TMS320F28335: What is the different between VDD1A18 with VDD2A18, and VSS1AGND with VSS2AGND?

F.F

Genius 3095 points

Part Number: TMS320F28335

Dear team:

I want to know What is the different between VDD1A18 with VDD2A18, and VSS1AGND with VSS2AGND?

Best regards

over 7 years ago

0 Peter Galicki over 7 years ago

TI__Expert 8105 points

Shanghai,

What document did you pull these reference names from? Could you attach a copy?

Thanks,
Peter

0 F.F over 7 years ago in reply to Peter Galicki

Genius 3095 points

Dear Peter:

They are pin's name of F28335, VDDxA18 is described as a ADC Analog Power Pin, But I want to know what is the different between VDD1A18 with VDD2A18?
I pull these reference names from the F28335 DATASHEET:
www.ti.com.cn/.../tms320f28335.pdf

Best Regards

0 F.F over 7 years ago in reply to Peter Galicki

Genius 3095 points

Hi Peter:

Look forward to your reply

Best Regards

0 Peter Galicki over 7 years ago in reply to F.F

TI__Expert 8105 points

Shanghai,

There are no differences between these two pairs from application point of view. Inside the chip, the 1 and 2 versions of analog power and ground go to different analog blocks, but externally (at the pins) they should be treated as one voltage and one ground. In the retrospect, they should have been named the same (without 1 and 2).

Regards,
Peter

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TMS320F28335: What is the different between VDD1A18 with VDD2A18, and VSS1AGND with VSS2AGND?