RE: [uCsimm] What do you think of the uCSimm?

From: Jerry Waugh (
Date: Mon May 15 2000 - 09:11:01 EDT

> > Can anyone verify claims that they have used a 5V CS8900A-CQ instead of
> > a 3.3v CS8900A-CQ3 part. The spec sheet would suggest the recommended
> > operating range for the 5V CS8900A-CQ is 4.75V Min to 5.25V.
> >
> > Was this a substitution for short supply of the 3.3V Supply or is there
> > a charge pump on board?
> My uCSimm is using 5 volts to the power connector on the uGardner board.
> And, reading the schematic there is only one power pin on the uCsimm, and
> no charge-pumps other than the one associated with the Maximum 3221
> (RS-232).
All chips including the Ethernet are powered by 3.3V.

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