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AR# 29369

Spartan 3 Generation - Are different Speed Grade/Temperature Range devices interchangeable?


Some Spartan-3A/3AN/3A DSP devices are dual marked with the Speed Grade/Temperature Range of "5C / 4I." Does this mean that all "4I" parts can be used as "5C"?


The 5C and 4I Speed Grade/Temperature Range part combinations can be dual marked as 5C/4I in some Spartan devices. Devices with the dual mark can be used as either -5C or -4I devices.

All Spartan devices with a single mark are guaranteed only for the marked speed grade and temperature range on that part. It is not generally true that "4I" is a replacement for "5C."

For temperature range and speed grade information, please see the device data sheets on www.xilinx.com.

AR# 29369
Date 12/15/2012
Status Active
Type General Article
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