Real time clock module Product Number (Please contact us) RX-4045SA : Q41404552xxxx00 RX-4045NB : Q41404592xxxx00 High-Stability Frequency SERIAL-INTERFACE REAL TIME CLOCK MODULE RX-4045SA/NB Built-in 32.768 kHz crystal unit : Frequency adjusted for high accuracy. (5106/Ta=+25C) Interface Type : 4-wire serial interface Operating voltage range : 1.7Vto5.5V Wide Timekeeper voltage range : 1.15Vto5.5V Various detection Functions : Oscillation stop detection function etc. Low backup current : 0.48A/3V(Typ.) 32.768 kHz clock frequency output : N-ch open drain output Function of time and calendar, the various detection function, and interrupt function etc. Actual size RX-4045SA RX-4045NB Block diagram Overview Features built-in 32.768kHz crystal unit 32kHz OUTPUT CONTROL ALARM_W REGISTER (MIN,HOUR, WEEK) COMPARATOR_W ALARM_D REGISTER (MIN,HOUR) COMPARATOR_D VOLTAGE DETECT TIME COUNTER (SEC,MIN,HOUR,WEEK,DAY,MONTH,YEAR) DIV OSC DETECT Power supply voltage monitoring function (with selectable detection threshold) Stop detection function Power-on reset detection function GND CLK ADDRESS REGISTER ADDRESS DECODER The various detection Function I/O CONTROL Equipped with alarm and timer Timer function produces a periodic interruption signal. DI DO INTERRUPT CONTROL SHIFT REGISTER Pin function Input / Output Input RX4045SA Function The chip enabled input pin. ( built -in pull-down resistance ) At the "H"level, access becomes possible. The shift clock input pin for serial data transfer. CLK Input DI Input DO Output The data output pin for serial data transfer. Output 32.768kHzclock output pin with the output control function (N-ch open drain) High impedance at the time of output off. FOUT / INT Output 1. The data input pin for serial data transfer. Interrupt output - VDD - Used by the manufacturer for testing. (Do not connect externally.) Connected to a positive power supply. GND - Connected to a ground. 2. CLK 3. FOUT 4. N.C. 14. 5. TEST 6. VDD 7. CE Min. Typ. Max. Unit VDD VCLK - 1.7 1.15 3.0 3.0 5.5 5.5 V V TOPR - -40 +25 +85 C f/f Oscillation start-up time tSTA Frequency / voltage characteristics f/V 22. N.C. 21. N.C. 20. 19. N.C. N.C. DO 3. (GND) 12. DI 4. TEST 5. FOUT 18. N.C. 11. GND 6. CLK 17. N.C. 10. /INT 7. DO 16. N.C. 8. DI 15. N.C. 14. N.C. 13. 12. 9. N.C. 9. GND 8. N.C. 10. /INT 11. N.C. 4.8 1.30.1 5.00.2 SON22 pin Current consumption characteristics Conditions Frequency tolerance VDD Refer to application manual for details. Symbol Symbol 2. 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. Item Symbol Conditions CE=GND IBK FOUT;output OFF (Hi-z) Current Consumption Frequency characteristics Item CE SOP14 pin Recommended Operating Conditions Power voltage Clock voltage Operating temperature 1. 13. 7.40.2 Specifications (characteristics) Item N.C. 5.0 (N-ch open drain) TEST N.C. RX4045NB 10.1 0.2 CE (Unit:mm) Terminal connection/External dimensions 3.20.1 Signal Name As for the Alarm function an optional combination is produced. (Date of the week , time , minute) CE 1.27 /INT 6.3Max. OSC DIVIDER CORREC -TION Frequency adjusted forhigh accuracy (5106 /Ta=+25C) (Equivalent to 13 seconds of monthly deviation) VDD 0.5 FOUT CE=GND Conditions Ta=+25C VDD=3.0V Ta=+25C VDD=2.0V Ta=+25C VDD=2.0Vto5.5V 1)2) Equivalent to 13 seconds of monthly deviation (excluding offset.) Rating I32k Unit AA: 551) AC: 052) 10 1Max. s 1Max. 106 FOUT;32.768kHz output ON 6 Ta=40Cto+85C Min. Typ. Max. VDD =5V 0.60 1.80 VDD =3V 0.48 1.20 VDD =3V 0.65 2.00 A Power supply detection voltage Item Unit A Ta=30Cto+70C Symbol Conditions Min. Typ. Max. Unit High-voltage mode VDETH VDD pin 1.90 2.10 2.30 V Low-voltage mode VDETL VDD pin 1.15 1.30 1.45 V 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 improvements. The environmental management system (EMS) operates under the ISO 14001 environmental management standard. 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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.) The products have been designed for high reliability applications such as Automotive. 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 circuitry, software, usage, etc. written in this material is intended for reference only. Seiko Epson does not assume any liability for the occurrence of infringing on any patent or copyright of a third party. This material does not authorize the licensing for any patent or intellectual copyrights. 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