ATmega328P MicroController IC

Pin Configuration:
Pin Function
1 Reset
2 Digital Pin (RX)
3 Digital Pin (TX)
4 Digital Pin
5 Digital Pin (PWM)
6 Digital Pin
7 Positive Voltage (Power)
8 Ground
9 Crystal Oscillator
10 Crystal Oscillator
11 Digital Pin (PWM)
12 Digital Pin (PWM)
13 Digital Pin
14 Digital Pin
15 Digital Pin (PWM)
16 Digital Pin (PWM)
17 Digital Pin (PWM)
18 Digital Pin
19 Digital Pin
20 Positive voltage for ADC (power)
21 Reference Voltage
22 Ground
23 Analog Input
24 Analog Input
25 Analog Input
26 Analog Input
27 Analog Input
28 Analog Input