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Altera_Forum
Honored Contributor
Honored ContributorDEo NANO VCC noise
hi i have a de0 nano and in the gpio headers i am doing pwm at 50MHZ...it have 2 gpio headers of 40 pins .. and i notice that when they are the same ... in the VCC_SYS appear a noise almost 2 Vpp... ...
Altera_ForumHonored Contributor
Honored ContributorAre you using USB to powering DE0-Nano and how long cable?
When I check schematics there was only 10 uF in VCC_SYS. In 3.3V line there was 20 uF and about 16 pcs of 0.1 uF caps. Do you have measurement pics of noise?
