Real time clock module Product Number (Please contact us) RX-4045SA AA : Q41404552000100 REAL TIME CLOCK MODULE (SPI-Bus) RX-4045SA AC : Q41404551000200 RX-4045NB AA: Q41404592000100 High-Stability Frequency RX-4045NB AC: Q41404592000200 RX - 4045 SA/NB Built-in 32.768 kHz crystal unit : Frequency adjusted for high accuracy. 6 ( 5 10 /Ta= +25 C) Interface Type : 4-wire serial interface Operating voltage range : 1.7V to5.5V Wide Timekeeper voltage range : 1.15V to5.5 V Various detection Functions : Oscillation stop detection function etc. Low backup current : 0.48 A / 3V (Typ.) Actual size 32.768 kHz clock frequency output : N-ch open drain output RX-4045SA RX-4045NB Function of time and calendar, the various detection function, and interrupt function etc. Block diagram Overview Features built-in 32.768kHz crystal unit Frequency adjusted for high accuracy ALARM W REGISTER FOUT 32kHz COMPARATOR W 6 ( 5 10 /Ta=+25 C) (MIN,HOUR, WEEK) OUTPUT VDD ( Equivalent to 13 seconds of monthly deviation ) CONTROL VOLTAGE ALARM D REGISTER COMPARATOR D DETECT (MIN,HOUR) The various detection Function Power supply voltage monitoring function TIME COUNTER DIVIDER (with selectable detection threshold ) OSC CORREC DIV (SEC,MIN,HOUR,WEEK,DAY,MONTH,YEAR) GND Stop detection function -TION Power-on reset detection function CLK OSC ADDRESS ADDRESS Equipped with alarm and timer I/O DETECT DECODER REGISTER DI CONTROL Timer function produces a periodic interruption signal. DO As for the Alarm function an optional combination is produced. (Date of the week , time , minute) /INT CE INTERRUPT CONTROL SHIFT REGISTER Pin function Terminal connection /External dimensions (Unit:mm) Signal Input / RX 4045SA RX 4045NB Function Name Output N.C. 1. CE 22. The chip enabled input pin. 1. N.C. 14. N.C. CE Input ( built -in pull-down resistance ) N.C. 2. VDD 21. At the level, access becomes possible. 2. CLK 13. DO 3. (GND) 20. N.C. CLK Input The shift clock input pin for serial data transfer. N.C. 4. TEST 19. 3. FOUT 12. DI DI Input The data input pin for serial data transfer. N.C. 5. FOUT 18. 4. N.C. 11. GND DO Output N.C. The data output pin for serial data transfer. 6. CLK 17. 5.0 4.8 32.768 kHzclock output pin with the output control N.C. 7. DO 16. 5. TEST 10. / INT FOUT Output function ( N-ch open drain ) N.C. 8. DI 15. High impedance at the time of output off. 1.3 0.1 6. VDD 9. N.C. N.C. 9. GND 14. / INT Output Interrupt output (N-ch open drain ) 7.4 0.2 10. /INT 13. 7. CE 8. N.C. Used by the manufacturer for testing. 5.0 0.2 TEST - 11. N.C. 12. (Do not connect externally.) SOP 14 pin VDD - Connected to a positive power supply. SON22 pin GND - Connected to a ground. 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 - 3.0 5.5 V 1.7 VDD - 0.60 1.80 Clock voltage VCLK - 1.15 3.0 5.5 V CE=GND =5V Operating IBK A FOUT output OFF TOPR - -40 +25 +85 C temperature VDD (Hi-z) Current - 0.48 1.20 =3V Consumption Frequency characteristics CE=GND VDD I32k - 0.65 2.00 A Item Symbol Conditions Rating Unit FOUT 32.768kHz =3V output ON 1) Frequency Ta= +25C AA: 5 5 6 f / f 10 2) tolerance VDD= 3.0 V AC: 0 5 Power supply detection voltage Ta =-30C to+70 C Oscillation Ta= +25 C tSTA 1 Max. s start-up time VDD= 2.0 V Item Symbol Conditions Min. Typ. Max. Unit Frequency / voltage Ta= +25 C 6 f /V 1 Max. 10 characteristics VDD= 2.0 Vto5.5 V High-voltage mode VDETH VDD pin 1.90 2.10 2.30 V 1) 2) Equivalent to 13 seconds of monthly deviation (excluding offset.) Low-voltage mode VDETL VDD pin 1.15 1.30 1.45 V 1.27 3.2 0.1 10.1 0.2 0.5 6.3Max. 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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. 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