PA51PA62PA73PB04PB15PB26PB37PB48PB59PC010PC111PC212PC313VDDIO214GND15PC416PC517PC618PC719PD020PD121PD222PD323PD424PD525PD626PD727AVDD28GND29PE030PE131PE232PE333PF0(XTAL32K1)34PF1(XTAL32K2)35PF236PF337PF438PF539PF6(RESET#)40UPDI41VDD42GND43PA0(XTALHF1)44PA1(XTALHF2)45PA246PA347PA448