Some of input-output pins, beside their standard use can perform analog input or output operation. Any pin of port P0 as well as lower four pins of port P2 can be used as analog input. Inputs of port P0 are connected to
analog blocks over analog multiplexers, while in case of port P2 they are connected directly to programmable SC blocks. Pins P2[4] and P2[6] can serve as external referent voltage inputs. Outputs from analog blocks can
be connected to 4 output buffers, which are connected to P0[2],P0[3],P0[4] and P0[5] pins.
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