About the power sequence of VDD, VDD (PVDD) and VDD (TVDD)

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About the power sequence of VDD, VDD (PVDD) and VDD (TVDD)

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yasushihasegawa
Contributor III

Dear All,

We use CLRC663, MFRC631, MFRC630, SLRC610.
Please tell me the power sequence of VDD, VDD(PVDD) and VDD(TVDD).

The data sheet has the following description.
     VDD(PVDD) must always be the same or lower voltage than VDD.
By the above, I understood the sequence of VDD and VDD (PVDD).

However, VDD (TVDD) does not describe constraints with VDD.

Question:

Is it OK to supply power to VDD (TVDD) when VDD power is supplied or when power is not supplied?

Best Regards,
Yasushi Hasegawa

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weidong_sun
NXP TechSupport
NXP TechSupport

Hello Yasushi,

Sorry for my late reply!

Generally, PVDD & VDD are the same power, so they are the same time.

TVDD can be supplied late.

that is : PVDD(VDD
Simultaneously)--->TVDD


Have a great day,

Weidong sun

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weidong_sun
NXP TechSupport
NXP TechSupport

Hello Yasushi,

Sorry for my late reply!

Generally, PVDD & VDD are the same power, so they are the same time.

TVDD can be supplied late.

that is : PVDD(VDD
Simultaneously)--->TVDD


Have a great day,

Weidong sun

-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
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yasushihasegawa
Contributor III

Dear Wigros Sun,

Thank you for your answer.

Best Regards,

Yasushi Hasegawa

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weidong_sun
NXP TechSupport
NXP TechSupport

Hello Yasushi,

    See the diagram, please!

pastedImage_1.png

I collected it, hope it can help you!

Best Regards,

Weidong

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yasushihasegawa
Contributor III

Dear Wigros,

 

I'm sorry to bother you when you are busy, but can you answer about the following?

=============

However, what I want to know is the Power sequence, that is, the order.

I'm sorry to bother you, but please let me ask you the following question again.
>Is it OK to supply power to VDD (TVDD) when VDD power is supplied or when power is not supplied?

 

Best Regards,

Yasushi Hasegawa

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yasushihasegawa
Contributor III

Dear Wigros,

Thank you for your prompt response.

However, what I want to know is the Power sequence, that is, the order.

I'm sorry to bother you, but please let me ask you the following question again.
>Is it OK to supply power to VDD (TVDD) when VDD power is supplied or when power is not supplied?

Best Regards,

Yasushi Hasegawa

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