203605-MG01

RV-3149-C3 is a CMOS low power, real-time clock/calendar module with built-in Thermometer and Digital Temperature Compensation circuitry (DTCXO). The temperature compensation circuitry is factory-calibrated and greatly improves the time accuracy by compensating the frequency-deviation @ 25°C and the anticipated frequency-drift over the temperature of the embedded 32.768 kHz Tuning-Fork crystal, even over the extended Temperature Range -40°C to +125°C. Data is transferred serially via a SPI interface with a maximum SCL clock frequency in fast mode of 1 MHz, the built-in word address register is incremented automatically after each written or read data byte. Beyond standard RTC-functions like year, month, day, weekday, hours, minutes, seconds information, the RV-3149-C3 offers highly versatile Alarm and Timer-Interrupt function, programmable Clock-Output and Low-Voltage Detector.

Features

• RTC module with built-in Tuning Fork crystal oscillating at 32.768 kHz
• Factory calibrated, all built-in Temperature Compensation circuitry
• Time accuracy: Temperature Range§○25°C +/- 3 ppm §○0°C to + 50°C +/- 4 ppm §○-10°C to + 60°C +/- 5 ppm §○-40°C to + 85°C +/- 6 ppm §○-40°C to +125°C +/- 8 ppm
• Ultra low power consumption: 800nA typ @ VDD = 3.0V / Tamb = 25°C
• Wide clock operating voltage: 1.3 5.5V
• Extended operating temperature range: -40°C to +125°C
• SPI serial interface with fast mode SCL clock frequency of 1 MHz
• Provides year, month, day, weekday, hours, minutes and seconds
• Main Power Supply to Backup Battery switchover circuitry with Trickle Charger
• Programmable CLKOUT pins for peripheral devices (32.768 kHz / 1024 Hz / 32 Hz / 1 Hz)