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3.3V 8Mhz Analog Input Pins: 6. 8 analog inputs ports:A0 ~ A7. DC Current per I/O Pin: 40 mA. 20 Digital input / output ports:TX, RX, D2 ~ D13, A0~A5. Clock Speed:8 MHz. Digital I/O Pins 14 (of which 6 provide PWM output).
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