Hi,
I have a board with two sets of 3 7 segment displays, one green and one red set. The sets run parallel on the SPI MOSI, so the same data enters both sets of drivers, then the latch is used to set the data. My problem is that if I run a write command to red, matching the data sheet timing diagrams the red display will properly update when the latch is set high, but my green display will update to random bits, and vice versa if I update the green display. I was under the impression from the data sheet that if the latch is set low the data registers would not update or change.
Thanks.