RX-8581SA:B3:ROHS Epson

Real time clock module Product Number (Please contact us) RX-8581SA : Q41858152xxxx00 2 REAL TIME CLOCK MODULE (I C-Bus) RX-8581JE : Q41858171xxxx00 RX-8581NB : Q41858192000200 RX - 8581SA/JE/NB Built-in frequency adjusted 32.768kHz crystal unit. 2 Interface Type : I C-Bus Interface(400kHz) Operating voltage range : 1.8V to5.5V Wide Timekeeper voltage range : 1.6V to5.5V Low backup current : 0.45A /3V (Typ.) 32.768 kHz frequency output function : C-MOS output With Control Pin The various functions include full calendar, alarm, timer. Actual size RX-8581JE RX-8581SA RX-8581NB 2 * The I C-Bus is a trademark of NXP Semiconductors Block diagram Overview Interface Type 2 32.768 kHz I C-Bus interface. ( Hi-speed bus specifications 400 kHz) 2 I C-Bus slave address : read A3h and write A2h CLOCK DIVIDER and 32.768 kHz frequency output function OSC CALENDAR FOUT pin output (C-MOS output ), CL=30 pF 32.768 kHz clock frequency output. (Duty 50 5 %) FOUT FOUT TIMER Timer function CONTROLLER REGISTER FOE Timer interrupt function can be set up between 1/4096 second and 4095 minutes. It is recorded automatic to TF-bit at the time of event INTERRUPTS ALARM / INT occurrence,and possible to output with /TIRQ pin output CONTROLLER REGISTER (N-ch open-drain output). Interrupt function CONTROL Alarm interrupt function, Time update interrupt function. 2 REGISTER I C-BUS SCL INTERFACE and SDA CIRCUIT SYSTEM CONTROLLER Terminal connection/External dimensions (Unit:mm) RX 8581SA RX8581JE RX8581NB 1. N.C. 20. N.C. 1. /INT 22. N.C. 1. N.C. 14. FOUT 2. GND 21. N.C. 2. N.C. 19. N.C. 2. SCL 13. N.C. 3. ( VDD) 20. N.C. 3. FOE 18. N.C. 4. N.C. 19. N.C. 3. SDA 12. N.C. 4. VDD 17. N.C. 5. SDA 18. N.C. 5. FOUT 16. N.C. 4. N.C. 11. VDD 6. SCL 17. N.C. 5.0 6. SCL 15. N.C. 4.8 5.4 7. FOUT 16. N.C. 5. GND 10. FOE 7. SDA 14. N.C. 8. VDD 15. N.C. 1.3 0.1 8. ( VDD) 1.5 Max. 13. N.C. 6. N.C. 9. N.C. 9. FOE 14. N.C. 9. GND 12. N.C. 10. N.C. 13. 7.4 0.2 7. / INT 8. N.C. 5.0 0.2 6.0 0.2 10. /INT 11. N.C. 11. N.C. 12. SOP 14 pin VSOJ 20 pin SON 22 pin 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 =-40C to+85 C Item Symbol Conditions Min. Typ. Max. Unit Item Symbol Conditions Min. Typ. Max. Unit Power voltage VDD - 1.8 3.0 5.5 V VDD Clock voltage VCLK - 1.6 3.0 5.5 V fSCL =0Hz - 0.65 1.2 =5V Operating FOE=GND TOPR - -40 +25 +85 C temperature IBK A FOUT VDD - 0.45 0.8 output OFF( LOW ) Frequency characteristics =3V Current Item Symbol Conditions Rating Unit Consumption fSCL =0Hz VDD - 8.0 20.0 Frequency Ta=+25C FOE=VDD 6 =5V f/f 10 B: 5 23 tolerance VDD =3.0V I32k A FOUT VDD Ta=-40 Cto+85 C 32.768kHz output ON - 5.0 12.0 FOUT output Duty tw/ t 50 5 % =3V CL=30pF VDD =2.4Vto5.5V Please ask for tighter tolerance.( Equivalent to 1 minute of monthly deviation ) 1.27 3.2 0.1 10.1 0.2 0.65 7.0 0.3 0.5 6.3Max.