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Board overview
Arduino Mega 2560 Rev3
Arduino · Mega
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Showing 76 of 76 pins
Simplified technical illustration. Pin data is source-backed; verify against the linked documentation before wiring.
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Mapped source · Arduino Mega 2560 full pinout PDFOfficial- Official Arduino Mega 2560 Rev3 full pinout uses D0-D53 and A0-D54 through A15-D69 labels.
- Mega 2560 IO is 5 V; level-shift 3.3 V-only peripherals.
- CIPO/COPI are Arduino's newer names for MISO/MOSI.
All 76 pins
| # | Signal | Role | Net | Also / notes |
|---|---|---|---|---|
| Digital | ||||
| 1 | UART | UART0 | ||
| 2 | UART | UART0 | ||
| 3 | GPIO | |||
| 4 | PWM | |||
| 5 | GPIO | |||
| 6 | PWM | |||
| 7 | PWM | |||
| 8 | GPIO | |||
| 9 | PWM | |||
| 10 | PWM | |||
| 11 | PWM | |||
| 12 | PWM | |||
| 13 | PWM | |||
| 14 | PWM | |||
| 15 | UART | UART3 | ||
| 16 | UART | UART3 | ||
| 17 | UART | UART2 | ||
| 18 | UART | UART2 | ||
| 19 | UART | UART1 | ||
| 20 | UART | UART1 | ||
| 21 | I2C | I2C | ||
| 22 | I2C | I2C | ||
| 23 | GPIO | |||
| 24 | GPIO | |||
| 25 | GPIO | |||
| 26 | GPIO | |||
| 27 | GPIO | |||
| 28 | GPIO | |||
| 29 | GPIO | |||
| 30 | GPIO | |||
| 31 | GPIO | |||
| 32 | GPIO | |||
| 33 | GPIO | |||
| 34 | GPIO | |||
| 35 | GPIO | |||
| 36 | GPIO | |||
| 37 | GPIO | |||
| 38 | GPIO | |||
| 39 | GPIO | |||
| 40 | GPIO | |||
| 41 | GPIO | |||
| 42 | GPIO | |||
| 43 | GPIO | |||
| 44 | GPIO | |||
| 45 | PWM | |||
| 46 | PWM | |||
| 47 | PWM | |||
| 48 | GPIO | |||
| 49 | GPIO | |||
| 50 | GPIO | |||
| 51 | SPI | SPI | ||
| 52 | SPI | SPI | ||
| 53 | SPI | SPI | ||
| 54 | SPI | SPI | ||
| Analog / Power | ||||
| 54 | ADC | |||
| 55 | ADC | |||
| 56 | ADC | |||
| 57 | ADC | |||
| 58 | ADC | |||
| 59 | ADC | |||
| 60 | ADC | |||
| 61 | ADC | |||
| 62 | ADC | |||
| 63 | ADC | |||
| 64 | ADC | |||
| 65 | ADC | |||
| 66 | ADC | |||
| 67 | ADC | |||
| 68 | ADC | |||
| 69 | ADC | |||
| 70 | Power | IOREF | ||
| 71 | System | |||
| 72 | Power | 3V3 | ||
| 73 | Power | 5V | ||
| 74 | Ground | GND | ||
| 75 | Power | VIN | ||