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Comp_A+ Module
Apart from ADCs MSP430x2xx devices are equipped with an analogue comparator called Comparator
A+ or simply Comp_A+ module.
Shown above is the block diagram for Comp A+ module. The left most side includes comparator inputs.
A good thing to note is that unlike other micros where comparator pins are generally fixed to some
dedicated I/Os only, the pins of COMP A+ can be tied with a number of I/O, adding great flexibility in
design. The purple region in the centre houses reference sources that can be tied to the comparator
inputs. At the comparator output stage (orange area), there is an optional low pass filter. Additionally,
comparator inputs can be shorted to remove any stray static. Use GRACE to explore more features of
Comp A+.
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