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 CLK Input DI Input DO Output FOUT 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. N.C. 2. CLK The data input pin for serial data transfer. 3. FOUT The data output pin for serial data transfer. 4. N.C. Output 32.768kHzclock output pin with the output control function (N-ch open drain) High impedance at the time of output off. 5. TEST / INT Output Interrupt output TEST - VDD - Used by the manufacturer for testing. (Do not connect externally.) Connected to a positive power supply. GND - Connected to a ground. RX4045NB 14. 10.1 0.2 Input / Output CE (Unit:mm) Terminal connection/External dimensions N.C. 6. VDD 7. CE CE 2. VDD 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. 5.0 (N-ch open drain) 1. 13. 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 7.40.2 9. N.C. 9. GND 8. N.C. 10. /INT 11. N.C. SOP14 pin 6.3Max. OSC DIVIDER CORREC -TION Frequency adjusted forhigh accuracy (5106 /Ta=+25C) (Equivalent to 13 seconds of monthly deviation) VDD 0.5 FOUT 4.8 1.30.1 5.00.2 SON22 pin Metal may be exposed on the top or bottom of this product. This will not affect any quality, reliability or electrical spec. Refer to application manual for details. Specifications (characteristics) Current consumption characteristics Recommended Operating Conditions Item Power voltage Clock voltage Operating temperature Symbol Condition 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 Symbol Frequency tolerance f/f Oscillation start-up time tSTA Frequency / voltage characteristics f/V Symbol Condition CE=GND IBK FOUT;output OFF (Hi-z) Current Consumption Frequency characteristics Item Item CE=GND Condition 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 AA: 551) AC: 052) I32k Unit 10 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 Unit A A 6 1Max. s 1Max. 106 Power supply detection voltage Item Ta=30Cto+70C Symbol Condition 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. All of our major manufacturing and non-manufacturing sites, in Japan and overseas, completed the acquisition of ISO 14001 certification. 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. 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