RTC4574JE

Real time clock module SERIAL-INTERFACE REAL TIME CLOCK MODULE www.DataSheet4U.com 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 32.768 kHz frequency output function FOUT pin output (C-MOS output ), CL=30 pF Output frequency selectable from1/30 Hz to 32.768 kHz (32 Values) OSC DIVIDER FOUT FCON / TIRQ / AIRQ DATA CLK CE 1 CE 0 Timer function OUTPUT CONTROLLER INTERRUPTS CONTROLLER BUS INTERFACE CIRCUIT SHIFT REGISTER ALARM REGISTER CONTROL REGISTER TIMER REGISTER Timer function can be set upbetween 1/4096 second and 255 minutes. It is recorded automatic to TF-bit at the time of event occurrence,and possible to output with /TIRQ pin output (open-drain output). Selectable one time mode or repeat mode. Alarm function Alarm function can be set to any combination of day of week, hour, or minute. It is recorded automatic to AF-bit at the time of event occurrence,and possible to output with /AIRQ...