P2.21P2.32RST3RXD/P3.04TXD/P3.15XTAL26XTAL17INT0/P3.28INT1/P3.39ECI/T0/P3.410PWM1/PCA1/T1/P3.511PWM3/PCA3/P2.412P2.513GND14P2.615P2.716P3.7/PCA0/PWM017P1.0/ADC0/CLKOUT018P1.1/ADC1/CLKOUT119P1.2/ADC220P1.3/ADC321P1.4/ADC4/SS22P1.5/ADC5/MOSI23P1.6/ADC6/MISO24P1.7/ADC7/SCLK25P2.0/PCA2/PWM226P2.127VCC28