zian
Newbie level 6
Hi,
Considering these settings :
Thx
Considering these settings :
- Cyclone 10 LP (or Cyclone II / Cyclone III / Cyclone IV)
- IO configured as Input LVTTL 3.3V (Vilmax=0.8V Vihmin=1.7V)
- Voltage maintained between 0.8V and 1.7V on this input (between 0V and 3.3V in fact)
- No CLK rising edge on the D-register on this IO signal during this period of voltage between 0.8V and 1.7V (elsewise a metastability will occur, than can be stopped with a double D-register, but will occur each time, so it may damage the input over the long-term ?)
- Weak Pull-up and/or clamp can be set or not (with normally no influence)
Thx