We have detected your current browser version is not the latest one. Xilinx.com uses the latest web technologies to bring you the best online experience possible. Please upgrade to a Xilinx.com supported browser:Chrome, Firefox, Internet Explorer 11, Safari. Thank you!

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 Created 10/28/2007
Last Updated 12/15/2012
Status Active
Type General Article