Real time clock module SERIAL REAL TIME CLOCK MODULE RTC-4574SA / JE / NB Product number (please refer to page 5) Q4145745x000200 Q4145749xxxxx00 * * * * * * * * * * Q4145747x000100 Built-in crystal unit allows adjustment-free efficient operation. Serial interface which can be controlled by three signal lines. Alarm interrupt function for day of week, day, hour, and minute. Timer interrupt function which can be set up between 1/4096 second and 255 minutes . Dedicated interrupt output of the two systems (alarm and regular cycle) which allows software masking. Ability to detect stopping of oscillation and time update. Wide range of interface voltage and clock voltage between 1.6 V and 5.5 V. Low power consumption at 0.5 A / 3 V. (Typ.) Available for lead (Pb) - free soldering. Available for lead (Pb) - free terminal. RTC-4574SA RTC-4574NB RTC-4574JE Actual size The details are mentioned in the application manual. Output voltage Storage temperature Condition VDD to GND Input Pin _______ _______ TIRQ, AIRQ FOUT, DATA Stored as bare product after unpacking Min. -0.3 Max. +7.0 VDD +0.3 GND -0.3 +8.0 VDD +0.3 -55 +125 Unit #8 V #1 Item Symbol Condition Power voltage VDD - Clock voltage VCLK - Operating temperature TOPR No condensation No. 1 2 3 4 5 6 7 C Operating range Min. Max. Unit 1.6 5.5 V -40 +85 C (Unit: mm) (SOP 14-pin) #14 5.0 Symbol VDD VIN VOUT1 VOUT2 TSTG #7 10.10.2 3.1 3.20.1 Item Supply voltage Input voltage External dimensions / Terminal connection 7.40.2 Specifications (characteristics) Absolute Max. rating 0.35 No. 14 13 12 11 10 9 8 Pin terminal FCON CE1 DATA CLK TIRQ AIRQ CE0 No. 20 19 18 17 16 15 14 13 12 11 Pin terminal N.C N.C N.C N.C N.C N.C N.C N.C N.C N.C No. 22 21 20 19 18 17 16 15 14 (13) (12) Pin terminal N.C N.C N.C N.C N.C N.C N.C N.C N.C - 0 to 10 1.2 1.27 Pin terminal GND FOUT N.C N.C N.C N.C VDD 0.05 Min. 0.6 0.15 Frequency characteristics Symbol Condition Range Unit Frequency tolerance f/f Ta = +25 C, VDD = 3 V B: 5 23 x 10-6 Oscillation start up time (VSOJ 20-pin) Ta = +25 C, VDD = 1.6 V 3 Max. s Top Ta = -20 C to +70 C Reference at +25 C +10 -120 x 10-6 Frequency voltage characteristics Aging f/V fa Ta = +25 C, VDD = 1.6 V to 5.5 V Ta = +25 C, VDD = 3 V 2 5 x 10-6 / V x 10-6 / year #1 Please ask tighter tolerance. Output voltage 1 VOL1 VOL2 Output voltage 2 VOL3 VDD = 5 V IOL = 1 mA DATA, FOUT pins VDD = 3 V IOL = 100 A DATA, FOUT pins VDD = 5 V ______ IOL =______ 1 mA VDD = 3 V AIRQ, TIRQ pins - 6.0 0.2 Unit A 0.22 0 Min. 0.65 (0.75) (SON 22-pin) 6.3 Max. GND +0.5 GND +0.8 #22 V #14 GND +0.1 GND +0.25 GND +0.4 (0.75) V 3.0 - GND Max. 2.0 1.0 VDD 0.2 VDD 5.0 Pin terminal VDD FOUT CE0 AIRQ TIRQ CLK DATA CE1 FCON GND 1.3 1.5 Max. Typ. 1.0 0.5 0.5 #1 #11 0.2 1.3 0.1 VOL4 VOL5 No. 1 2 3 4 5 6 7 8 9 10 (GND = 0 V, VDD = 1.8 V to 5.5 V, Ta = -40 C to +85 C) Symbol Condition Min. IDD2 VDD = 5 V CE0____ , CE1 =_____ GND - IDD2 VDD = 3 V DATA , AIRQ, T IRQ VDD VIH 0.8 VDD CE0, CE1, CLK, DATA, FCON pins VIL 0 VOH1 VDD = 5 V IOH = -1 mA 4.5 DATA, FOUT pins 2.0 VOH2 VDD = 3 V IOH = -100 A VOH3 2.9 DATA, FOUT pins 4.8 Input voltage #10 7.00.3 DC characteristics Item Standby current 1 Standby current 2 #11 5.4 #20 tSTA Frequency temperature characteristics 5.00.2 Item No. 1 2 3 4 5 6 7 8 9 10 11 Pin terminal GND FCON N.C CE1 DATA CLK TIRQ AIRQ CE0 FOUT VDD Metal may be exposed on the top or bottom of this product. This won't affect any quality, reliability or electrical spec. 83 Real time clock module Register table Address Register symbol bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0 0 Sec fos S 40 S 20 S 10 S8 S4 S2 S1 1 Min fr Min 40 Min 20 Min 10 Min 8 Min 4 Min 2 Min 1 2 Hour fr 0 Hour 20 Hour 10 Hour 8 Hour 4 Hour 2 Hour 1 3 Day of Week fr W6 W5 W4 W3 W2 W1 W0 4 Day fr 0 Day 20 Day 10 Day 8 Day 4 Day 2 Day 1 5 Month fr 0 0 Month 10 Month 8 Month 4 Month 2 Month 1 6 Year Year 80 Year 40 Year 20 Year 10 Year 8 Year 4 Year 2 Year 1 7 Minutes Alarm AE A-Min 40 A-Min 20 A-Min 10 A-Min 8 A-Min 4 A-Min 2 A-Min 1 8 Hours Alarm AE A-Hr20 A-Hr10 A-Hr8 A-Hr4 A-Hr2 A-Hr1 9 Week Alarm AE A-W 6 A-W 5 A-W 4 A-W 3 A-W 2 A-W 1 A-W 0 A Day Alarm AE A-Day 20 A-Day 10 A-Day 8 A-Day 4 A-Day 2 A-Day 1 B FOUT control FE FD4 FD3 FD2 FD1 FD0 C Timer interrupt control TE TD1 TD0 D Count Down Timer Timer 128 Timer 64 Timer 32 Timer 16 Timer 8 Timer 4 Timer 2 Timer 1 E Control 1 0 0 0 TI / TP AF TF AIE TIE F Control 2 0 TEST STOP RESET HOLD 0 0 0 AC characteristics Item (GND = 0 V, Ta = -40 C to +85 C) CLK clock cycle tCLK CLK H Pulse Width tWH CLK L Pulse Width tWL CE setup time tCS CE hold time tCH CE recovery time tCR 600 Write data setup time tDS 100 Write data hold time tDH 80 800 400 - 50 % CE 175 - tWZ Read data delay time tRD CL = 50 pF Output disable time tRZ Rise and fall time tRF Duty 350 tCS tWH tWL CLK Write data disable delay time FOUT duty ratio (32.768 kHz output) Timing chart VDD = 3.0 V 10 % VDD = 5.0 V 10 % Symbol Control Unit Min. Max. Min. Max. - ns 50 200 100 - 35 65 D0 tCLK D1 10 % D6 D7 D0 DATA D0 D1 D6 D7 tRZ tRD D7 D0 (Setup code, setup address) 100 D6 (Write data) tWZ Data Read 120 - 50 % tDS tDH tCR 90 % (Setup code, setup address) 0 300 - DATA 300 0 CL = 50 pF RL = 10 k Data Write tCH tRF tRF D6 D7 90 % 10 % (Read data) From here the DATA pin turns into the output mode. 50 40 60 % Block diagram 32.768 kHz OSC FOUT FCON TIRQ AIRQ Control line Divider Output controller Timer register Interrupts controller Alarm register DATA CLK CE1 CE0 Clock and Calendar Control register Bus interface circuit Shift register 84