The dynamic driving interface circuit between SAA1064 serial I2C bus and LED display IC

Published:2012/10/8 22:06:00 Author:Ecco | Keyword: dynamic driving, interface circuit, serial I2C bus , LED display IC | From:SeekIC

Due to the SAA1064's dynamic scanning display depends on the the multiplexer swicthing data latch and time control circuit, the master does not have to intervene, and the dynamic work can best play SAA1064 function, so it is the most common working way. LED -bit numbers in figure and selected data sequence in data manipulation format are corresponding. CEXT is the clock oscillation capacitor which guarantees to work signal for dynamic driving. MX1, MX2 are the common electrode driving signal output terminals of monitor. When it is dynamic scanning, MX1 , MX2 's timing waveforms are shown in Figure as below.



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