topic Re: What is the absolute maximum supply voltage for MK20 microcontroller ? in Kinetis Microcontrollers

What is the absolute maximum supply voltage for MK20 microcontroller ?

tiagoribeiro — Thu, 01 Feb 2018 16:28:03 GMT

Hello, the datasheet show the "Voltage and current operating requirements", "Voltage and current operating ratings" and 'all 5 V tolerant digital I/O pins are internally clamped to VSS through an ESD protection diode", but i did not find the absolute maximum voltage that could danify MK20.

Thank you

Re: What is the absolute maximum supply voltage for MK20 microcontroller ?

OilCastle — Fri, 09 Feb 2018 05:25:48 GMT

As I understand, you mean 'How much voltage can be possible to Vdd pin', right?

It said Vdd max is 3.8[V] in document "K20P144M120SF3.pdf"

I'm not sure what 'danify' means.

So I think MK20's absolute maximum voltage is 3.8[V]. - datasheet page 8

By the way, in my perspective, 5[V] tolerable means not acceptable, just can take.

IMO, Avoiding input voltage higher than Vdd is a better choice. - Just opinion :smileyhappy:

Good day //

Re: What is the absolute maximum supply voltage for MK20 microcontroller ?

Robin_Shen — Sun, 11 Feb 2018 06:51:02 GMT

The values in the “Voltage and current operating ratings” are the maximum operating conditions, so the maximum VDD is 3.8 V, otherwise you can damage(damnify) the MCU.

The actual recommended VDD is in the “Voltage and current operating requirements” table, this is from 1.71 V to 3.6 V.

Best Regards,

Robin

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