Arduino Test Fixture
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Arduino Pin Budget (Atmega 328)
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Atmega 328
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Pin NumberAVR PinSpecial FeaturesMap to project needCommentsIn Schematic?
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D0PD0Serial TX
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D1PD1Serial RX
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D2PD2Hardware Interrupt
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D3PD3Hardware Interrupt/PWM
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D4PD4
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D5PD5PWM
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D6PD6PWM
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D7PD7
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D8PB0
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D9PB1PWM
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D10PB2PWM/SPI SS
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D11PB3PWM/SPI MOSI
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D12PB4SPI MISO
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D13PB5SPI SCK/Built-in Arduino LED
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D14/A0PC010-bit A/D
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D15/A1PC110-bit A/D
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D16/A2PC210-bit A/D
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D17/A3PC310-bit A/D
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D18/A4PC410-bit A/D / i2C SDA
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D19/A5PC510-bit A/D / i2C SCL
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Pin Budget