Forum Discussion
Ian_Maw
New Contributor
8 months agoPower Rating Required for RZQ Resistor on Cyclone V SE
Hi, I need to include the 100R resistor we are using connected to RZQ pin D21 on the 484 ball package. Can anyone tell me what the maximum current I would realistically experience. If I just assume...
FvM
Super Contributor
8 months agoHi,
different FPGA families have calibration blocks with different properties. Cyclone 10 LP e.g. has separate Rup/Rdn and specifies that the applied voltage during calibration can be up to VCCIO (90 mW/100 ohm at highest VCCIO of 3V). But calibration completes in about 100 us, considering chip resistor time constant > 1 ms, there will be a huge power margin even for small 63 mW 0402. Cyclone V may apply lower maximal voltage to RZQ, but if not, I don't expect problems.
Ian_Maw
New Contributor
8 months agoThanks FvM.
I have used your answer for now but I will leave the question open for now.