S32k144 VDD/VDDA

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1,506件の閲覧回数
lohrsistemas
Contributor IV

Hello,

Can I put:

VDD1,VDD2,VDD3,VDD4 in 3V3

and

VDDA,VREFH in 5V?

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victorjimenez
NXP TechSupport
NXP TechSupport

Hello,


Is not possible to achieve what you mentioned. VDD1, VDD2, VDD3, VDD4, and VDDA must be shorted to a common source on PCB. And VREFH should always be equal to or less than VDDA + 0.1 V and VDD + 0.1 V.

So, all VDDx voltages should be equal and if VDDx is 3.3V, VREFH must not exceed 3.4V.


Have a great day,
TIC

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1,409件の閲覧回数
victorjimenez
NXP TechSupport
NXP TechSupport

Hello,


Is not possible to achieve what you mentioned. VDD1, VDD2, VDD3, VDD4, and VDDA must be shorted to a common source on PCB. And VREFH should always be equal to or less than VDDA + 0.1 V and VDD + 0.1 V.

So, all VDDx voltages should be equal and if VDDx is 3.3V, VREFH must not exceed 3.4V.


Have a great day,
TIC

-------------------------------------------------------------------------------
Note:
- If this post answers your question, please click the "Mark Correct" button. Thank you!

- We are following threads for 7 weeks after the last post, later replies are ignored
Please open a new thread and refer to the closed one, if you have a related question at a later point in time.
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