Error (175001) : Could not place pin - Error (175001) : Could not place pin Description You will receive this error message if you place 3.3V input signals into an I/O bank that is powered by 2.5V when targeting a Stratix® V device in the Quartus® II software version 12.0 and earlier. Resolution Download the Quartus II software patch 1.10 for version 11.1 SP1. Quartus II 11.1 SP1 patch 1.10 for Windows Quartus II 11.1 SP1 patch 1.10 for Linux Quartus II 11.1 SP1 patch 1.10 readMe file This is fixed in the Quartus II software version 12.1. Custom Fields values: ['novalue'] Troubleshooting 0 False ['novalue'] ['FPGA Dev Tools Quartus II Software'] 12.1 11.1.1 ['Stratix® V E FPGA', 'Stratix® V GS FPGA', 'Stratix® V GT FPGA', 'Stratix® V GX FPGA'] ['novalue'] ['novalue'] ['novalue']