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SM8578BV Datasheet Real-time Clock

Manufacturer: Nippon Precision Circuits Inc

Overview: SM8578BV Real-time Clock IC OVERVIEW The SM8578BV is a serial interface, real-time clock IC that uses a 32.768 kHz crystal oscillator for its reference timing. It prises second-counter to year-counter clock and calendar circuits that feature automatic leap-year adjustment, alarm and timer interrupt functions, as well as oscillator stop, timer reloading, and other detection functions. Data is transferred to and from an external controller using a 3-wire serial interface. It is available in pact 8-pin VSOP packages, making it ideal for use in all types of portable, hand-held equipment.

General Description

Number 1 2 3 4 5 6 Name INTN XTN XT VSS CE CLK I/O O O I – I I Function Timer interrupt/alarm interrupt output, determined by internal mode setting, or frequency output, with frequency value given in the frequency set register (N-channel open-dr

Key Features

  • I I PINOUT (Top view) I I I I I I I I I 1.6 to 5.5V wide operating voltage range 0.5µA (typ. ) current consumption (VDD = 3.0V, CE = Low) 3-wire serial interface control Day, day-of-week, hour, and minute alarm interrupt function 1/4096 seconds to 255 minutes presettable interval timer interrupt function Time update detection function Abnormal oscillation detection function Automatic leap-year adjustment function (Western and Japanese calendars) Oscillator capacitor CD built-in Molybdenum-g.

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SM8578BV Distributor