Low-cost real-time clock IC offers precise timing
Compared to conventional RTCs with external 32,768 kHz quartz, extremely accurate application timing for maximum-accuracy time stamps is achieved at a minimal cost. Temperature stability is ±5 ppm within the -40°C to +85°C range, which enables a highly accurate absolute time offset of 15 seconds over the temperature range. In addition, the RTC1010 is pin-compatible with many different manufacturers.
The 400 kHz I²C bus interface ensures easy integration into the application. In addition to numerous calendar functions, the RTC1010 offers an adjustable frequency output that provides a choice of highly accurate output frequencies (CMOS): 32,768 kHz, 1,024 kHz or 1 Hz (for pulse-per-second applications). The output frequencies can be used to clock phase-locked loops or to generate other system frequencies.
The RTC1010 in its compact 14-pin plastic housing can be operated at supply voltages from 1.6 V to approximately 5.5 V. However, 3.0 V is typical. At 3 V, the power consumption of the RTC1010 is less than 1.8 µA, making the RTC extremely well suited for battery-operated applications.
www.petermann-technik.com/products/rtc/ptrtc1010
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