On Apr 22, 4:00*am, Bob Minchin
wrote:
Andy Dingley wrote:
On Apr 20, 5:10 pm, Bob Minchin
*wrote:

I have found the answer herehttp://universalmeterservices.co.uk/store/images/5193.doc

Meter Memory

All the meters data is recorded in a Ferroelectric Random Access
Memory (FRAM) under the control of the microprocessor. *All the kWh
registers are stored in the FRAM and are updated every 1/100 th of a
kWh. *The FRAM is guaranteed for a minimum of 10,000,000,000 write
cycles

WTF? *Core memory?! *8-)

Yes I found that difficult to credit but I suppose it maybe used to meet
a possible regulatory requirement for N years retention with no power
connected??

Not quite core, but not completely unrelated and quite interesting
http://en.wikipedia.org/wiki/Ferroelectric_RAM