Xilinx update Spartan3AN device!

I found the release date of some XC3S50AN is 2014 or 2016! and Impact can’t download to In-System Flash, show me “SPI not found”…
But the older 2010’s IC is OK. After some searching…

Xilinx manufacturing Spartan3AN devices, not discontinued! And the flash density is changed.

https://www.xilinx.com/support/answers/59572.html

http://www.xilinx.com/support/documentation/customer_notices/xcn14003.pdf

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