October 29, 2009 -
Housed in 5.0 x 3.2 x 1.2 mm SMD package, Model RV-2123-C2 contains 32.768 kHz Tuning Fork crystal, matched with CMOS-based oscillator and real-time-clock circuitry. Device features ultra-wide 1.1-5.5 V operating range and SPI-Bus® for communications with other circuitry. At room temperature, frequency and time keeping is within ±10 ppm or within ±20 ppm at 25°C. RoHS-compliant clock is suited for compact portable devices, especially where super capacitor is used for backup supply operation.
Precise Real Time Clock Has World's Lowest Current Drain
For applications requiring ultra-low power consumption, Micro Crystal has introduced a SMD package real time clock (RTC) that typically draws just 130nA @ 3.0V. The RV-2123-C2 is ideal for compact portable devices, especially where a super capacitor is used for backup supply operation. Its ultra-wide 1.1V to 5.5V operating range provides added flexibility. Communications with other circuitry is simplified by an SPI-Bus® (SCL up to 8 MHz @ 5.0V).
The SON 10 pin ceramic package contains a built-in 32.768 kHz Tuning Fork crystal, matched with a CMOS-based oscillator and real-time-clock circuitry. At room temperature, frequency and time keeping is within +/-10ppm or within +/- 20ppm @ 25°C. A user programmable Frequency Offset Compensation Register can be used to improve time accuracy. Aging rate is at a maximum of 3ppm for the first year.
The clock function tracks minutes and seconds either in 24-hour or in 12-hour AM/PM format. Programmable alarm setting and universal timer functions further increase flexibility. A calendar function provides year, month, date, and day-of-the-week, with built-in century and leap-year flags.
Moreover, the RV-2123-C2 offers open-drain Interrupt and programmable Clock Output for peripherals devices (32.768 kHz down to 1 Hz).
Because it is entirely self-contained, the RV-2123-C2 is a simple solution that can save engineering, procurement and inventory costs. External dimensions of the standard ceramic package are 5.0 x 3.2 x 1.2 max. mm. Like all Micro Crystal products, it is RoHS compliant and 100% lead free.
Potential applications are widespread, including: battery powered handheld devices, portable point of sales terminals, GPS, digital still cameras, glucose meters, security systems, appliances, factory automation, programmable logic control and data loggers.
Micro Crystal's RV-2123-C2 Real Time Clock is available in production quantities, with 10 to 12 week delivery.
For further information, feel free to send an email to info@microcrystal.com Company Information: Name: Micro Crystal, U.S. Address: 601-T W. Campus Dr. City: Arlington Heights State: IL ZIP: 60004 Country: USA Phone: 847-848-9825 FAX: 847-818-9915 http://www.mcrystal.com
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