real time clock module actual size block diagram ? ? ? ? overview ? ? ? ? high stability ? ua 3.4 x 10 -6 / -40 oc to +85 oc ( equivalent to 9 seconds of month deviation ) ? ub 5.0 x 10 -6 / -40 oc to +85 oc ( equivalent to 13 seconds of month deviation ) ? uc 5.0 x 10 -6 / -30 oc to +70 oc ? aa (+5 5.0) x 10 -6 / +25 oc ?? high resolution: 1/100s time register with capture buffer ? 32.768 khz frequency output function ? fout pin output (c-mos output), cl=30 pf ? output selectable: 32.768 khz, 1024 hz, 1 hz ? the various interrupt ? timer function can be set between 1/ 4096 second and 4095 minutes. ? alarm function can be set to day of week, day, hour, or minute. ? evin input. ? time synchronize function with 1pps signal input ? register compatibility: upper compatible with rx-4801. *it is possible to use it by the terminal connection as 32.768 khz-dtcxo. pin function ? ? ? ? terminal connection ? ? ? ? ( uni t :mm ) ? ? ? rx ??? 4803 ? sa 1. ce 14. di 2. clk 13. do 3. fout 12. t2(v pp ) 4. n.c. 11. gnd 5. test 10. / ? int 6. v dd 9. evin 7. foe 10.1 ?? ? 0.2 5.0 7.4 ??? 0.2 3.2 ??? 0.1 1.27 8. n.c. ?? sop ??? 14 pin rx ??? 4803 ? lc 1. n.c. 12. evin 2. foe 11. /int 3. v dd 10. gnd 4. fout 9. t2(vpp) 5. clk 8. do 6. ce 0.5 2.4 3.6 1.2 ? max. ? 2.8 7. di vsoj ??? 12pin 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. s p ecifications ( characteristics ) ? ? real time clock module (spi-bus) built-in 32.768 khz-dtcxo, high stability rx - 4803 sa ? / ? lc ? ? built in frequency adjusted 32.768 khz crystal unit and dtcxo. ? 1/100s resolution time register ? interface type : 4-wire serial interface ? interface voltage range : 1.6 v to 5.5 v ? temp. compensated voltage range : 2.2 v to 5.5 v ? clock supply voltage range : 1.6 v to 5.5 v ? selectable clock output (32.768 khz, 1024 hz, 1 hz) ? the various functions include full calendar, alarm, timer, evin input. epson is prepared linux driver for this product. ( http://www5.epsondev ice.com/en/quartz/tech/li nux_for_rtc/index.html ) the registered trademark linux? is used pursuant to a sublicense from lmi(linux mark institute) signal name i / o function ce input the chip enable input pin. clk input the shift clock input pin for serial data transfer. fout output the pin outputs the reference clock signal. ( cmos output ) test input use by the manufacture for testing. ( do not connect externally. RX-4803sa only.) v dd - connected to a positive power supply foe input the input pin for the fout output control. evin input external event input. / int output interrupt output (n-ch. open drain). gnd - connected to a ground t2(v pp ) - use by the manufacture for testing. ( do not connect externally.) do output the data output pin for serial data transfer. d i input the data input pin for serial data transfer. ? ? electrical characteristics item symbol conditions min. typ. max. unit interface voltage v dd ? interface voltage 1.6 3.0 5.5 v temp. compensated voltage v tem temp. compensated voltage 2.2 3.0 5.5 v clock supply voltage v clk - 1.6 3.0 5.5 v operating temperature t opr no condensation -40 +25 +85 oc stability ?? f ? / ? f ua ta ? = -40 oc to +85 oc 3.4 ? ? 1 ?? 10 -6 ub ta ? = ? -40 oc to +85 oc 5.0 ? ? 2 uc ta ? = -30 oc to +70 oc aa ta ? = ? +25 oc 5 5.0 ? 3 current consumption (1) i dd 1 backup mode foe = gnd, /int = v dd fout output : off v dd = 5v - 0.75 3.4 ? a current consumption (2) i dd 2 v dd = 3v - 0.75 2.1 ?? ? 1 ? ) equivalent to 9 seconds of month deviation. ? ? 2 ? ) ? equivalent to 13 seconds of month deviation. ? 3 ? ) equivalent to 13 seconds of month deviation. ( excluding offset ) product number (please contact us) RX-4803sa: x1b000132xxxx00 RX-4803lc: x1b000122xxxx00 RX-4803sa RX-4803lc ? ? 32.768 khz-dtcxo frequency temperature characteristics (example) frequency temperature characteristics -30 -25 -20 -15 -10 -5 0 5 10 -45 -35 -25 -15 -5 5 15 25 35 45 55 65 75 85 temperature (oc) frequency tolerance ( 10 - 6 ) tuning fork x'tal 32.768 khz dtcxo 32khz dtcxo 32.768 khz evin clock and calendar timer register alarm register fout controller system controller and control register divider interrupt controller interface circuit fout foe / int clk do d i ce *stop using the glue any glue must never use it after soldering lc-package to a circuit board.this product has glass on the back side of a package.when glue invasions between circuit board side and glass side, then glass cracks by thermal expansion of glue.in this case a crystal oscillation stops.consider glue abolition or glue do not touch to lc-package
promotion of environm ental management system conforming to international standards at seiko epson, all environmental initiatives operate under the plan-do-check-action (pdca) cycle designed to achieve continuous improvements. the environmental management system (ems) operates under the iso 14001 environmental management standard. all of our major manufacturing and non-manufacturing sites, in japan and overseas, completed the acquisition of iso 14001 certification. working for high quality in order provide high quality a nd reliable products and services than meet customer needs, seiko epson made early efforts towards obtaining iso9000 series certification and has acquired iso9001 for all business establishments in japan and abroad. we have also acquired iso/ts 16949 certification that is requested strongly by major automotive manufacturers as standard. ? explanation of the mark that are using it for the catalog ? pb free. ? complies with eu rohs directive. *about the products without the pb-free mark. contains pb in products exempted by eu rohs directive. (contains pb in sealing glass, high melting temperature type solder or other.) ? designed for automotive applications such as car multim edia, body electronics, remote keyless entry etc. ? designed for automotive applications related to drivi ng safety (engine control unit, air bag, esc etc ). seiko epson corporation notice ? this material is subjec t to change without notice. ? any part of this material may not be reproduced or duplicated in any form or any means without the written permission of seiko epson. ? the information about applied circuitry, software, usage, etc. wr itten in this material is intended for reference only. seiko epson does not assume any liability for the occurrence of infringing on any pat ent or copyright of a third party. this material does not a uthorize the licensing for any patent or intellectual copyrights. ? when exporting the products or technology described in this material, you should comp ly with the applicable export control law s and regulations and follow the procedures r equired by such laws and regulations. ? you are requested not to use the products (and any technical information furnished, if any) for the development and/or manufac ture of weapon of mass destruction or for other milit ary purposes. you are also requested that you would not make the products availabl e to any third party who may use the products for such prohibited purposes. ? these products are intended for general use in electronic equipment. when using them in s pecific applications that require ext remely high reliability, such as the applications stated below, y ou must obtain permission from seiko epson in advance. / space equipment (artificial satellites, rockets, etc.) / trans portation vehicles and related ( automobiles, aircraft, trains, vessels, etc.) / medical instruments to sustain life / submari ne transmitters / power stations and related / fire work equipmen t and security equipment / traffic control equipment / and others requiring equivalent reliability. ? all brands or product names mentioned herein are trademar ks and/or registered trademarks of their respective. iso 14000 is an international standard for environmental management that was established by the international standards organization in 1996 against the background of growing concern regarding global warming, destruction of the ozone layer, and global deforestation. iso/ts16949 is the international standard that added the sector-specific supplemental requirements for automotive industry based on iso9001.
|
