- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
Does anyone know which IO pins are associated with ground/vcc groups in a MAXII device for use as a LED driver?
Link Copied
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
You need to look at the max II's full pin-out file on the web to see this. The Pin/Pad function column shows you where the GNDIO pads (or VCCIO pads) are relative to IO pads. Any group of IO pads between any GNDIO pads constitute a current group that must not violate the current shown in AN 286 - table 3.
For each IO pad in the pin/pad function column, you'll have to scroll over in the same pin-out row to see the package pin it corresponds to for the package you are using. Many I/O pads may not bond out to the package pin.- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
One more thing to note - run the electro-migration current option in Quartus to ensure that you are not in violation of the current spec for each group. Put the electro-migration current assignment with a value of the static current the pin will drive for each pin driving LEDs or other resistive loads. This way, Quartus will check your pinout against the current density restrictions.
- Subscribe to RSS Feed
- Mark Topic as New
- Mark Topic as Read
- Float this Topic for Current User
- Bookmark
- Subscribe
- Printer Friendly Page