[sdiy] uPD444 RAM battery power

[Adam Inglis]

This CR-8000 I'm working on uses this CMOS static RAM. The machine has  
a battery compartment for 3 x 1.5 volts AA batteries to retain data.
I would like to replace this with a CR2032 lithium battery or similar  
to make space for mods.
The datasheet for the RAM says data retention voltage min = 2 volts,  
current 0.01 microA.
The battery power line has diode protection from reverse voltage via  
the 5 volt line.

Any foreseen problems doing that?

cheers
Adam