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AMorá.1
AMorá.1
Associate
September 16, 2021
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Whats the difference between a STM32L4P5VGT6 and a STM32L4P5VGT6P? Thank you.

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Bruno_STBest answer
ST Employee
September 16, 2021

Hello @Alonso Morán​ 

Please check datasheet of the product, section 'Ordering information' (nearly last page of datasheet).

P = Dedicated pinout supporting external SMPS. Basically 2 pins of the package named 'VDD12' can be used to supply the internal core voltage with an external power supply (usually an SMPS). If you intend to not use this feature but use this package, you can leave the pins 'not connected' and it will behave like a STM32L4P5VGT6.

For more information about external SMPS connections on VDD12, you can read AN4621 .

Bruno

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TDK
TDK
September 16, 2021

The latter has dedicated VDD12 pins for supplying the core voltage directly. These pins are GPIOs on the other version.

0693W00000DnQsxQAF.png 

LQFP48 package shown here, but it's the same idea on the others:

0693W00000DnQvDQAV.png

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Bruno_STBest answer
ST Employee
September 16, 2021

Hello @Alonso Morán​ 

Please check datasheet of the product, section 'Ordering information' (nearly last page of datasheet).

P = Dedicated pinout supporting external SMPS. Basically 2 pins of the package named 'VDD12' can be used to supply the internal core voltage with an external power supply (usually an SMPS). If you intend to not use this feature but use this package, you can leave the pins 'not connected' and it will behave like a STM32L4P5VGT6.

For more information about external SMPS connections on VDD12, you can read AN4621 .

Bruno

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Bruno_ST
ST Employee
September 16, 2021

Sorry i meant AN4978

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AMorá.1
AMorá.1Author
Associate
September 16, 2021

I really appreciate it.

Thank you very much for your support.

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