re how to drive an array of leds ptorre hardy u washington edu phil torre writes i have a project in mind that requires an array of leds that can be addressed individually by a microprocessor say x or so is there an lsi that is designed to drive an led array including ram to hold the array state or failing that some way of multiplexing the display so i don t have to latch a bit for each led using a discrete latch i want to avoid having a huge board covered with s if possible thanks in advance maxim makes a chip that does exactly what you want the max drives segment led displays with full decode or drives discrete led s with a wire serial interface the chips can also be cascaded to allow very large arrays i am working on a sign display using this part i ll have to post the contact info for maxim later it s at home there was a series of articles on this chip in the last couple of circuit cellar ink s mike harpe michael harpe programmer analyst information technology ormsby bldg mike hermes louisville edu university of louisville louisville ky he s not a man he s a remorseless eating machine the simpsons
