Cyclone 5 SoC FPGA Bank Supply Prerequisite

Hi Brian,

The Cyclone® V Pin Connection Guidelines state: “Connect these pins (VCCIO) to a power supply” Your test results align with the expectations, where when you left VCCIO floating, it can cause programming failure. For best and safest device hardware configuration, always connect VCCIO to the correct supply for every I/O bank, including BANK 5A/5B.

Reference: Cyclone® V GX, GT, E, SX, ST and SE Device Family Pin Connection Guidelines

Regards,
Aqid