RX-8025SA:AA

Real time clock module Product Number (Please contact us) RX-8025SA AA : Q41802552000100 RX-8025SA AC : Q41802551000200 RX-8025NB AA : Q41802592000100 RX-8025NB AC : Q41802592000200 REAL TIME CLOCK MODULE (I 2C-Bus) High-Stability RX - 8025SA/NB •Built-in 32.768 kHz crystal unit : Frequency adjusted for high accuracy (5106/Ta=+25C) •Interface Type : I2C-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.) Actual size •32.768 kHz frequency output function : C-MOS output with OE pin. RX-8025SA •The various functions include full calendar, Dual alarm, Periodic interruption. RX-8025NB * The I2C-Bus is a trademark of NXP Semiconductors Block diagram Overview •Features built-in 32.768kHz crystal unit FOUT FOE Alarm_W Register ( Min,Hour,Week ) Comparator_W 32 kHz Output Control Alarm_D Register ( Min,Hour ) Comparator_D Divider Correc -tion OSC Div. • Frequency adjusted forhigh accuracy. (5106 / Ta=+25C) (Equivalent to ±13 seconds of monthly deviation) VDD Voltage Detect •The various detection function • Power supply voltage monitoring function (with selectable detection threshold) • Stop detection function • Power-on reset detection function Time Counter ( Sec,Min,Hour,Week,Day,Month,Year ) Address Decoder OSC Detect •Alarm function and Periodic interrupt function Address Register • The periodic interrupt outputs. Dual Alarm function. (Date of the week , Hour , minute) (Month, Day, Hour, Minute ) SCL I/O Control SDA / INTA Interrupt Control Shift Register / INTB GND RX8025SA FOE Output 32.768kHzclock output pin with the output control function. (C-MOS) FOE input L Input /CLEN1 bit X 0 0 1 1 H /CLEN2 bit X 0 1 0 1 FOUT output OFF (LOW) 32.768 kHz 32.768 kHz 32.768 kHz OFF(LOW) / INTA Output Interrupt output A pin (N-ch open drain) / INTB Output Interrupt output B pin (N-ch open drain) TEST - VDD - Used by the manufacture for testing. (Do not connect externally.) Connected to a positive power supply. GND - Connected to a ground. N.C. 2. SCL 3. FOUT 4. N.C. 5. TEST 14. N.C. 7. VDD FOE Conditions 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 f/f tSTA f/V N.C. 20. 19. N.C. N.C. 3. (GND) 12. /INTB 4. TEST 5. FOUT 18. N.C. 11. GND 6. SCL 17. N.C. 10. /INTA 7. SDA 16. N.C. 8. /INTB 15. N.C. N.C. 9. GND 14. N.C. N.C. 10. /INTA 13.  11. N.C. 12.  9. 7.40.2 8. 4.8 1.30.1 5.00.2 SON22 pin Current consumption characteristics Symbol Symbol N.C. 21.  Refer to application manual for details. Item Symbol IBK Curent Consumption 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 Range 10 1Max. s 1Max. 10 1)2)Equivalent to ±13 seconds of monthly deviation (excluding offset). I32k Unit AA: 551) AC: 052) Conditions fSCL=0Hz Frequency characteristics Item 22. 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 Oscillation start-up time Frequency voltage characteristics VDD SDA Specifications (characteristics) Power voltage Clock voltage Operating temperature 2. SOP14 pin . Item FOE 13. 5.0 6. 1. 6.3Max. FOUT 1. RX8025NB 10.1 0.2 Function Input Serial clock input pin Bi-directional Data input and output pin 3.20.1 Input / output 1.27 Signal Name SCL SDA (Unit:mm) Terminal connection/External dimensions 0.5 Pin Function 6 VDD =5V VDD =3V FOE=GND FOUT;output OFF(LOW) fSCL=0Hz VDD VDD,FOE=5.5V FOUT;output ON =5.5V  (Output=OPEN; CL=0pF) Ta=-40C to +85C Min. Typ. Max. - 0.60 1.80 - 0.48 1.20 - 3.0 6.5 µA Power supply detection voltage 6 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. 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