Alinx AX301 User Manual page 20

digital tube has one more "point" than the seven-segment digital tube. The digital tube we
use is a 6-digit eight-segment digital tube, and the segment structure of the digital tube is
shown in Figure 15-1.
The digital tube we use is a common anode digital tube. When the pin corresponding to a
certain field is low, the corresponding field is lit. When the corresponding pin of a certain
field is high, the corresponding field is not bright.
Having said the above schematic, we look at the design on our development board.
The same segment of the six-digit digital tube is connected together. There are a total of
eight pins, and then six control signal pins are added. The total is 14 pins, as shown in
Figure 15-2.
DIG[0 ..7] is the corresponding digital tube A, B, C, D, E, F, G, H (ie, point DP);
SEL[0..5] are the six control pins of the six digital tubes, and also Active low, when the
control pin is low, the corresponding digital tube has a power supply voltage, so that the
digital tube can be lit, otherwise no matter how the digital tube segment changes, it can not
light the corresponding digital tube.
20 / 23
Http://www.alinx.com.cn
Figure 15-1
Figure 15-2
AX301 User Manual
20 / 23