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PGigl
Partner
192 Views

Can a Cyclone IV Low Voltage (1V core) be dropped in to an 1.2V socket

We are looking for EP4CE15F23I8N devices, but cannot find any.  Would a EP4CE15F23I8LN ​device work in this socket.

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4 Replies
YuanLi_S_Intel
Employee
11 Views

Hi Paul,

 

It would better if you could supply 1.0V instead of 1.2V as the core voltage is 1.0V.

https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/hb/cyclone-iv/cyiv-53001.pd... (Page 4)

 

Regards,

YL

PGigl
Partner
11 Views

That really does not answer the question. I believe the L option is only a speed binning of the devices, and the L devices are faster devices that can meet the timing specs even when operating at lower voltages. This is an issue of parts availability. The existing design uses non L parts, but L parts are available. ​

YuanLi_S_Intel
Employee
11 Views

Hi Paul,

 

Apologize for the misunderstanding, for your information, L parts means low voltage device and the device is designed to work with core voltage of 1.0V. Thus, it is recommended to have 1.0v supplied to it.

https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/hb/cyclone-iv/cyiv-51001.pd... (Page 12)

 

Regards,

YL

JDWYE1
Beginner
11 Views

We have accidentally done this (wired 1.2 V to VCCINT for Cyclone IV low voltage device) and this design has been running for 10 years.

 

I was looking on forums to see what this does to timing analysis - I believe it would help (fortunately). I am having problems meeting setup timing in TimeQuest right now.