| ??? 08/13/08 01:39 Read: times |
#157447 - How high impedance Responding to: ???'s previous message |
The 8052 has pseudo-bi-directional ports. Try outputting 0 instead of FF. Pin that are outputting a high can power other chips through their protection diodes. |
| Topic | Author | Date |
| I can´t shut down the others IC, why? | 01/01/70 00:00 | |
| How high impedance | 01/01/70 00:00 | |
| 5V for pull-up resistors | 01/01/70 00:00 | |
| still not cutting power | 01/01/70 00:00 | |
16mA ? | 01/01/70 00:00 | |
| Not a valid assumption? | 01/01/70 00:00 | |
| Power coupling from active ICs to 'OFF' ICs ? | 01/01/70 00:00 |