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# XMC4400: GPIO and VAREF voltage values

Level 4
Level 4

Hi,

What is GPIO(General Purpose I/O Ports) high level in voltage? (?? V)

What is the typical voltage value at VAREF (using VADC). (?? V)

1 Solution

# Re: XMC4400: GPIO and VAREF voltage values

Moderator
Moderator

Hi @jsmith678x ,

The LED pins of the XMC 4400 kit below to the A2 pad as shown in the below figure

The voltage is dependent on the current drawn as shown in the below table and we guarantee only the minimum voltage.

Regards,

Alakananda
5 Replies

# Re: XMC4400: GPIO and VAREF voltage values

Moderator
Moderator

Hi @jsmith678x ,

Are you asking about the absolute maximum voltage the pin can tolerate or are you asking about the input voltage it can work with ?

>>You can refer to the below attached images for more details

Additionally regarding Vref check the below table.

All this information is available in the device datasheet.

Regards,

Alakananda

# Re: XMC4400: GPIO and VAREF voltage values

Level 4
Level 4

GPIO: When I make a simple LED blinking circuit and when I connect port pin to scope what will be the maximum voltage? (typically, please write exact numbers instead of tables)

ADC: What will we the typically voltage that can I connect to VAREF? (typically, please write exact numbers instead of tables)

# Re: XMC4400: GPIO and VAREF voltage values

Moderator
Moderator

Hi @jsmith678x ,

GPIO: When I make a simple LED blinking circuit and when I connect port pin to scope what will be the maximum voltage? (typically, please write exact numbers instead of tables)

>>The maximum voltage depends on the LED sinking or sourcing current, from the above table you can find the minimum range of voltage depending upon the LED drive modes.

ADC: What will we the typically voltage that can I connect to VAREF? (typically, please write exact numbers instead of tables)

>>As you see from the above table we have the calculation for the min and max Varef which needs to be calculated depending on your application.

You can find all these information from the below datasheet.

https://www.infineon.com/dgdl/Infineon-XMC4400-DS-v01_03-EN.pdf?fileId=5546d462696dbf120169817958553...

Regards,

Alakananda

# Re: XMC4400: GPIO and VAREF voltage values

Level 4
Level 4

Our application is XMC4400 Platform2Go

https://www.infineon.com/cms/en/product/evaluation-boards/kit_xmc_plt2go_xmc4400/

Are there exact values in this case?

# Re: XMC4400: GPIO and VAREF voltage values

Moderator
Moderator

Hi @jsmith678x ,

The LED pins of the XMC 4400 kit below to the A2 pad as shown in the below figure

The voltage is dependent on the current drawn as shown in the below table and we guarantee only the minimum voltage.

Regards,

Alakananda