Real time clock module Product Number REAL TIME CLOCK MODULE (SPI-Bus) RX-4045SA AA: Q41404552000100 High-Stability Frequency RX-4045SA AC: Q41404551000200 RX-4045SA 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 : 1.7 V to 5.5 V Wide Timekeeper voltage range : 1.15 V to 5.5 V Various detection Functions : Oscillation stop detection function etc. Low backup current : 0.48 A / 3 V (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. Block diagram Overview Features built-in 32.768 kHz 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 D I 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 4045 SA Function Name Output The chip enabled input pin. 1. N.C. 14. N.C. CE Input ( built -in pull-down resistance ) At the H level, access becomes possible. 2. CLK 13. DO CLK Input The shift clock input pin for serial data transfer. 3. FOUT 12. DI DI Input The data input pin for serial data transfer. 4. N.C. 11. GND DO Output The data output pin for serial data transfer. 5.0 32.768 kHz clock output pin with the output control 5. TEST 10. / INT FOUT Output function ( N-ch open drain ) High impedance at the time of output off. 6. VDD 9. N.C. / INT Output Interrupt output ( N-ch open drain ) 7.4 7. CE 8. N.C. Used by the manufacturer for testing. TEST - (Do not connect externally.) SOP 14 pin VDD - Connected to a positive power supply. 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 = -40 C 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 = 5 V Operating IBK A FOUT output OFF TOPR - -40 +25 +85 C temperature VDD (Hi-z) Current - 0.48 1.20 = 3 V Consumption Frequency characteristics CE = GND VDD I32k - 0.65 2.00 A Item Symbol Conditions Rating Unit FOUT 32.768 kHz = 3 V 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 = -30 C 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 V to 5.5 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 10.1 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 IATF 16949 is the international standard that added the than meet customer needs, Seiko Epson made early efforts towards sector-specific supplemental requirements for automotive obtaining ISO9000 series certification and has acquired ISO9001 for industry based on ISO9001. all business establishments in Japan and abroad. We have also acquired IATF 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.) 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