http://www.cmiyc.com/blog/2009/04/05/tlc5940-painter-pcb/ Projects and Ideas by J. Lewis Sat, 21 Jan 2012 21:30:11 +0000 hourly 1 http://wordpress.org/?v=3.3.1 http://www.cmiyc.com/blog/2009/04/05/tlc5940-painter-pcb/comment-page-1/#comment-9937 James Fri, 29 Jul 2011 22:35:29 +0000 http://www.cmiyc.com/?p=129#comment-9937 The pin is broken out to the headers so that it can be controlled by a microprocessor. Instead of letting it float, I pull it HIGH. The microprocessor can still pull it low to enable the outputs. If nothing is connected to the Pin's headers then it pulls HIGH to prevent flickering. The pin is broken out to the headers so that it can be controlled by a microprocessor. Instead of letting it float, I pull it HIGH. The microprocessor can still pull it low to enable the outputs. If nothing is connected to the Pin’s headers then it pulls HIGH to prevent flickering.

]]> http://www.cmiyc.com/blog/2009/04/05/tlc5940-painter-pcb/comment-page-1/#comment-9936 Jeff Fri, 29 Jul 2011 20:13:52 +0000 http://www.cmiyc.com/?p=129#comment-9936 Just about finished designing a board based on this chip, using your schematic for reference. How did that pullup on the BLANK line work out? the datasheet says BLANK should be LOW to keep outputs on, so I'm confused as to why you are pulling it high. Just about finished designing a board based on this chip, using your schematic for reference. How did that pullup on the BLANK line work out? the datasheet says BLANK should be LOW to keep outputs on, so I’m confused as to why you are pulling it high.

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