| ??? 02/14/05 22:29 Read: times |
#87444 - something smells Responding to: ???'s previous message |
when the input is logic 1, and is pulled to logic 0 the interrupt does not fire until the input reverts back to logic 1.
ie on the low to high transition rather than the, high to low transition as indicated in the documentation. I have seen strange errata from Atmel, but that one I do not believe could slip through. The only cause for this I can visualize is a defective chip see "the bible" ch 3 pp 16. Somewhere in the back of my head is that I have seen this before as the result of a static discharge - no absolute, but I think so. Erik |
| Topic | Author | Date |
| Ext Interrupt - Transition Activated | 01/01/70 00:00 | |
| Turn a falling edge into a rising edge? | 01/01/70 00:00 | |
| Did you read the | 01/01/70 00:00 | |
| both interrupts possible | 01/01/70 00:00 | |
| I use this | 01/01/70 00:00 | |
| I use PCA | 01/01/70 00:00 | |
| not on AT89C2051 ! | 01/01/70 00:00 | |
| who forces him | 01/01/70 00:00 | |
| Who forces? The circumstances. | 01/01/70 00:00 | |
| New Zealand | 01/01/70 00:00 | |
| Yes, the perspective! | 01/01/70 00:00 | |
| because | 01/01/70 00:00 | |
| I also use AT89C51RC2 | 01/01/70 00:00 | |
| little boy | 01/01/70 00:00 | |
| That's why not | 01/01/70 00:00 | |
glady | 01/01/70 00:00 | |
| Don't underestimate the good old USA | 01/01/70 00:00 | |
| two views | 01/01/70 00:00 | |
| Two academic questions | 01/01/70 00:00 | |
| suggestions | 01/01/70 00:00 | |
| Transition reversed from the bible | 01/01/70 00:00 | |
| language | 01/01/70 00:00 | |
| clarification on the language | 01/01/70 00:00 | |
| something smells | 01/01/70 00:00 | |
| Defective Chip | 01/01/70 00:00 | |
| we have all been there | 01/01/70 00:00 | |
| OK - I'll have a sleep | 01/01/70 00:00 | |
| glitchy? | 01/01/70 00:00 |