RTC-8564NB module equivalent, i2c-bus interface real time clock module.
* Operating in wide voltage range from 1.8 V to 5.5 V,
and in wide range of clock voltage from 1.0 V to 5.5 V. (RTC-8564JE/NB : -20°C to +70°C / RX-8564CF:+25°C)
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