Ecu nvram chip

[LincsCerb]

Hi does anyone no where I can source a new nvram ecu chip from part no ds1230ab-200-ind. It's the one that holds the adaptive values and has an internal battery.
I'm thinking my battery must of failed as when I try to examine the adaptive data without the engine running (which I believe is possible) it tells me no data available. If I start the car and run it for a while then the adaptive tables suddenly become available but will be lost again by the following day.
Any help much appreciated.

[LincsCerb]

I was being to strict with my search then looking for the exact same chip, because it looks like there's a few different speeds to choose from. Mine is 200ns, power is 70ns and RS have a range of different speeds to choose from.
So I presume they are all compatible then.

[LincsCerb]

Ok that's good to know.
All the ones available are quicker than 200ns so I'll order one and see how it goes.