actual size real time clock module block diagram ? ? ? ? overview ? ? osc fout i / o controller shift register clk data ce wr 32.768 khz divider output controller foe control circuit fsel voltage detect clock and calendar ?? 32.768 khz frequency output function ?fout pin output (c-mos output ), cl=30 pf ?foe pin enables output on/off control. ?fsel pin enables output selectable 32.768 khz or 1 hz. ?? power supply voltage monitoring function ?detection that power supply voltage descended to 1.7 v or less. ?automatic record to fdt-bit at the time of power supply decline detection. pin function ? ? ? ? terminal connection ? ? ? ? ( unit:mm ) ? signal name input / output function ce input the chip enabled input pin. at the high ? level, access becomes possible. clk input the shift clock input pin for serial data transfer. wr input data pin input / output switching pin. data bi-directional the data input / output pin for serial data transfer. fout output 32.768 ? khz ? or 1hz clock output pin (c-mos output). high impedance at output off. foe input the input pin for the fout output control. fsel input select the frequency that is output from the fout pin. v dd - connected to a positive power supply. gnd - connected to a ground. ?? rtc ??? 4543 ? sa 1. gnd 14. fout 2. n.c. 13. n.c. 3. ce 12. n.c. 4. fsel 11. data 5. wr 10. clk 6. foe 9. v dd 7. n.c. 10.1 ?? ? 0.2 5.0 7.4 ??? 0.2 3.2 ??? 0.1 1.27 8. n.c. sop ??? 14 pin ? rtc ??? 4543 ? sb 1. n.c. 18. n.c. 2. n.c. 17. n.c. 3. n.c. 16. n.c. 4. n.c. 15. n.c. 5. foe 14. v dd 6. wr 13. n.c. 7. fsel 12. clk 8. ce 11. data 9. gnd 5.4 11.4 ??? 0.2 7.8 ??? 0.2 1.27 ? 2.0 ? max . 10. fout ?? sop ??? 18 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. s p ecifications ( characteristics ) * refer to a pp lication manual for details. ? ? recommended operating conditions item symbol conditions min. typ. max. unit power voltage v dd - 2.5 5.0 5.5 v clock voltage v clk - 1.4 5.0 5.5 v operating temperature t opr - -40 +25 +85 c ? ? frequency characteristics item symbol conditions rating unit frequency tolerance ?? f ? / ? f t a ? = ? +25 ? c v dd ? = ? 5.0 ? v ?? b: 5 ??? 23 ? ? ?? 10 ? 6 oscillation start-up time t sta t a ? = ? +25 ? c v dd ? = ? 2.5 ? v 3 ?? max. s ?? please ask for tighter tolerance.(equivalent to 1 minute of monthly deviation ) ? ? current consumption characteristics t a ? = ? -40 ?? c ? to ? +85 ?? c item symbol conditions min. typ. max. unit current consumption i bk ce ? = ? gnd foe ? = ? gnd fout ? ;output off (hi-z) v dd ? = ? 5 ? v ? - 1.5 3.0 a v dd ? = ? 3 ? v ? - 1.0 2.0 v dd ? = ? 2 ? v ? - 0.5 1.0 ? ? supply voltage detection characteristic t a ? = ? -40 ?? c ? to ? +85 ?? c item symbol conditions min. typ. max. unit power supply detection voltage v dt v dd pin 1.4 1.7 2.0 v rtc-4543sa RTC-4543SB real time clock module (spi-bus) simple function rtc - 4543 ? sa ? / ? sb ? built in frequency adjusted 32.768 khz crystal unit. ? interface type : 3-wire serial interface ? operating voltage range : 2.5 ? v ? to ? 5.5 ? v ? wide timekeeper voltage range : 1.4 ? v ? to ? 5.5 ? v ? 32.768 khz frequency output function : c-mos output with control pin ? the various functions include full calendar, timer, and low voltage detection. product number (please contact us) rtc-4543sa : q41454352000200 RTC-4543SB : q41454361000200
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.
|
