Profile：8 bit parallel to dual 7 segment display module suitable for breadboarding using the DM9368N
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8 bit parallel to dual 7 segment display module using DM9368N.
Not clocked and suitable for breadboarding as part of my SPAM-1 cpu build.
The DM9368N will work fine without any resistors as it has current limiting however it drives at up to 20mA, but I want to limit the current a bit more so it's not as power hungry.
To save space I'm using a single resistor on the common cathode of the display which is a bit of a compromise.
This approach means that the display brightness may flicker as the number of illuminated digits changes.
However, the better design of one resistor per segment takes up a lot more space. I'd probably want to use a set of SMD resistors in that case. I'm using DM9368N chips because I have them. There is also the MC14495P1 driver and it has an integrated resistor array that limits the current to a few mA I think. But I think the MC14495P1 is harder to get hold of an in any case I already have DM9368N.
|8||0.56 Seven Segment CC||LED1,LED2||0.56 SEVEN SEGMENT CC||2|