Low Power PIC Voltage Levels

[Kyle]

I’m using a low power PIC in my project, specifically the PIC16LF1786, which has a VDD of 3.3V. What I’ve been wondering is, do the I/O voltage levels match VDD? For instance is a logic level HIGH 3.3V? or 5V?

 

I suppose I could supply different voltages and see what triggers it… the data sheet isn’t a big help in this situation since its for both the low and high power versions.

[AJISH ALFRED]

Hi,

If VDD is 3.3V how come it could give 5V at IO pins?

[Kyle]

By using a charge pump…

[AJISH ALFRED]

Don’t think this microcontroller has charge pump connected to I/O ports, however they are used for flash memory write/erase.

It is clearly written in the datasheet under “30.4 DC Characteristics: PIC16(L)F1784/6/7-I/E”

that the Maximum Output low voltage will be 0.6V and Minimum Output high voltage will be VDD – 0.7V.

[Author]

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