This "Remappable Pin Table" wiki page provides pin mappings and functionality for various microcontrollers and development boards, allowing users to understand the input/output pin assignments and specific features available on each.
Arduino Uno
| Pin no |
Port |
Bit |
Power |
GND |
Analog |
Xtal |
Osc |
RESET |
USART |
SPI |
I2C |
INT |
PCINT |
PWM |
Arduino Ref.
|
| 1 |
C |
6 |
|
|
|
|
|
!RESET |
|
|
|
|
PCINT14 |
|
|
| 2 |
D |
0 |
|
|
|
|
|
|
RXD |
|
|
|
PCINT16 |
|
0
|
| 3 |
D |
1 |
|
|
|
|
|
|
TXD |
|
|
|
PCINT17 |
|
1
|
| 4 |
D |
2 |
|
|
|
|
|
|
|
|
|
INT0 |
PCINT18 |
|
2
|
| 5 |
D |
3 |
|
|
|
|
|
|
|
|
|
INT1 |
PCINT19 |
PWM |
3
|
| 6 |
D |
4 |
|
|
|
|
|
|
|
|
|
|
PCINT20 |
|
4
|
| 7 |
|
|
VCC |
|
|
|
|
|
|
|
|
|
|
|
|
| 8 |
|
|
|
GND |
|
|
|
|
|
|
|
|
|
|
|
| 9 |
|
|
|
|
|
XTAL1 |
TOSC1 |
|
|
|
|
|
PCINT6 |
|
|
| 10 |
|
|
|
|
|
XTAL2 |
TOSC2 |
|
|
|
|
|
PCINT7 |
|
|
| 11 |
D |
5 |
|
|
|
|
|
|
|
|
|
|
PCINT21 |
PWM |
5
|
| 12 |
D |
6 |
|
|
|
|
|
|
|
|
|
|
PCINT22 |
PWM |
6
|
| 13 |
D |
7 |
|
|
|
|
|
|
|
|
|
|
PCINT23 |
|
7
|
| 14 |
B |
0 |
|
|
|
|
|
|
|
|
|
|
PCINT0 |
|
8
|
| 15 |
B |
1 |
|
|
|
|
|
|
|
|
|
|
PCINT1 |
PWM |
9
|
| 16 |
B |
2 |
|
|
|
|
|
|
|
SS |
|
|
PCINT2 |
PWM |
10
|
| 17 |
B |
3 |
|
|
|
|
|
|
|
MOSI |
|
|
PCINT3 |
PWM |
11
|
| 18 |
B |
4 |
|
|
|
|
|
|
|
MISO |
|
|
PCINT4 |
|
12
|
| 19 |
B |
5 |
|
|
|
|
|
|
|
SCK |
|
|
PCINT5 |
|
13
|
| 20 |
|
|
AVCC |
|
|
|
|
|
|
|
|
|
|
|
|
| 21 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 22 |
|
|
|
GND |
|
|
|
|
|
|
|
|
|
|
|
| 23 |
C |
0 |
|
|
ADC0 |
|
|
|
|
|
|
|
PCINT8 |
|
14
|
| 24 |
C |
1 |
|
|
ADC1 |
|
|
|
|
|
|
|
PCINT9 |
|
15
|
| 25 |
C |
2 |
|
|
ADC2 |
|
|
|
|
|
|
|
PCINT10 |
|
16
|
| 26 |
C |
3 |
|
|
ADC3 |
|
|
|
|
|
|
|
PCINT11 |
|
17
|
| 27 |
C |
4 |
|
|
ADC4 |
|
|
|
|
|
SCL |
|
PCINT12 |
|
18
|
| 28 |
C |
5 |
|
|
ADC5 |
|
|
|
|
|
SDA |
|
PCINT13 |
|
19
|
PIC16F18877
| Pin no |
Port |
Bit |
Power |
GND |
ADC |
Xtal |
Osc |
RESET |
USART |
SPI |
I2C |
INT |
PCINT |
PWM
|
| 1 |
E |
3 |
VPP |
|
|
|
|
!MCLR |
|
|
|
|
IOCE3 |
|
| 2 |
A |
0 |
|
|
ANA0 |
|
|
|
|
|
|
|
IOCA0 |
|
| 3 |
A |
1 |
|
|
ANA1 |
|
|
|
|
|
|
|
IOCA1 |
|
| 4 |
A |
2 |
|
|
ANA2 |
|
|
|
|
|
|
|
IOCA2 |
|
| 5 |
A |
3 |
|
|
ANA3 |
|
|
|
|
|
|
|
IOCA3 |
|
| 6 |
A |
4 |
|
|
ANA4 |
|
|
|
|
|
|
|
IOCA4 |
CCP5
|
| 7 |
A |
5 |
|
|
ANA5 |
|
|
|
|
SS1 |
|
|
IOCA5 |
|
| 8 |
E |
0 |
|
|
ANE0 |
|
|
|
|
|
|
|
|
|
| 9 |
E |
1 |
|
|
ANE1 |
|
|
|
|
|
|
|
|
|
| 10 |
E |
2 |
|
|
ANE2 |
|
|
|
|
|
|
|
|
|
| 11 |
|
|
VDD |
|
|
|
|
|
|
|
|
|
|
|
| 12 |
|
|
|
VSS |
|
|
|
|
|
|
|
|
|
|
| 13 |
A |
7 |
|
|
ANA7 |
|
OSC1/CLKIN |
|
|
|
|
|
IOCA7 |
|
| 14 |
A |
6 |
|
|
ANA6 |
|
OSC2/CLKOUT |
|
|
|
|
|
IOCA6 |
|
| 15 |
C |
0 |
|
|
ANC0 |
|
SOSCO |
|
|
|
|
|
|
|
| 16 |
C |
1 |
|
|
ANC1 |
|
SOSCI |
|
|
|
|
|
IOCC1 |
CCP2
|
| 17 |
C |
2 |
|
|
ANC2 |
|
|
|
|
|
|
|
IOCC2 |
CCP1
|
| 18 |
C |
3 |
|
|
ANC3 |
|
|
|
|
SCL1/SCK1 |
|
|
IOCC3 |
|
| 19 |
D |
0 |
|
|
AND0 |
|
|
|
|
|
SDA1/SDI1 |
|
IOCC4 |
|
| 20 |
D |
1 |
|
|
AND1 |
|
|
|
|
|
|
|
IOCC5 |
|
| 21 |
D |
2 |
|
|
AND2 |
|
|
|
|
|
|
|
IOCC6 |
|
| 22 |
D |
3 |
|
|
AND3 |
|
|
|
|
|
|
|
IOCC7 |
|
| 23 |
C |
4 |
|
|
ANC4 |
|
|
|
|
|
|
|
|
|
| 24 |
C |
5 |
|
|
ANC5 |
|
|
|
|
|
|
|
|
|
| 25 |
C |
6 |
|
|
ANC6 |
|
|
|
CK |
|
|
|
|
|
| 26 |
C |
7 |
|
|
ANC7 |
|
|
|
RX/DT |
|
|
|
|
|
| 27 |
D |
4 |
|
|
AND4 |
|
|
|
|
|
|
|
|
|
| 28 |
D |
5 |
|
|
AND5 |
|
|
|
|
|
|
|
|
|
| 29 |
D |
6 |
|
|
AND6 |
|
|
|
|
|
|
|
|
|
| 30 |
D |
7 |
|
|
AND7 |
|
|
|
|
|
|
|
|
|
| 31 |
|
|
|
VSS |
|
|
|
|
|
|
|
|
|
|
| 32 |
|
|
VDD |
|
|
|
|
|
|
|
|
|
|
|
| 33 |
B |
0 |
|
|
ANB0 |
|
|
|
|
SS2 |
|
|
IOCB0 |
CCP4
|
| 34 |
B |
1 |
|
|
ANB1 |
|
|
|
|
SCLK2 |
|
|
IOCB1 |
|
| 35 |
B |
2 |
|
|
ANB2 |
|
|
|
|
|
SDA2 |
|
IOCB2 |
|
| 36 |
B |
3 |
|
|
ANB3 |
|
|
|
|
|
|
|
IOCB3 |
|
| 37 |
B |
4 |
|
|
ANB4 |
|
|
|
|
|
|
|
IOCB4 |
|
| 38 |
B |
5 |
|
|
ANB5 |
|
|
|
|
|
|
|
IOCB5 |
CCP3
|
| 39 |
B |
6 |
|
|
ANB6 |
|
ICSPCLK |
|
|
|
|
|
IOCB6 |
|
| 40 |
B |
7 |
|
|
ANB7 |
|
ICSPDAT |
|
|
|
|
|
IOCB7 |
|
ESP32 Lolin DOWDQ6
| Pin no |
Port |
Bit |
Power |
GND |
ADC |
Xtal |
Osc |
RESET |
USART |
SPI |
I2C |
INT |
PCINT |
PWM |
Mfr. Ref.
|
| 1 |
B |
4 |
|
|
ADC1_0 |
|
|
|
|
|
|
|
|
|
GPIO36
|
| 2 |
B |
7 |
|
|
ADC1_3 |
|
|
|
|
|
|
|
|
|
GPIO39
|
| 3 |
|
|
|
|
|
|
|
!RESET |
|
|
|
|
|
|
|
| 4 |
B |
2 |
|
|
ADC1_6 |
|
|
|
|
|
|
|
|
|
GPIO34
|
| 5 |
B |
3 |
|
|
ADC1_7 |
|
|
|
|
|
|
|
|
|
GPIO35
|
| 6 |
B |
0 |
|
|
ADC1_4 |
|
XTAL32N |
|
|
|
|
|
|
PWM |
GPIO32
|
| 7 |
B |
1 |
|
|
ADC1_5 |
|
XTAL32P |
|
|
|
|
|
|
PWM |
GPIO33
|
| 8 |
A |
25 |
|
|
ADC2_8 |
|
|
|
|
|
|
|
|
PWM |
GPIO25
|
| 9 |
A |
26 |
|
|
ADC2_9 |
|
|
|
|
|
|
|
|
PWM |
GPIO26
|
| 10 |
A |
27 |
|
|
ADC2_7 |
|
|
|
|
|
|
|
|
PWM |
GPIO27
|
| 11 |
A |
14 |
|
|
ADC2_6 |
|
|
|
|
|
|
|
|
PWM |
GPIO14
|
| 12 |
A |
12 |
|
|
ADC2_5 |
|
|
|
|
|
|
|
|
PWM |
GPIO12
|
| 13 |
|
|
|
GND |
|
|
|
|
|
|
|
|
|
|
|
| 14 |
A |
13 |
|
|
ADC2_4 |
|
|
|
|
|
|
|
|
PWM |
GPIO13
|
| 15 |
A |
15 |
|
|
ADC2_3 |
|
|
|
|
|
|
|
|
PWM |
GPIO15
|
| 16 |
A |
2 |
|
|
ADC2_2 |
|
|
|
|
|
|
|
|
PWM |
GPIO2
|
| 17 |
A |
0 |
|
|
ADC2_1 |
|
|
|
|
|
|
|
|
PWM |
GPIO0
|
| 18 |
A |
4 |
|
|
ADC2_0 |
|
|
|
|
|
|
|
|
PWM |
GPIO4
|
| 19 |
A |
16 |
|
|
|
|
|
|
RX |
|
|
|
|
PWM |
GPIO16
|
| 20 |
A |
17 |
|
|
|
|
|
|
TX |
|
|
|
|
PWM |
GPIO17
|
| 21 |
A |
15 |
|
|
|
|
|
|
|
SS |
|
|
|
PWM |
GPIO15
|
| 22 |
A |
18 |
|
|
|
|
|
|
|
CLK |
|
|
|
PWM |
GPIO18
|
| 23 |
A |
23 |
|
|
|
|
|
|
|
MOSI |
|
|
|
PWM |
GPIO23
|
| 24 |
A |
19 |
|
|
|
|
|
|
CTS 0 |
MISO |
|
|
|
PWM |
GPIO19
|
| 25 |
A |
22 |
|
|
|
|
|
|
RTS 0 |
SCL |
|
|
|
PWM |
GPIO22
|
| 26 |
|
|
3V3 |
|
|
|
|
|
|
|
|
|
|
|
|
Matrix EBlocks Combo Board
| E-blocks connections |
|
|
|
|
|
|
|
|
| Port |
bit |
|
LED 1 |
Switch 2 |
7-seg |
LCD |
An |
Sound
|
| 1 |
0 |
|
0 |
|
DP |
|
Light |
|
| 1 |
1 |
|
1 |
|
Com0 |
|
pot |
|
| 1 |
2 |
|
2 |
|
Com1 |
|
|
|
| 1 |
3 |
|
3 |
|
Com2 |
|
|
|
| 1 |
4 |
|
4 |
|
Com3 |
|
|
|
| 1 |
5 |
|
5 |
|
|
|
|
|
| 1 |
6 |
|
6 |
|
|
|
|
|
| 1 |
7 |
|
7 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 2 |
0 |
|
|
0 |
A |
Data0 |
|
|
| 2 |
1 |
|
|
1 |
B |
Data1 |
|
|
| 2 |
2 |
|
|
2 |
C |
Data2 |
|
OutL
|
| 2 |
3 |
|
|
3 |
D |
Data3 |
|
OutR
|
| 2 |
4 |
|
|
4 |
E |
RS |
|
|
| 2 |
5 |
|
|
5 |
F |
Enable |
|
|
| 2 |
6 |
|
|
6 |
G |
|
|
|
| 2 |
7 |
|
|
7 |
H |
|
|
|
Matrix EBlocks Motor Board
| Port |
bit |
|
Servo
|
| 1 |
0 |
|
0
|
| 1 |
1 |
|
|
| 1 |
2 |
|
|
| 1 |
3 |
|
|
| 1 |
4 |
|
|
| 1 |
5 |
|
|
| 1 |
6 |
|
|
| 1 |
7 |
|
|
