Real time clock module Product Number (Please contact us) RX-8581SA : Q41858152000200 2 REAL TIME CLOCK MODULE (I C-Bus) RX-8581JE : Q41858171000200 RX-8581NB : Q41858192000200 RX - 8581SA/JE /NB Built-in frequency adjusted 32.768kHz crystal unit. 2 Interface Type : I C-Bus Interface (400kHz) Operating voltage range : 1.8V to5.5V Wide Timekeeper voltage range : 1.6Vto5.5V Low backup current : 0.45 A / 3V (Typ.) 32.768 kHz frequency output function : C-MOS output With Control Pin The various functions include full calendar, alarm, timer. Actual size RX-8581SA RX-8581JE RX-8581NB 2 * The I C-Bus is a trademark of NXP Semiconductors Block diagram Overview Interface Type 2 32.768 kHz I C-Bus interface. ( Hi-speed bus specifications 400kHz) 2 I C-Bus slave address : read A3h and write A2h CLOCK DIVIDER and 32.768 kHz frequency output function OSC CALENDAR FOUT pin output (C-MOS output ), CL=30 pF 32.768 kHz clock frequency output. (Duty 50 5 %) FOUT FOUT TIMER Timer function CONTROLLER REGISTER FOE Timer interrupt function can be set up between 1/4096 second and 4095 minutes. It is recorded automatic to TF-bit at the time of event INTERRUPTS ALARM / INT occurrence,and possible to output with /TIRQ pin output CONTROLLER REGISTER (N-ch open-drain output). Interrupt function CONTROL Alarm interrupt function, Time update interrupt function. 2 REGISTER I C-BUS SCL INTERFACE and SDA CIRCUIT SYSTEM CONTROLLER Terminal connection /External dimensions (Unit:mm) RX 8581SA RX8581JE RX8581NB 1. /INT 22. N.C. 1. N.C. 20. N.C. 1. N.C. 14. FOUT 2. GND 21. N.C. 2. N.C. 19. N.C. 2. SCL 13. N.C. 3. (VDD) 20. N.C. 3. FOE 18. N.C. 4. N.C. 19. N.C. 3. SDA 12. N.C. 4. VDD 17. N.C. 5. SDA 18. N.C. 5. FOUT 16. N.C. 4. N.C. 11. VDD 6. SCL 17. N.C. 5.0 6. SCL 15. N.C. 4.8 5.4 7. FOUT 16. N.C. 5. GND 10. FOE 7. SDA 14. N.C. 8. VDD 15. N.C. 1.3 0.1 8. (VDD) 1.5 Max. 13. N.C. 6. N.C. 9. N.C. 9. FOE 14. N.C. 9. GND 12. N.C. 10. N.C. 13. 7.4 0.2 7. 8. N.C. /INT 5.0 0.2 6.0 0.2 10. /INT 11. N.C. 11. N.C. 12. SOP 14 pin VSOJ20 pin SON22 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. Specifications (characteristics) Refer to application manual for details. Recommended Operating Conditions Current consumption characteristics Ta =-40C to+85 C Item Symbol Conditions Min. Typ. Max. Unit Item Symbol Conditions Min. Typ. Max. Unit Power voltage VDD - 1.8 3.0 5.5 V VDD Clock voltage VCLK - 1.6 3.0 5.5 V fSCL=0Hz - 0.65 1.2 =5V Operating FOE=GND TOPR - -40 +25 +85 C temperature IBK A FOUT VDD - 0.45 0.8 output OFF( LOW ) Frequency characteristics =3V Current Item Symbol Conditions Rating Unit Consumption fSCL=0Hz VDD - 8.0 20.0 Frequency Ta= +25 C FOE=VDD =5V 6 f / f 10 B: 5 23 tolerance VDD = 3.0 V I32k A FOUT VDD Ta= -40 Cto +85 C 32.768kHz output ON - 5.0 12.0 FOUT output Duty tw/ t 50 5 % =3V VDD = 2.4 Vto 5.5 V CL=30pF Please ask for tighter tolerance.( Equivalent to 1 minute of monthly deviation ) 1.27 3.2 0.1 10.1 0.2 0.65 7.0 0.3 0.5 6.3Max. PROMOTION OF ENVIRONMENTAL 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 ISO 14000 is an international standard for environmental improvements. The environmental management system (EMS) management that was established by the International operates under the ISO 14001 environmental management standard. Standards Organization in 1996 against the background of All of our major manufacturing and non-manufacturing sites, in growing concern regarding global warming, destruction of the ozone layer, and global deforestation. Japan and overseas, completed the acquisition of ISO 14001 certification. WORKING FOR HIGH QUALITY In order provide high quality and reliable products and services than meet customer needs, ISO/TS16949 is the international standard that added the Seiko Epson made early efforts towards obtaining ISO9000 series sector-specific supplemental requirements for automotive certification and has acquired ISO9001 for all business industry based on ISO9001. 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 Multimedia, Body Electronics, Remote Keyless Entry etc. Designed for automotive applications related to driving safety (Engine Control Unit, Air Bag, ESC etc ). Notice This material is subject 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 data, circuitry, software, usage, etc. written in this material is intended for reference only. Seiko Epson does not assume any liability for the occurrence of customer damage or infringing on any patent or copyright of a third party. This material does not authorize the licensing for any patent or intellectual copyrights. When exporting the products or technology described in this material, you should comply with the applicable export control laws and regulations and follow the procedures required 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 manufacture of weapon of mass destruction or for other military purposes. You are also requested that you would not make the products available 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 specific applications that require extremely high reliability, such as the applications stated below, you must obtain permission from Seiko Epson in advance. / Space equipment (artificial satellites, rockets, etc.) / Transportation vehicles and related (automobiles, aircraft, trains, vessels, etc.) / Medical instruments to sustain life / Submarine transmitters / Power stations and related / Fire work equipment and security equipment / traffic control equipment / and others requiring equivalent reliability. All brands or product names mentioned herein are trademarks and/or registered trademarks of their respective. Seiko Epson Corporation