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# Set of noob questions !

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Another noob question: Whats the min output voltage to pin be as "high" or "1" ?

thanks again.

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In the datasheets (not the user guid) is specified that when loading a pin with 6mA, then the voltage is at least Vcc - 0.3 (so for 3.6V Vcc the pin is at least 3.3V)

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Thanks again mr. Runner.

But now i

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No, your calculation does not account for the load of the MSP430.

It is best to use two diodes in series, each casuing a drop of 0.7 V, 5V - 0.7V - 0.7V = 3.6V

Alternatively use a resistor divider: connect a resistor (say 1k) between the PIC and the MSP430, then connect a 2k resistor from the MSP430 (same pin) to ground. (google voltage divider).

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No, your calculation does not account for the load of the MSP430.

It is best to use two diodes in series, each casuing a drop of 0.7 V, 5V - 0.7V - 0.7V = 3.6V

Alternatively use a resistor divider: connect a resistor (say 1k) between the PIC and the MSP430, then connect a 2k resistor from the MSP430 (same pin) to ground. (google voltage divider).

Thanks Runner, what kind of diode ? 1n4148 ? 1n4007 ?

Have a nice day.

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any, but the voltage divider solution is cheaper, and works very well if you know the load (only the msp430 pin)

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