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Explorer
Explorer
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Registered: ‎11-01-2015

What's the difference between -1L and -1LV?

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Hi All,

 

I found there were two similar part number:

xcku115-flvd1517-1L-i
xcku115-flvd1517-1LV-i

 

what's the difference between -1L and -1LV?

 

Thanks,

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Xilinx Employee
Xilinx Employee
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Registered: ‎06-30-2010
These are the same parts, the difference is the voltage as @florentw has clarified. The reason we have the -1L and -1LV in the tools is to differentiate between the VCCINT voltages as the performance will depend on the VCCINt voltage.
To get the reduce static power the VCCINT should be @ 0.72v but there will be a reduced performance as listed in the data sheet.
@ 0.85v you will improve performance but have no reduction in static power.
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Moderator
Moderator
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Registered: ‎11-09-2015

Hi @araongao2015,

 

The answer is in DS922 p17:

ku.JPG

 

It just depends on Vccint.

 

Regards,

 

Florent


Florent
Product Application Engineer - Xilinx Technical Support EMEA
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Xilinx Employee
Xilinx Employee
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Registered: ‎08-01-2008
refer product selection guide page number 4

https://www.xilinx.com/support/documentation/selection-guides/ultrascale-fpga-product-selection-guide.pdf
Thanks and Regards
Balkrishan
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Moderator
Moderator
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Registered: ‎11-09-2015

@balkris,

 

You link does not explain the L or LV... the L and V letter correspond to the package in the slide, not to "Low Voltage devices"...


Florent
Product Application Engineer - Xilinx Technical Support EMEA
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Xilinx Employee
Xilinx Employee
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Registered: ‎08-01-2008

 @florentw you can find difference in attached table . The only difference in in minimum and average operating voltage 

Thanks and Regards
Balkrishan
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tt.png
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Moderator
Moderator
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Registered: ‎11-09-2015

@balkris,

 

Yes, and this difference is coming from which Vccint they are operated at... as per my first message...


Florent
Product Application Engineer - Xilinx Technical Support EMEA
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Xilinx Employee
Xilinx Employee
4,555 Views
Registered: ‎06-30-2010
These are the same parts, the difference is the voltage as @florentw has clarified. The reason we have the -1L and -1LV in the tools is to differentiate between the VCCINT voltages as the performance will depend on the VCCINt voltage.
To get the reduce static power the VCCINT should be @ 0.72v but there will be a reduced performance as listed in the data sheet.
@ 0.85v you will improve performance but have no reduction in static power.
-------------------------------------------------------------------------
Don’t forget to reply, kudo, and accept as solution.
-------------------------------------------------------------------------

View solution in original post

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Explorer
Explorer
2,724 Views
Registered: ‎11-01-2015
Thanks, @florentw , @jheslip
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