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SM8577B Datasheet(PDF) 1 Page - Nippon Precision Circuits Inc |
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SM8577B Datasheet(HTML) 1 Page - Nippon Precision Circuits Inc |
1 / 10 page SM8577B NIPPON PRECISION CIRCUITS—1 NIPPON PRECISION CIRCUITS INC. Real-time Clock IC OVERVIEW The SM8577B is a CMOS serial-interface type real- time clock IC that operates at 32.768 kHz. It employs a 3-line serial interface to transfer time and date data. It incorporates a supply-voltage detect function to determine data validity/invalidity. It features an output interrupt with 32 kHz or 1 Hz output frequency. It is available in 8-pin SOPs. FEATURES s 2.5 to 5.5 V operating voltage range s 1.0 µA at 3.0 V (typ) current consumption s 3-line serial interface s 1.7 ± 0.3 V supply voltage detection threshold s Timer counters for second, minute, hour, day, day of the week, month, and year s Automatic leap-year calendar adjustment s 32.768 kHz and 1 Hz output interrupt selectable s Crystal oscillator circuit built-in (CD built-in) s 24-hour time mode s 8-pin SOP ORDERING INFOMATION PINOUT PACKAGE DIMENSIONS Unit: mm 8-pin SOP Device Package SM8577BS 8pin SOP CE DATA CLK FOUT VDD XTN XT VSS 1 4 5 8 0.4 0.1 1.27 5.2 0.3 0.15 + 0.10 − 0.05 0 to 10 ∞ |
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