??? 08/14/07 05:22 Read: times |
#143241 - ... and again... Responding to: ???'s previous message |
Richard,
You are at least as quick in your conclusions as per my engineering-o-troubleshooting methods as I am in guessing your background (which, btw. would be interesting to know, at least to the extent relevant to this discussion - i.e. what is the typical power supply of the equipment of your design, and whether it runs 24/7 - we already know that you are using the RC reset typically). What I present as an anecdote here in fact required a lot of work to discover the root case of the problem (and as I already told here, I presented only a fraction of the problems I and/or my colleagues came accross). Just recall my stories - how do you think we discovered the problem with working '51 and dying peripheral at low VCC, resulting in - in fact, from the viewpoint of the mcu, correct - extraneous input to be accepted and stored in the NVRAM? And, how do you think, we discovered the problem with short reset pulse causing the '51 program starting at address 112h? Do you really believe this is a result of a handwaving approach? I never said the problems were not related to insufficient or otherwise suspicios power. Contrary - often this was the root case, indeed. However, as I said many many times, I find it ridiculous to design around a perfect power supply, while this more complicated and expensive than the reset IC - and, in many cases, it won't help, contrary to the reset IC. Richard, please stop trying to find a problem where there is none. Please accept the facts. Jan |