| ??? 03/20/05 05:31 Read: times |
#90035 - Problems with Port 0 |
I am interfacing an lcd with Atmel 89c51 using port 0. As is the case port 0 needs external pull up resistors to pull the output to high or low. The problem is that the lcd doesn't work when pull ups are connected. The output at the port is neither high nor low, it give an intermediate value of 1.2-2.5 volts. There is no problem with the pull up resistors and the connections are perfect.
Anyone who can help me find a solution is welcome. Please e-mail me the solution at: jay.p.shah@indiatimes.com |
| Topic | Author | Date |
| Problems with Port 0 | 01/01/70 00:00 | |
| Pull-ups too high - use another port | 01/01/70 00:00 | |
| Pullups | 01/01/70 00:00 | |
| To jay! | 01/01/70 00:00 | |
| Pull-ups, used at outputs or inputs? | 01/01/70 00:00 | |
re:Pull-ups, used at outputs or inputs? | 01/01/70 00:00 |