Real time clock module Product Number (Please contact us) RX-4045SA AA : Q41404552000100 RX-4045SA AC : Q41404551000200 RX-4045NB AA: Q41404592000100 RX-4045NB AC: Q41404592000200 REAL TIME CLOCK MODULE (SPI-Bus) High-Stability Frequency 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 DIVIDER CORREC -TION TIME COUNTER (SEC,MIN,HOUR,WEEK,DAY,MONTH,YEAR) DIV OSC DETECT INTERRUPT CONTROL CLK Input DI Input DO Output FOUT / INT Output Output Timer function produces a periodic interruption signal. DO As for the Alarm function an optional combination is produced. (Date of the week , time , minute) CE Terminal connection/External dimensions 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. 1. The data input pin for serial data transfer. The data output pin for serial data transfer. Interrupt output N.C. 2. CLK 3. FOUT 4. N.C. 5. 14. TEST - VDD - Used by the manufacturer for testing. (Do not connect externally.) Connected to a positive power supply. GND - Connected to a ground. 6. VDD 7. CE Typ. Max. Unit VDD VCLK - 1.7 1.15 3.0 3.0 5.5 5.5 V V TOPR - -40 +25 +85 tSTA Frequency / voltage characteristics f/V Item N.C. 20. 19. N.C. N.C. (GND) 12. DI 4. TEST 5. FOUT 18. N.C. 11. GND 6. CLK 17. N.C. /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 Symbol Conditions CE=GND IBK C FOUT;output OFF (Hi-z) Current Consumption Frequency characteristics f/f N.C. 21. 3. Current consumption characteristics Min. Oscillation start-up time 22. Refer to application manual for details. Conditions Frequency tolerance VDD 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. Symbol Symbol 2. SOP14 pin Recommended Operating Conditions Item CE DO 7.40.2 Specifications (characteristics) Power voltage Clock voltage Operating temperature N.C. 1. 13. 10. (N-ch open drain) (Unit:mm) RX4045NB 5.0 32.768kHzclock output pin with the output control function (N-ch open drain) High impedance at the time of output off. TEST Item *Equipped with alarm and timer DI 6.3Max. CE I/O CONTROL 0.5 Signal Name GND SHIFT REGISTER Pin function Power supply voltage monitoring function (with selectable detection threshold) Stop detection function Power-on reset detection function CLK ADDRESS REGISTER ADDRESS DECODER * The various detection Function 10.1 0.2 /INT VOLTAGE DETECT 3.20.1 OSC Frequency adjusted forhigh accuracy (5106 /Ta=+25C) (Equivalent to 13 seconds of monthly deviation) VDD 1.27 FOUT CE=GND Conditions Ta=+25C VDD=3.0V Ta=+25C VDD=2.0V Ta=+25C VDD=2.0Vto5.5V Rating I32k Unit AA: 551) AC: 052) 106 1Max. s 1Max. 106 FOUT;32.768kHz output ON 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 1)2) Equivalent to 13 seconds of monthly deviation (excluding offset.) 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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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