| ??? 04/12/05 19:47 Read: times |
#91464 - Seven Segment Displays Driven By 8051 |
I have six large (4"x2") seven segment displays that I would like to display info on from the 8051. They are common cathode type Displays. I have successfully muxed these using the 74LS373 so that I can use one Port to control all six but am having trouble actually hooking them up. They require a substantial amount of current to work. I can drive them with an outboard 12V power supply that should supply enough current but cannot figure out how to wire them. I thought that if I sent 12V to each of the two common cathodes on each display, then hooked up the outputs of eachj of the six '373 to a different display I could get them to turn on/off this way. Essentially, the 80-51 would create a ground for the displays when the pins on the Port were set low. It does not appear to be working. Am I missing something? |
| Topic | Author | Date |
| Seven Segment Displays Driven By 8051 | 01/01/70 00:00 | |
| Maxim part | 01/01/70 00:00 | |
| Integrated MUX drivers are 5V only | 01/01/70 00:00 | |
| Confused | 01/01/70 00:00 | |
| Multiplexing 7-segment LED displays | 01/01/70 00:00 | |
| rate of multiplex | 01/01/70 00:00 | |
| Yes, of course, | 01/01/70 00:00 | |
| Further Clarification of My Project | 01/01/70 00:00 | |
| nobody can answer that | 01/01/70 00:00 | |
| No 373s! | 01/01/70 00:00 | |
| Ohhh! Pretty NM | 01/01/70 00:00 | |
| OK | 01/01/70 00:00 | |
| MAX7219 | 01/01/70 00:00 | |
| Like this | 01/01/70 00:00 | |
| current? | 01/01/70 00:00 | |
| LSD23255-10 Display Specs | 01/01/70 00:00 | |
| data sheet? | 01/01/70 00:00 | |
| GOOGLE!!! | 01/01/70 00:00 | |
| Multiplexing | 01/01/70 00:00 | |
| Drivers | 01/01/70 00:00 | |
| 74hc595 alt. | 01/01/70 00:00 | |
| TPIC6C595 by TI? | 01/01/70 00:00 | |
Thanks. | 01/01/70 00:00 |