actual size real time clock module block diagram ? ? ? ? overview ? ? fout controller fout foe interrupts controller bus interface circuit timer register alarm register temperature sensor clock and calendar osc 32.768 khz divider control register and system controller / airq / tirq data clk ce control line vtemp / soff ?? built-in temperature sensor ? diode temperature sensor (analog voltage output) ?? temperature sensor operating voltage ? : ? 2.7 ? v ? to ? 5.5 ? v ?? temperature sensor tolerance ? : ???? 5 ?? c ? ( ? t a ? = ? +25 ?? c ? ) ? ?? voltage output (analog): ?? -7.6 ? mv ? / ??? c ?? typ. ? ?? 32.768 khz frequency output function ? fout pin output (c-mos output), cl=30 pf ? foe pin enables output on/off control. ?? the various interrupt function ? 12 ? bit additional counter. ? ( ? to ? 4095 count ? ) ? ? timer function can be set up between 1/4096 second and 255 minutes. ? alarm function can be set to day of week, hour, or minute. pin function ? ? ? ? terminal connection ? ? ? ? (unit : mm) ? ? signal name input / output function ce input the chip enabled input pin. (built -in pull-down resistance) clk inpu t the shift clock input pin for serial data transfer. data bi-directional the data input / output pin for serial data transfer. fout output foe input fout output ? high ? 32.768 ? khz output ?? c-mos output ? low output off ??? hi - z foe input v temp output the voltage output pin for the temperature sensor ( ? analog ? ). /soff input the input pin for the temperature sensor control. / ? airq output output 1 pin ( ? n-ch open drain ? ) ? / ? tirq output output 2 pin ( ? n-ch open drain ? ) ? v dd - connected to a positive power supply. gnd - connected to a ground. ???? rtc ??? 4701 ? je 1. v dd 20. n.c. 2. fout 19. n.c. 3. ce 18. n.c. 4. / ? airq 17. n.c. 5. / ? tirq 16. n.c. 6. clk 15. n.c. 7. data 14. n.c. 8. foe 13. n.c. 9. vtemp 12. n.c. 10. / ? soff 7.0 ??? 0.3 5.4 6.0 ??? 0.2 1.5 ? max. ?? ? 0.65 11. gnd ?? vsoj ??? 20 pin ? rtc ??? 4701 ? nb 1. gnd 22. n.c. 2. / ? soff 21. n.c. 3. vtemp 20. n.c. 4. foe 19. n.c. 5. data 18. n.c. 6. clk 17. n.c. 7. / ? tirq 16. n.c. 8. / ? airq 15. n.c. 9. ce 14. n.c. 10. fout 13. ??? 11. v dd 4.8 6.3 ? max. 5.0 ??? 0.2 0.5 1.3 ??? 0.1 ? ??? ?? son ??? 22 pin ????? the metal case inside of the molding compound may be exposed on the top or bottom of this product. this purely cosmetic and does not have any effect on quality, reliability or electrical specs. . temperature sensor characteristics * ? refer to application manual for details. ? if not specifically indicated, gnd ? = ? 0 ? v ? , ? v dd ? = ? 2.7 ? v ? to ? 5.5 ? v ? , ? t a ? = ? -40 ?? c ? to ? +85 ?? c ? ? item symbol conditions min. typ. max. unit temperature output voltage v temp v temp pin, ? t a ? = ? +25 ? ? c gnd based output voltage - 1.480 - v output tolerance t acr t a ? = ? +25 ?? c - - ??? 5.0 ? c temperature sensitivity v se -40 ?? c ????? t a ????? +85 ?? c -7.1 -7.6 -8.1 mv ? / ?? c linearity ? nl -40 ?? c ????? t a ????? +85 ?? c - - ??? 2.0 % temperature detection range t sop ? nl ????????? 2.0 ? % -40 - + ? 85 ? c output resistance r o v temp pin, ? t a ? = ? +25 ? ? c gnd standard and v dd standard - 1.0 3.0 k ? ? temperature sensitivity v se ? = ?? ( ? v ? ( ? +85 ?? c ? ) ? - ? v ? ( ? -40 ? ? c ? ) ? ) ? / ? 125 ? [ ? mv ? / ?? c ? ] ? ? linearity ?? nl ? = ? a ??? 100 ? [ ? % ? ] ? a : maximum deviation between the measured value of v temp and approximate straight line. b b : difference between the measured values at -40 ? c and +85 ? c. ? output resistance ? ( ? ro ? ) ? ro ??? = ?? v 1 ? [ ??? ] ? ??? 1 v temp 0 measured value -40 +85 a pproximat e straight line temperature out p ut volta ge [ ? c] [ v ] ta a b a a v (-40 ? c ) v(+85 ? c ) rtc-4701je RTC-4701NB real time clock module (spi-bus) built-in temperature sensor rtc - 4701 ? je ? / ? nb ? built in frequency adjusted 32.768 khz crystal unit. ? interface type : 3-wire serial interface ? operating voltage range : 1.6 ? v ? to ? 5.5 ? v ? wide timekeeper voltage range : 1.6 ? v ? to ? 5.5 ? v ? built-in temperature sensor : detects temperature. converts output to analog voltage ? 32.768 khz frequency output function : c-mos output with control pin ? function of time and calendar, the various interrupt function etc. product number (please contact us) rtc-4701je : q41470171000200 RTC-4701NB: q41470192000200
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