1. general description the PCF85263A is a cmos 1 real-time clock (rtc) and calendar optimized for low power consumption and with auto matic switching to battery on main power loss. the rtc can also be configured as a stop-watch (elapsed time counter). three time log registers triggered from battery switch-over as well as input driven events. fe aturing clock output and two independent interrupt signals, two alarms, i 2 c interface and quartz crystal calibration. for a selection of nxp real-time clocks, see table 72 on page 90 2. features and benefits ? ul recognized component ? provides year, month, day, weekday, ho urs, minutes, second s and 100th seconds based on a 32.768 khz quartz crystal ? stop-watch mode for elapsed time counting. from 100th seconds to 999999 hours ? two independent alarms ? battery back-up circuit ? watchdog timer ? three timestamp registers ? two independent interrupt generators plus predefined interrupts at every second, minute, or hour ? frequency adjustment via pr ogrammable offset register ? clock operating voltage: 0.9 v to 5.5 v ? low current; typical 0.28 ? aat v dd = 3.0 v and t amb =25 ? c ? 400 khz two-line i 2 c-bus interface (at v dd = 1.8 v to 5.5 v) ? programmable clock output for periphe ral devices (32.768 khz, 16.384 khz, 8.192 khz, 4.096 khz, 2.048 khz, 1.024 khz, and 1 hz) ? configurable oscillator circuit fo r a wide variety of quartzes: c l =6pf, c l = 7 pf, and c l = 12.5 pf 3. applications ? printers and copiers ? electronic metering ? digital cameras PCF85263A tiny real-time clo ck/calendar with ala rm function, battery switch-over, time stamp input, and i 2 c-bus rev. 2 ? 10 july 2014 product data sheet 1. the definition of the abbreviations and acronyms used in this data sheet can be found in section 24 .
PCF85263A all information provided in this document is subject to legal disclaimers. ? nxp semiconductors n.v. 2014. all rights r eserved. product data sheet rev. 2 ? 10 july 2014 2 of 100 nxp semiconductors PCF85263A tiny rtc with alarm, battery switch-over, and i 2 c-bus ? white goods ? elapsed time counter ? network powered devices ? battery backed up systems ? data loggers ? digital voice recorders ? mobile equipment ? accurate high duration timer 4. ordering information [1] under development; release planned for q3/2014. 4.1 ordering options 5. marking table 1. ordering information type number package name description version PCF85263At [1] so8 plastic small outlin e package; 8 leads; body width 3.9 mm sot96-1 PCF85263Atl dfn2626-10 plastic thermal enhanced extremely thin small outline package; no leads; 10 terminals; body 2.6 ? 2.6 ? 0.5 mm sot1197-1 PCF85263Att [1] tssop8 plastic thin shrink small outline package; 8 leads; body width 3 mm sot505-1 PCF85263Att1 [1] tssop10 plastic thin shrink small outline package; 10 leads; body width 3 mm sot552-1 table 2. ordering options product type number orderable part number sales item (12nc) delivery form ic revision PCF85263At/a PCF85263At/aj 935302207118 tape and reel, 13 inch 1 PCF85263Atl/a PCF85263Atl/ax 935302602115 tape and reel, 7 inch 1 PCF85263Att/a PCF85263Att/aj 935304459118 tape and reel, 13 inch 1 PCF85263Att1/a PCF85263Att1/aj 935304461118 tape and reel, 13 inch 1 table 3. marking codes product type number marking code PCF85263At/a 85263a PCF85263Atl/a 263a PCF85263Att/a 263a PCF85263Att1/a 263a
PCF85263A all information provided in this document is subject to legal disclaimers. ? nxp semiconductors n.v. 2014. all rights r eserved. product data sheet rev. 2 ? 10 july 2014 3 of 100 nxp semiconductors PCF85263A tiny rtc with alarm, battery switch-over, and i 2 c-bus 6. block diagram (1) not available on all package types. fig 1. block diagram of PCF85263A d d d 3 & |