M5450B7 - 34output LED driver

Jun 22, 2007 0 Replies

Hi,



DataSheet: http://www.ortodoxism.ro/datasheets/SGSThomsonMicroelectronics/mXqrr.pdf



I have a few of these and is trying to get them to work, sofar with no success.



I have made a voltage divider with a 300ohm resistor and sent that to brightness control. Added a 0.47uf cap to the divider, and the +/- legs of the chip. Added +/- where needed (pin 1-20) Connected the data and clock to a picaxe. Not sure about enable if it should be low or high, but have tried both.



With enable low there is a small change when the picaxe turn off a input, but theres only


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