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PSoC 4 MCU

New Contributor

Hi all,

I will use CY8C4247LTI-L475.

I have a few questions about VBUS of CY8C4247LTI-L475.

[1]

Could you tell me about the difference between Vusb_3.3(SID322) and Vusb_3(SID323)?

I don't know "Functional operation only".

[2]

The max voltage of Vusb_5(SID321) is described as 5.5V in data sheet.

Is this 5.5V the absolute maximum ratings?

(Depending on the battery, 6V may be applied to VBUS.)

[3]

The max voltage of Vusb_3.3(SID322) is described as 3.6V in data sheet.

Is this 3.6V the absolute maximum ratings?

(Depending on the battery, 4.2V may be applied to VBUS.)

Best regards.

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Moderator
Moderator

Regarding [2] and [3], you have to follow these ranges.

PSoCR 4: PSoC 4200L Datasheet

https://www.cypress.com/file/222206/download

pastedImage_2.png

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4 Replies
Moderator
Moderator

Regarding [2] and [3], you have to follow these ranges.

PSoCR 4: PSoC 4200L Datasheet

https://www.cypress.com/file/222206/download

pastedImage_2.png

View solution in original post

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New Contributor

Hello TakashiM_61-san,

I understand about [2] and [3].

Thanks,

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New Contributor

Hi,

I'd like to confirm about the difference between Vusb_3.3(SID322) and Vusb_3(SID323).
I think that
it is designed to meet the specifications of Vusb_3.3 in general.

Is my idea correct?

If my idea correct, what is the purpose of this specification(Vusb_3)?

Best regards.

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Moderator
Moderator

Apologize for late response...

Regarding the remaining quesition #1, “Functional operation only” describing in Vusb_3 would mean that any DC or AC specifications for the USB block would not be guaranteed.

So Vusb_3.3 and Vusb_3 are two different defined ranges for the same supply.  The first defines the range for full spec compliance, the second defines a larger “functional only” range.  It is the same as saying that “the USB connection might work”.

Thank you.

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