I would look for anything (registers) that sets different on POR as opposed to a cold boot, I have not looked, does this chip have ANSELH ? I just gotta hunch it is some little analog something . . .
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I would look for anything (registers) that sets different on POR as opposed to a cold boot, I have not looked, does this chip have ANSELH ? I just gotta hunch it is some little analog something . . .
If you do not believe in MAGIC, Consider how currency has value simply by printing it, and is then traded for real assets.
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Gold is the money of kings, silver is the money of gentlemen, barter is the money of peasants - but debt is the money of slaves
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There simply is no "Happy Spam" If you do it you will disappear from this forum.
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No, I have checked the datasheet again for 12C671. ThanksOriginally Posted by Joe S.
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WHY things get boring when they work just fine?
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It seems strange that you stated it works fine with one battery but not another. Is there any reason for using 12v, which will mean the regulator will need to drop 7v which would generate a fair amount of heat. I would make a simple supply for testing of 6v transformer, rectifier, and a couple of 2500uF electrolytic capacitors (or use one of those DC plug type power supplies, and do away with the rectifier ), Then use the 100 / 200 nf caps either side of the regulator. It's also worth mounting the regulator on a heatsink. This should give you a very stable, smooth 5V dc supply for testing.
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