| ??? 11/07/06 22:23 Read: times |
#127519 - a quick check and 5 possibilities Responding to: ???'s previous message |
1) your code reset it (error, you do not kno5) 2) whetever is connected hold the pin low 3) a short 4) a bum chip 5) something nonstandard (check the datasheet) Keep the processor reset if the pin is low with reset active, only 2), 3) and 4) apply, P3 reset to all ones. If the pin is high with reset applied then it will be 1) or 5) Erik |
| Topic | Author | Date |
| Using 89C51ED2, why P3^7 remains low always? | 01/01/70 00:00 | |
| a quick check and 5 possibilities | 01/01/70 00:00 | |
Keil | 01/01/70 00:00 |