RX-4045SA:AA3

Real time clock module Product Number RX-4045SA AA: Q41404552000100 RX-4045SA AC: Q41404551000200 REAL TIME CLOCK MODULE (SPI-Bus) High-Stability Frequency RX-4045SA •Built-in 32.768 kHz crystal unit : Frequency adjusted for high accuracy. (± 5 ×10−6 / 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 µA / 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 32kHz OUTPUT CONTROL DIVIDER CORREC -TION ALARM_W REGISTER (MIN,HOUR, WEEK) COMPARATOR_D ALARM_D REGISTER (MIN,HOUR) OSC DETECT INTERRUPT CONTROL Signal Name Input / Output CE Input GND I/O CONTROL DI Input The data input pin for serial data transfer. DO Output The data output pin for serial data transfer. FOUT Output / INT Output 32.768 kHz clock output pin with the output control function ( N-ch open drain ) High impedance at the time of output off. Interrupt output ( N-ch open drain ) TEST - VDD - ∗ Used by the manufacturer for testing. (Do not connect externally.) Connected to a positive power supply. GND - Connected to a ground. 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  Frequency characteristics tSTA Frequency / voltage characteristics f/V ∗1) ∗2) 3. FOUT 4. N.C. 5. TEST 6. VDD 7. CE 5.0 14. N.C. 13. DO 12. DI 11. GND 10. / INT 9. N.C. 8. N.C. 7.4  Current consumption characteristics Conditions ∆f/f CLK ∗ Refer to application manual for details. Symbol Oscillation start-up time N.C. 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.  Recommended Operating Conditions Frequency tolerance 1. SOP − 14 pin Specifications (characteristics) Symbol (Unit:mm) RX − 4045 SA Input Item As for the Alarm function an optional combination is produced. (Date of the week , time , minute) CE Function CLK Power voltage Clock voltage Operating temperature ▪Timer function produces a periodic interruption signal. DO Terminal connection / External dimensions 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. Item • Equipped with alarm and timer DI 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 /INT VOLTAGE DETECT TIME COUNTER (SEC,MIN,HOUR,WEEK,DAY,MONTH,YEAR) DIV ▪Frequency adjusted for high accuracy ( ± 5 ×10−6 /Ta = +25 °C ) ( Equivalent to 13 seconds of monthly deviation ) VDD 3.2 OSC COMPARATOR_W 1.27 FOUT Conditions Ta = +25°C VDD = 3.0 V Ta = +25 °C VDD = 2.0 V Ta = +25 °C VDD = 2.0 V to 5.5 V Equivalent to ±13 seconds of monthly deviation (excluding offset.) Rating AA: 5 ± 5 AC: 0 ± 5 Item IBK ∗2) s ± 1 Max. × 10−6 CE = GND FOUT ;output OFF (Hi-z) I32k CE = GND FOUT ;32.768 kHz output ON × 10−6 1 Max. Conditions Current Consumption Unit ∗1) Symbol Ta = -40 °C to +85 °C Min. Typ. Max. VDD =5V - 0.60 1.80 VDD =3V - 0.48 1.20 VDD =3V - 0.65 2.00 µA  Power supply detection voltage Item Unit µA Ta = -30 °C to +70 °C 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. All of our major manufacturing and non-manufacturing sites, in Japan and overseas, completed the acquisition of ISO 14001 certification. 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