Is Spartan-3 100% pin- and bitstream-compatible with Spartan-3L?
Yes, the Spartan-3 devices are drop-in replacements for the Spartan-3L devices. They are 100% pin and bitstream compatible. This provides you the ability to replace the now obsolete Spartan-3L with Spartan-3 devices.
To view the Spartan-3L Product Discontinuance Notice, see :