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| Real time clock module 4-bit REAL TIME CLOCK MODULE RTC-7301SF/DG Product number (please refer to page 2) Q42 7 3 0 1 8 x 0 0 0 2 0 0 Q42 7 3 0 1 1 x 0 0 0 2 0 0 * Built-in crystal oscillator 32.768 kHz with frequency adjusted * Frequency selectable clock output (32.768 kHz to 1/30 Hz) * Built-in 30 second adjustment function, digital pace adjustment function (Max. adjustment: 192 x 10-6) * Built-in alarm and timer interrupt functions. * Built-in semiconductor temperature sensor (Voltage output: -7.8 mV / C, RTC-7301SF) * Operating voltage range:2.4 V to 5.5 V, time keeping voltage range: 1.6 V to 5.5 V * Low current consumption (0.6 A / 3 V Typ.) * High speed parallel interface compatible with SRAM The details are mentioned in the application manual. http://www.epsondevice.com RTC-7301SF RTC-7301DG Actual size Specifications (characteristics) Absolute Max. ratings Item Supply voltage Input voltage Output voltage(1) Output voltage(2) Storage temperature Condition Symbol Min. Max. VDD to GND VDD -0.3 + 7.0 VIN Input terminal,D0 to D3 pins GND -0.3 VDD+ 0.3 VOUT1 GND -0.3 + 8.0 IRQ pin VOUT2 FOUT, D0-D3 pins, VTEMP pin GND -0.3 VDD+ 0.3 TSTG Stored as bare product after unpacking +125 -55 GND=0V Unit Terminal connection RTC-7301SF #24 #13 V C #1 #12 Operating conditions Item Symbol VDD VCLK TOPR Condition GND=0V No. 1 2 3 4 5 6 7 8 9 10 11 12 Pin terminal CS0 FCON FOUT VTEMP (VDD) IRQ A0 A1 A2 A3 RD GND No. 24 23 22 21 20 19 18 17 16 15 14 13 Pin terminal VDD (VDD) (VDD) (VDD) (VDD) (VDD) CS1 D0 D1 D2 D3 WR Min. 2.4 1.6 Max. 5.5 5.5 + 85 Unit V V C RTC-7301DG #18 Power voltage Clock voltage Operating temperature #10 No condensation - 40 Frequency characteristics Item Frequency precision Symbol f/fo tSTA TOP f/V fa Condition Range 5 23 3 Max. +10/-120 2 5 Unit x 10 s x 10-6 -6 #1 #9 No. 1 2 3 4 5 6 7 8 9 Pin terminal CS0 FOUT IRQ A0 A1 A2 A3 RD GND No. 18 17 16 15 14 13 12 11 10 Pin terminal VDD (VDD) (VDD) CS1 D0 D1 D2 D3 WR Ta=+25 C, VDD= 3.0 V Ta=+25 C, VDD= 2.4 V Ta=-10 C to +70 C, VDD= 3.0 V Ta=+25 C, VDD= 1.6 V to 5.5V Ta=+25 C, VDD= 3.0 V Oscillation start-up time Frequency temperature characteristics Frequency voltage characteristics Aging (VDD) and VDD are to have the same level of voltage. Do not connect it to any external terminals. External dimensions RTC-7301SF(SSOP 24-pin) 10.5 Max. (Unit: mm) x 10 /V -6 x 10-6/year Please ask tighter tolerance DC characteristics Item GND=0 V,VDD=1.6 V to 5.5 V,Ta= - 40 C to + 85 C 8.1 Max. 2.0 Max. 0 Min. Symbol Condition Min. Typ. Max. Unit -- -- 1.0 0.6 2.0 1.0 A A Current consumption (When non-accessed) FOUT =Output OFF VTEMP =Output OFF CS0,RD,WR=VDD IDD1 VDD= 5 V A0-A3,CS1=GND D0-D3,IRQ=Hi-z FOUT=Hi-z(OFF) IDD2 VDD= 3 V R7301 E 123 4A VTEMP=Hi-z(OFF) Note)There is no VTEMP pin on the RTC-7301DG so standards for the VTEMP pin within the conditions described above do not apply. 0.8 0.36 5.4 0.5 0.15 0 to 10 Temperature sensor characteristics Item Temperature output voltage Output precision Temperature sensitivity Linearity Temperature detection range Output resistance Load condition Symbol VTEMP TACR VSE NL TSOP R0 CL RL tRSP Condition GND=0 V,Ta= - 40 C to + 85 C Min. Typ. Max. Unit Metal may be exposed on the top or bottom of this product. This won't affect any quality, reliability or electrical spec. 91 Response time Ta= +25 C, GND based output voltage V 1.470 VTEMP pins, VDD=2.7 V to 5.5 V Ta= +25 C, VDD=2.7 V to 5.5 V 5.0 C -40 C Ta +85 C, -7.3 -7.8 -8.3 mV/C VDD=2.7 V to 5.5 V -40 C Ta +85 C, VDD=2.7 V to 5.5 V 2.0 % NL 2.0 %, VDD=2.7 V to 5.5 V -40 +85 C Ta= +25 C, VTEMP pins, VDD=2.7 V to 1.0 3.0 k 5.5 V GND standard and VDD standard VDD=2.7 V to 5.5 V 100 pF VDD=2.7 V to 5.5 V 500 k 200 s VDD=3.3 V CL=50 pF, RL= 500 k, Max. 1 C RTC-7301DG(DIP 18-pin) 23.1 Max. RTC7301 E 123 4A 7.62 0.2 Min. 0.25 90 to 105 2.54 0.46 2.54 Min. Note)There is no temperature sensor function on the RTC-7301DG. 4.2 6.3 Real time clock module Register table Bank0 Clock and calendar registers Bank1 Alarms and FOUT registers Bank2 Digital offset and timer registers Address Address Address bit 3 bit 2 bit 1 bit 3 bit 0 bit 3 bit 2 bit 1 Register 1 second digit 10 second digit 1 minute digit 10 minute digit 1hour digit 10 hour digit Day digit 1 day digit 10 day digit 1 month digit 10 month digit 1 year digit 10 year digit 100 year digit 1000 year digit bit 0 Register 1 second digit 10 second digit 1 minute digit 10 minute digit 1hour digit 10 hour digit Day digit 1 day digit 10 day digit -- -- Registers 0 1 2 3 4 5 6 7 8 9 A B C D E F 8 FOS 8 o 8 o o 8 o 8 o 8 80 800 4 40 4 40 4 o 4 4 o 4 o 4 40 400 2 20 2 20 2 20 2 2 20 2 o 2 20 200 1 10 1 10 1 10 1 1 10 1 10 1 10 100 0 1 2 3 4 5 6 7 8 9 A B C D E F 8 AE 8 AE 8 AE AE 8 AE * * 4 40 4 40 4 * 4 4 * * * 2 20 2 20 2 20 2 2 20 * * * FD1 FD4 AF 1 10 1 10 1 10 1 1 10 * * * FD0 FD3 AIE 0 1 2 3 4 5 6 7 8 9 A B C D E F Digital offset -- -- Timer counter preset value Timer counter data Timer settings -- -- -- -- -- Timer control Control register DT3 DT2 bit 2 DT1 DT5 o o 2 32 2 32 TD1 o o o o o TF bit 1 Max. -- 85 85 45 -- 30 -- 30 -- -- -- -- -- -- -- -- -- 60 DT0 DT4 o o 1 16 1 16 TD0 o o o o o TIE DT_ON DT6 o o 8 128 8 128 TE o o o o o o o 4 64 4 64 TI/TP o o o o o CS1 Controller CTEMP CDT_ON FOUT divider ratio setting register FOUT divider ratio setting register Alarm control o FE FD2 o TEST TEMP 2000 1000 TEST TEMP TEST TEMP Control registers Bank Sel 1 Bank Sel 0 STOP BUSY/ADJ Control register Bank Sel 1 Bank Sel 0 STOP BUSY/ADJ Bank Sel 1 Bank Sel 0 STOP BUSY/ADJ Reading data tRC A0 to A3 AC characteristics *GND=0 V, Ta= -40 C to + 85 C *Input conditions: VI= 0.5 x VDD, VO= 0.5 x VDD *Output load: CL= 100 pF (tACC,tACS,tARD) tOH tACC tACS CS0 Item Read cycle time Address access time CE access time RD access time CE output set time CE output floating RD output set time RD output floating Output hold time Write cycle time Chip select time Address valid end of write Address setup time Address hold time Write pulse width Input data set time Input data hold time FOUT output frequency duty VDD=2.4 to 3.6 V VDD=4.5 to 5.5 V Symbol Condition tRC tACC tACS tARD tCLZ tCHZ tOLZ tOHZ tOH tWC tCW tAW tAS tWR tWP tDW tDH DUTY tCLZ CS1 tCHZ tACS tCLZ tARD tCHZ RD tOLZ D0 to D3 tOHZ Writing data (CS Control) tWC A0 to A3 tAW tCW CS0 tWR tAS CS1 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Min. 150 -- -- -- 5 -- 5 -- 10 150 140 140 0 0 130 80 0 40 Max. -- 150 150 100 -- 60 -- 60 -- -- -- -- -- -- -- -- -- 60 Min. 85 -- -- -- 3 -- 3 -- 5 85 70 70 0 0 65 35 0 40 Unit ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns % WR Block diagram tDW tDH 32.768 kHz OSC VTEMP FOUT FCON*2 7301SF *1 FOUT= 32.768 kHz Control line Degital Trimming REGISTER D0 to D3 DIVIDER Writing data (WR Control) twC A0 to A3 Temperature Sensor *1 FOUT CONTROLLER CLOCK and CALENDAR TIMER REGISTER 7301DG tAW CS0 tWR IRQ INTERRUPTS CONTROLLER tAS CS1 A0 to A3 D0 to D3 WR RD ALARM REGISTER BUS INTERFACE CIRCUIT tWP WR CS0 CS1 CONTROL REGISTER and SYSTEM CONTROLLER tDW D0 to D3 tDH *This is a block diagram for RTC-7301SF. Be aware that RTC-7301DG differs according to the following 2 points. *1)The VTEMP output is not connected to an external pin. *2)The FCON input pin is not connected to an external pin, but is fixed at "H" internally. bit 0 92 |
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