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Is a battery required when performing ROM operation?

ID:
771
Issued:
Dec 25th, 2009
Updated:
May 17th, 2013

Is a battery required when performing ROM operation?

ANSWER
It is possible to operate even without using a battery, but the DT contents, on/off status of R and counter elapsed value that are all designated in the holding area will become indefinite when the power turns on. To preserve the status of these items after the power is turned off please use a battery.
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