| ??? 04/17/03 12:07 Read: times |
#43607 - RE: pullups Responding to: ???'s previous message |
I was planning on using my AT89C52 port 3, which doesn't require pull ups to drive LED's
Any '51 I have seen has much more pull down than pull-up on port 3. Driving low current LEDS directly should be done with common anode LEDs. Erik |
| Topic | Author | Date |
| How to get data from mouse PS2 to MCS-51 | 01/01/70 00:00 | |
| RE: How to get data from mouse PS2 to MCS-51 | 01/01/70 00:00 | |
| RE: How to get data from mouse PS2 to MCS-51 | 01/01/70 00:00 | |
| PS2 to MCS-51 - Chris | 01/01/70 00:00 | |
| RE: PS2 to MCS-51 - Chris | 01/01/70 00:00 | |
| RE: PS2 to MCS-51 - Chris | 01/01/70 00:00 | |
| RE: PS2 to MCS-51 - Chris | 01/01/70 00:00 | |
| RE: pullups | 01/01/70 00:00 | |
| RE: pullups | 01/01/70 00:00 | |
| RE: pullups | 01/01/70 00:00 | |
| RE: pullups - Erik, | 01/01/70 00:00 | |
| RE: pullups - Erik, | 01/01/70 00:00 | |
RE: pullups - Erik, | 01/01/70 00:00 |