IMPX - When Will the Dead Money Awaken? Message Board

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Technology Stocks : IMPX - When Will the Dead Money Awaken?

IMPX 6.210

+13.3%

Oct 22 3:59 PM EST

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To: Sheldon C. who wrote (365)	6/2/1998 9:51:00 AM
From: slob	Read Replies (1) of 532

Sheldon, Looks like a good product. This is a typical linear catalog product. You connect it to the RESET pin of a microcontroller and it ensures that the supply voltage is sufficient for the microcontroller to run correctly before it is released from RESET. These are tricky parts to do especially if you try to do them on the microcontroller itself. The problem is that the RESET signal needs to cope with very slow ramping power supplies, contact bounce conditions and track very fast glitches on the supply that can corrupt the internal SRAM on the microcontroller. All this and it should have an active power of under 1 microamp (IMPX is quoting < 15 micro amps). Another problem is designing the RESET delay circuit (140 milli sec) this is far to long to do with an internal RC network and needs to be reset itself if any exception condition is found. Usually you use a counter with an RC oscillator and a watchdog circuit on the back of the counter chain. Anyway this is the sort of product that I like to see IMPX working on. Slob

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