tel: +44 1460 256 100 fax: +44 1460 256 101 e-mail: sales@golledge.com web: www.golledge.com real time clock - i2c bus rv3029c3 tel: +44 1460 256 100 fax: +44 1460 256 101 e-mail: sales@golledge.com web: www.golledge.com 03 may 2012 features ? temperature compensated accuracy ? 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 clock output enable (clkoe) supply (vdd) clock output (clkout) serial clock input (scl) serial data (sda) pad 6 7 8 9 10 connection ground (vss) interrupt output (int) not connected backup supply voltage not connected option codes rv3029c3 product parameters product + option code eg: rv3029c3/b 25ppm -40+85c option code x (eg rv3029c3/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. see our website for details ? evaluation / development board & ? manual av ailable on request ? the i 2 c-bus is a trademark of philips electronics nv block diagram the rv3029c2 is a real-time-clock module with embedded crystal. this rtc has an i 2 c bus (2-wire serial-interface) and offers temperature compensated time. the stc (smart temperature compensation) can be factory calibrated to achieve a very high time accuracy of 6ppm from -40c to +85c (option a) and 8ppm from -40c to +125c (option c). beside standard rtc functions, it includes a backup-battery input with internal switchover function, a programmable trickle-charge circuitry, an integrated temperature sensor with digital output and offers 8 bytes ram and 2 bytes eeprom for customer application. the calendar function tracks year and leap-year flags. the clock tracks second, minute and hour in 24-hour format. programmable alarm setting and universal timer functions increase flexibility. description ? manufactured by micro crystal ? stocked &? supplied by golledge frequencies (selectable): 32.768khz, 1024hz, 32hz & 1hz ? frequency tolerance @ ?25c: 10ppm typ, 20ppm max ? time accuracy: 3ppm max (0.26s/day) @ 25c ? 6ppm max (0.52s/day), -40+85c ? a 25ppm max (2.17s/day), -40+85c ? b 8ppm max (0.70s/day), -40+125c ? d 30ppm max (2.60s/day), -40+125c ? e oper ating temperature range: -40 to +85c ? extended op. temp range: -40 t o +125c ? see above st orage temperature range: -55 to +125c ? supply v oltage (v dd ): i 2 c bus active 1.8 ~ 5.5v ? time-keeping mode 1.3 ~ 5.5v ? supply current (v dd =3.0v): 0.80 a typ, 1.0 a max ? 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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