STM32G4 I/O input high level voltage

2 replies
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Dear Sir's,

what is the minimum high level threshold voltage

for a non FT_C port? Is it 0.7xVDD or 0.49xVDD+0.26?

Regards,

Jochen

STM32G4 series

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KDJEM.1Best answer

ST Technical Moderator

Hello @JR1 and welcome to the community :),

These 2 formulas are correct VIH = 0.7x VDD is the threshold tested in production and VIH=0.49xVDD+0.3V is the threshold guaranteed by design as mentioned in note 3.

This behavior is mentioned in data sheet figure 25: in blue the threshold level tested in production and in green the threshold level guaranteed by design.

May this discussion can help you.

Kaouthar

To give better visibility on the answered topics, please click on "Best answer" on the reply which solved your issue or answered your question.

Andrew Neil

Super User

What does the note (3) tell you?

A complex system that works is invariably found to have evolved from a simple system that worked.A complex system designed from scratch never works and cannot be patched up to make it work.