DS12885N

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DS12885N application field and working principle

The DS12885N is a Real Time Clock (RTC) that is commonly used in various embedded systems. It is a commonly used clock/timing device primarily used for applications such as keeping track of time and dates, clock based data logging, providing time-based triggers, and providing system time and date alarms.

The DS12885N uses a battery-backed, integrated circuit (IC) to maintain accurate time and date and is available in a variety of formats, including horizontal and vertical versions. The device comes with a 32 kHz crystal, which is housed in the unit, making it highly reliable for use in embedded and real-time applications.

The DS12885N features an integrated voltage regulator, which allows the clock to remain accurately powered and uses a 32.768 kHz quartz crystal as the time base. This crystal provides extremely accurate timekeeping, with an accuracy of +0.0075 seconds per day.

The DS12885N integrates a battery backed-up, integrated circuit (IC) for maintaining the clock/calendar information. The battery allows the clock to keep running without the need for an external power source, even when the main power supply is turned off, which makes it ideal for applications such as data logging.

An RTC is typically used in most embedded systems such as industrial automation, point-of-sale (POS) systems, home automation, and security systems. DS12885N is often used in embedded systems, as the device is designed to be highly reliable and accurate.

The DS12885N also contains a series of interrupt pins which can trigger an interrupt when certain specific events occur such as a time or date alarm. These interrupt pins can be used to program certain tasks, such as a specific time or date alarm, or to provide a long-term time or date logging.

The DS12885N also features a general purpose output (GPO) which can be programmed for a variety of uses such as triggering a periodic interrupt, generating a frequency, or serving as a sync output for an external counter or timer.

These features make the DS12885N an ideal RTC for embedded applications, as it is reliable and accurate, easy to configure and program, and can also be used to trigger interrupts and GPs.

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