iCE40 LP: How to calculate the internal pull up resistor value of an iCE40 LP 1K device?SupportArticlePage830f2a80-95f8-4d4d-9dad-bbcfa4e14f8cFAQ/Support/AnswerDatabase/4/3/2/4325https://edge.sitecorecloud.io/latticesemi9e32-latticesemi06bb-prod9ecc-d341/media/Project/Lattice/LatticeSemi/Images/SearchThumbnails/FAQ.png?sc_lang=enCurrent rating for VCCIO 3.3 from data sheet (Min 11uA Max128uA) For LVCMOS33 -> Vih(min) is 2.0V Hence Rp = 3.3V - 2.0V / (11uA) = 18.18K Ohm For LVCMOS33 -> Vih(min) is 2.0V Hence Rp = 3.3V - 2.0V / (128uA) = 10.15K Ohm
