or even worse? :), unless I miss something.

 Nikolai

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