| ??? 03/24/07 10:10 Read: times |
#135756 - The scope probe is the clue!! Responding to: ???'s previous message |
I think your caps are way too small. It is more normal that the caps on crystals are three to four times the capacity you are using. The scope probe adds some picofarads when you touch it on and is an immediate clue that you probably need something larger then 5.6pF caps.
Mike Karas |
| Topic | Author | Date |
| AT89S8253 clocking problem | 01/01/70 00:00 | |
| The scope probe is the clue!! | 01/01/70 00:00 | |
| The tale of a 1000 fingers | 01/01/70 00:00 | |
| Alex did what the datasheet demands | 01/01/70 00:00 | |
| 1M across cap | 01/01/70 00:00 | |
| are you sure it is not 1/3? | 01/01/70 00:00 | |
| I had the same problem | 01/01/70 00:00 | |
| Works!! But is it a solution | 01/01/70 00:00 | |
| is it 1/4 or 1/3 | 01/01/70 00:00 | |
| Speed unstable | 01/01/70 00:00 | |
| May be clock amplitude... | 01/01/70 00:00 | |
| Crystal frequency | 01/01/70 00:00 | |
| An interesting article... | 01/01/70 00:00 | |
| Use an external oscillator! | 01/01/70 00:00 | |
wait a year or more for the errata | 01/01/70 00:00 |