Real time clock module 2 Product Number REAL TIME CLOCK MODULE (I C-Bus) RX-8025SA AA : Q41802552000100 High-Stability RX-8025SA AC : Q41802551000200 RX-8025SA Built-in 32.768 kHz crystal unit : Frequency adjusted for high accuracy 6 ( 5 10 / Ta = +25 C) 2 Interface Type : I C-Bus Interface (400 kHz) Operating voltage range : 1.70 V to 5.5 V Wide voltage for timekeeping : 1.15 V to 5.5 V Various detection Functions : Ex. Oscillation stop detection function Low backup current : 0.48 A / 3 V (Typ.) 32.768 kHz frequency output function : C-MOS output with OE pin. The various functions include full calendar, Dual alarm, Periodic interruption. 2 * The I C-Bus is a trademark of NXP Semiconductors Block diagram Overview Features built-in 32.768 kHz crystal unit Frequency adjusted for high accuracy. Alarm W Register FOUT Comparator W 32 kHz 6 ( Min,Hour,Week ) ( 5 10 / Ta = +25 C ) Output VDD Voltage ( Equivalent to 13 seconds of monthly deviation ) Control Detect FOE Alarm D Register Comparator D ( Min,Hour ) The various detection function Power supply voltage monitoring function Divider (with selectable detection threshold ) Time Counter Div. OSC Correc ( Sec,Min,Hour,Week,Day,Month,Year ) Stop detection function -tion Power-on reset detection function Alarm function and Periodic interrupt function Address Address OSC SCL The periodic interrupt outputs. Decoder Register Detect Dual Alarm function. I/O Control (Date of the week , Hour , minute) SDA (Month, Day, Hour, Minute ) / INTA Interrupt Control Shift Register / INTB GND Pin Function Terminal connection / External dimensions (Unit:mm) Signal RX 8025 SA Input / output Function Name SCL Input Serial clock input pin 1. N.C. 14. N.C. SDA Bi-directional Data input and output pin 32.768 kHz clock output pin with the output 2. SCL 13. SDA control function. (C-MOS) FOUT Output FOE /CLEN1 /CLEN2 FOUT 3. FOUT 12. / INTB input bit bit output L X X OFF ( LOW ) 4. N.C. 11. GND 0 0 32.768 kHz 5.0 0 1 32.768 kHz FOE Input H 1 0 32.768 kHz 5. TEST 10. / INTA 1 1 OFF(LOW) / INTA Output 6. VDD 9. N.C. Interrupt output A pin ( N-ch open drain ) / INTB Output Interrupt output B pin ( N-ch open drain ) 7.4 7. FOE 8. N.C. Used by the manufacture for testing. TEST - (Do not connect externally.) SOP 14 pin VDD - Connected to a positive power supply. GND - The metal case inside of the molding compound may be exposed on the top or bottom of this product. Connected to a ground. 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 VDD 1.7 fSCL = 0Hz - 0.60 1.80 Clock voltage VCLK - 1.15 3.0 5.5 V = 5 V FOE = GND IBK A Operating VDD FOUT output TOPR - -40 +25 +85 C - 0.48 1.20 temperature = 3 V OFF(LOW) Curent fSCL = 0Hz Consumption Frequency characteristics VDD, FOE = 5.5 V VDD = 5.5 V I32k FOUT output ON - 3.0 6.5 A Item Symbol Conditions Range Unit ( Output=OPEN 1) Frequency Ta = +25 C AA: 5 5 6 CL = 0 pF ) f / f 10 2) tolerance VDD = 3.0 V AC: 0 5 Oscillation Ta = +25 C 1 Max. s Power supply detection voltage tSTA Ta = -30 C to +70 C start-up time VDD = 2.0 V Frequency voltage Ta = +25 C Item Symbol Conditions Min. Typ. Max. Unit 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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