| ??? 08/08/10 18:00 Read: times |
#177889 - For many purposes, slow flanks are not a problem Responding to: ???'s previous message |
Slow edges are not normally a problem unless sent to an interrupt input.
When scanning a keyboard, you have to make sure that you have enough delays to have the signals stabilize before you read out the state. A different issue is that your signal cables will form radiating antennas. This can be reduced a bit by having series resistors on the signals to reduce the peak currents. Even better by having EMI filters. Exactly how long cables do you need? |
| Topic | Author | Date |
| Pulse degradation | 01/01/70 00:00 | |
| For many purposes, slow flanks are not a problem | 01/01/70 00:00 | |
| Slew-rate limiting | 01/01/70 00:00 | |
| Extending SiLabs TestBoard I/O | 01/01/70 00:00 | |
| Solved.. | 01/01/70 00:00 | |
| piggy back PCB? | 01/01/70 00:00 | |
| maybe not totally related | 01/01/70 00:00 | |
| Quite related and valuble | 01/01/70 00:00 | |
| Brief Heavy or Not | 01/01/70 00:00 | |
| Series resistors will do the trick! | 01/01/70 00:00 | |
| Pro vs Amatuers | 01/01/70 00:00 | |
| I'd like to rephrase | 01/01/70 00:00 | |
| Theory first, then lots of testing | 01/01/70 00:00 | |
| Environment... | 01/01/70 00:00 | |
! Amused | 01/01/70 00:00 |