Is the Quartus II software generated .pin file correct in stating that VCCBAT must be connected to 1.2V for Cyclone V devices? - Is the Quartus II software generated .pin file correct in stating that VCCBAT must be connected to 1.2V for Cyclone V devices? Description When you compile a Cyclone® V design, the Quartus® II software generated .pin file states VCCBAT should be connected to a 1.2V power supply. This is only one of multiple supported voltages if you are using the design security feature with volatile key. Allowable voltages for VCCBAT are 1.2V ~ 3.0V from a battery power supply. If you do not use the volatile key (either you use the non-volatile key or you do not use the design security feature), you should connect VCCBAT to a 1.5V, 2.5V or 3.0V power supply on your board. You should not leave VCCBAT floating or connect to GND because the device will not exit power-on reset (POR) if VCCBAT stays at logic LOW. Resolution Ensure VCCBAT is connected to the correct power supply. Follow the Cyclone V Device Family Pin Connection Guidelines (PDF) . Related Articles Does VCCBAT have to be connected to the voltage shown in the compilation report or .pin file generated by the Quartus II software? Custom Fields values: ['novalue'] Troubleshooting novalue False ['novalue'] ['novalue'] novalue novalue ['Cyclone® V E FPGA', 'Cyclone® V GT FPGA', 'Cyclone® V GX FPGA', 'Cyclone® V SE FPGA', 'Cyclone® V ST FPGA', 'Cyclone® V SX FPGA'] ['novalue'] ['novalue'] ['novalue']