| ??? 05/16/05 09:01 Read: times |
#93479 - typical pull up for P3? |
when i use pull ups greater(>=) then 10K the system with AT89S8252 acts unpredictable (sometimes it does not register 0-level triggered by manual switch). Now i am working with weaker pull ups(1K), and it is working fine. Just wanted to know what is the typical( or recommended) value of the pull ups at PORT3 configured as INPUT?.
Thanks, Marjan |
| Topic | Author | Date |
| typical pull up for P3? | 01/01/70 00:00 | |
| 1K to 2.2K are good values | 01/01/70 00:00 | |
| Mechanical switches need minimum current | 01/01/70 00:00 | |
| ??? | 01/01/70 00:00 | |
| Dry loads | 01/01/70 00:00 | |
| P3 don't need pull ups. | 01/01/70 00:00 | |
| Misunderstanding! | 01/01/70 00:00 | |
| 1K is stronger not weaker. | 01/01/70 00:00 | |
| Switch Configuration !!! | 01/01/70 00:00 | |
| Thanx | 01/01/70 00:00 | |
| Why 1k? | 01/01/70 00:00 | |
because | 01/01/70 00:00 | |
| A Correction! | 01/01/70 00:00 |