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Why does standby current of SH7709S/SH7729R increase if RTC is unused?

Latest Updated:03/23/2009

Question:

Why does the standby current of SH7709S/SH7729R increase, when the RTC is unused?

Answer:

SH7709S/SH7729R has a on-chip circuit to decrease the consumption current in the standby mode. This circuit has a mechanism to run by using the clock generated by the RTC and it does not run, when the RTC is unused. So the consumption current in the standby mode increases, when not in use of the RTC.
Suitable Products
SH7729R
SH7709S