Cyclone® III devices are available in some packages that do not have an MSEL3 pin. These devices do support AS Fast POR when used with a VCCIO of 3.3V in I/O bank 1. They do not support the AS Fast POR at 2.5V or 3.0V VCCIO in I/O bank 1. The MSEL connections are different between devices that do and do not have an MSEL3 pin. Refer to Configuration, Design Security, and Remote System Upgrades in Cyclone III Devices (PDF) for more information.