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Real time clock module
SERIAL-INTERFACE REAL TIME CLOCK MODULE
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RTC - 4574 SA / JE / NB
• Built in frequency adjusted 32.768 kHz crystal unit. • Interface Type : Serial interface in 3 lines form. • Operating voltage range : 1.6 V to 5.5 V • Wide Timekeeper voltage range : 1.6 V to 5.5 V • Low backup current : 0.5 µA / 3 V ( Typ. ) • 32.768 kHz frequency output function : C-MOS output With Control Pin • The various functions include full calendar, alarm, timer. • Lead(Pb)-free : Contains high melting temperature type solder (Pb85 %) exempted by RoHS directive.
Actual size RTC-4574SA RTC-4574JE RTC-4574NB
Block diagram
32.768 kHz CONTROL LINE CLOCK and CALENDAR
Overview
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