PB1/ANA1/AMPINN1PB2/ANA2/AMPINP2PB3/CLKIN/ANA33VDD4PA0/T0IN/T0OUT#/XIN5PA1/T0OUT/XOUT6VSS7PA2/DE08PA3/CTS0#9PA4/RXD010PA5/TXD011PA6/T1IN/T1OUT#12PA7/T1OUT13RESET#/PD014DBG15PC0/ANA4/CINP/LED16PC1/ANA5/CINN/LED17PC2/ANA6/LED/VREF18PC3/COUT/LED19PB0/ANA0/AMPOUT20