| ??? 12/22/06 13:39 Read: times |
#130000 - use a proper supervisor chip Responding to: ???'s previous message |
1. i am using a crude RC ckt ...... as you said ....... what is the other ckt is it a RC connected to a Schmitt trigger
NOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO use a proper supervisor chip your problems is a result of Mickey Mouse approaches, do not replace them with something Goofy 2. is it possible for the crystal to work above its rated speed No, not a crystal. However, quite often it will work at 1/3 the rate because someone did not look out and get at 3rd overtone crystal. If what you mean is "can the uC run above its rated speed" the answer is: "no it, most likely, can not do so reliably and no amount of testing with a budget of less than $1M can prove relaibilitry" Erik |
| Topic | Author | Date |
| at 89S52 chip acting unreliably | 01/01/70 00:00 | |
| LCD reset | 01/01/70 00:00 | |
| Processor Reset | 01/01/70 00:00 | |
| at 89S52 chip acting unreliably | 01/01/70 00:00 | |
| no oscilloscope, use LED | 01/01/70 00:00 | |
| Proper Reset - not RC! | 01/01/70 00:00 | |
| make reset "hybrid" chip with opamp | 01/01/70 00:00 | |
| that is plain crazy | 01/01/70 00:00 | |
| allmost crazy | 01/01/70 00:00 | |
| Why take the risk? | 01/01/70 00:00 | |
| use a proper supervisor chip | 01/01/70 00:00 | |
| Thank you | 01/01/70 00:00 | |
| What a supervisor does | 01/01/70 00:00 | |
| Keyboard problem? | 01/01/70 00:00 | |
| Re. Keyboard problem? | 01/01/70 00:00 | |
| RC | 01/01/70 00:00 | |
evrything you wanted to ask about RC reset... | 01/01/70 00:00 |