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5V tolerance for the MCU module I/O ports?

vincent239955_stm1
Associate II
Posted on August 23, 2005 at 05:56

5V tolerance for the MCU module I/O ports?

3 REPLIES 3
vincent239955_stm1
Associate II
Posted on May 17, 2011 at 12:08

Hi,

I am considering to use uPSD3354DV-40U6 and was looking at the voltage tolerance of the I/O ports in the datasheet.

On page 13, only the Port 3 & 4 are 5V tolerant.

But on page 207, the Vih is 5.5V max. for Ports 0,1,2,3,4, XTAL1, RESET.

I need to find out whether Port 1 is 5V tolerant, since there is some conflicting statements in the datasheet.

Can anyone help confirm the actual ports which are 5V tolerant?

Thanks in advance.

Rgds,

Nick

joseph2399
Associate II
Posted on May 17, 2011 at 12:08

Port 1 is NOT 5V tolerant. Page 207 in the data sheet needs to be updated appropriately.

vincent239955_stm1
Associate II
Posted on May 17, 2011 at 12:08

Hi,

Thanks for the clarification.

:D