tel: +44 1460 256 100 fax: +44 1460 256 101 e-mail: sales@golledge.com web: www.golledge.com 16 nov 2012 real time clock, ultra low power RV8523C3 features ? ultra low power consumption (130na) ? aec q200 rev c compliant ? compliant with i 2 c-bus interface (400khz) ? backup battery input (internal switchover) ? programmable alarm, timer and interrupt 0.80 0.30 0.90 (max) 3.70 (typ) 2.50 (typ) solder pad layout top view 0.60 0.50 0.80 0.80 10 1 6 5 3.00 pad 1 2 3 4 5 connection supply (vdd) interrupt 1 output (int1) serial clock input (scl) serial data (sda) clock output (clkout) pad 6 7 8 9 10 connection interrupt 2 output (int2) ground (vss) backup supply voltage not connected not connected option codes RV8523C3 product parameters product + option code eg: RV8523C3/b 20ppm option code x (eg RV8523C3/x) denotes a custom spec. ordering information ? standard. ? optional - please specify required code(s) when ordering specifications ? available on t&r - 1k or 3k pcs per reel ? evaluation / development board & ? manual av ailable on request ? the i 2 c-bus is a trademark of philips electronics nv block diagram this rtc ic has been specially designed to achieve an ultra-low power consumption of typically 130na @ vdd 3.0v in time-keeping mode. it combines a 32.768khz crystal unit with a cmos based oscillator and real- time clock circuit. the calendar function tracks year, month, date and day of the week with built-in century and leap-year flags. the clock function tracks minutes and seconds in 24-hour format. programmable alarm setting, dual timer functions and integrated switchover circuitry increase flexibility. ? manufactured by micro crystal ? stocked &? distribut ed by golledge description frequencies (programmable): 32.768khz ~ ?1hz ? frequency tolerance: 10ppm ? a 20ppm ? b other ? specify t urnover temperature (t 0 ): +25c 5c ? fr equency / temp coefficient: -0.035ppm/c 2 10% ? oper ating temperature range: -40 to +85c ? -40 to +125c ? e st orage temperature range: -55 to +125c ? supply v oltage (v dd ): i 2 c bus active 1.6 ~ 5.5v ? power management 1.8 ~ 5.5v ? time-keeping mode 1.2 ~ 5.5v ? supply current (during access): 100/200 a typ/max (fscl=1mhz) ? 50/100 a typ/max (f scl=100khz) ? supply current (time-keeping): 130/180na typ/max (fscl=0hz, v dd =3v) ? 110/160na typ/max (fscl=0hz, v dd =2v) ? ageing: 3ppm max fir st year ? shock and vibration resistance: 5ppm, 5,000g, 0.3ms, ? sine ? 5ppm, 20g, 10.0 ~ 2,000hz ? soldering condition: reflow, 260c, 20 sec max ? 2 011 / 65 / eu
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