FAQ

Article Details

ID: 4771
Case Type: faq
Category: Implementation
Related To: Constraint-Pref Editor
Family: iCE40 UltraLite

Search Answer Database

Search Text Image

iCECube2 / iCE40 UltraLite: Is there a way to force a pin into pull down mode rather than a pull up for iCE40 devices using iCECube2 tool ? Is there a way to turn an input pin off by placing it into high Z for a time in iCE40 devices ?

Solution:
\t
The iCE40 pins have a programmable pull up only and not a pull down. So default pull down setting is not available in the iCECube2 Tool.
To turn the pull up off, you can go to constraint editor then externally connect a pull down.

Pin input tri-state is not supported by iCE40 I/O's. Only pin output tri-state is supported.

ABOUT LATTICE

SALES

SUPPORT

FOLLOW