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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.
Solved! Go to Solution.
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Regarding [2] and [3], you have to follow these ranges.
PSoCR 4: PSoC 4200L Datasheet
https://www.cypress.com/file/222206/download
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Regarding [2] and [3], you have to follow these ranges.
PSoCR 4: PSoC 4200L Datasheet
https://www.cypress.com/file/222206/download
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Hello TakashiM_61-san,
I understand about [2] and [3].
Thanks,
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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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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.