| ??? 12/20/04 06:23 Read: times |
#83481 - and some news Responding to: ???'s previous message |
i have initiated the input pins with a low value (i mean 0's),and everything is working perfectly now !, i haven't measured the voltage levels ,but the MCU detect the correct level WOW !
now i have a new question , why this invalid setting is workig ? currently i have no problem on other I/O pins , and tried over 3 other S51's than the first to make sure this is not a burned MCU fault. |
| Topic | Author | Date |
| invalid voltage on a pulled up/down Port | 01/01/70 00:00 | |
| replace s with c | 01/01/70 00:00 | |
| Thats not the solution. | 01/01/70 00:00 | |
| please follow the main problem | 01/01/70 00:00 | |
| and some news | 01/01/70 00:00 | |
| s51 is good | 01/01/70 00:00 | |
| Pullup/down | 01/01/70 00:00 | |
| Sorry for Echo. | 01/01/70 00:00 | |
| pull up/downs | 01/01/70 00:00 | |
| pullup+pulldown = potential-divider? | 01/01/70 00:00 | |
| Potential, potential divider? | 01/01/70 00:00 | |
| potential divider / where wires go | 01/01/70 00:00 | |
| blow it | 01/01/70 00:00 | |
| don't blowed it (atleast not untill now) | 01/01/70 00:00 | |
| where does the wires go | 01/01/70 00:00 | |
| To Erik and others | 01/01/70 00:00 | |
| This will not work with 'C51s | 01/01/70 00:00 | |
| Exactly | 01/01/70 00:00 | |
| just got the point :) | 01/01/70 00:00 | |
| And finally the problem solved! | 01/01/70 00:00 | |
| I meant ++hundreds of microampere++ | 01/01/70 00:00 | |
| Wrong question ! | 01/01/70 00:00 | |
| Negative Logic? | 01/01/70 00:00 | |
Yes, negative logic! | 01/01/70 00:00 |