Silan Semiconductors SC8560 DIGITAL ALARM CLOCK DESCRIPTION The SC8560 is an alarm equipped digital clock IC with built-in drivers capable of directly driving LED display equipment. SOP-28 FEATURES * Single chip P-channel ED MOS LSI * LED direct drive using time division (duplex configuration) * Wide operating power supply voltage range * Built-in alarm function with 24-hour control SDIP-28 * Supports changeover between 12-hour AM/PM and 24-hour displays * Built-in battery backup CR oscillator * Built-in automatic fast forward function for hour and minute ORDERING INFORMATION settings * Built-in snooze function supporting repeat use * Uses 50Hz as standard frequency * Built-in sleep timer function (maximum intervals for 59 minutes or Part No. Package SC8560 SDIP-28-400-1.778 SC8560S SOP-28-375-1.27 1 hour and 59 minutes) * Equipped with power failure display function APPLICATIONS * 900Hz output for alarm tone * Alarm clocks * Clock-radios PIN CONFIGURATIONS AM & 10'S HR ag & de 1 28 12/24 HR SELECT PM & 10'S HR b 2 27 CR INPUT 10'S HR c & HR c 3 26 50/60Hz SELECT HR b & g 4 25 50/60Hz INPUT HR c & d 5 24 SNOOZE INPUT HR a & f 6 23 SLEEP INPUT 10'S MIN a & f 7 10'S MIN b & g 8 10'S MIN c & d 9 SC8560 22 HOUR SET 21 MIN SET 20 VDD 10'S MIN e & MIN e 10 19 ALARM DISP MIN b & g 11 18 ALARM OFF MIN c & d 12 17 SLEEP OUT MIN a & f 13 16 ALARM OUT COLON OUT 14 15 VSS HANGZHOU SILAN MICROELECTRONICS CO.,LTD. Rev: 1.1 1 2003.06.26 21 19 23 24 Alarm Display Sleep Display Snooze Input Hour 22 Set Minute Set 50/60Hz 25 Input CR 27 Input OSC PWR UP CTR Reset Control Stand by DET Tone 15 VSS 20 VDD Second display 2 Display Control 2Hz SEC Disp T. Disp AL. Disp SL. Disp PWR UP Time HR. CTR GATE T Disp & S. Sample Time & F. Sample 1Hz Control Sleep CTR Time & F. Sample 18 Alarm OFF Output Control PWR UP Alarm & F. Sample Alarm HR. CTR Comparator Alarm MIN CTR Time & S. Sample 14 Colon Output F. Sample SEC CTR 2Hz 1/2 Time MIN. CTR 1/25 or 1/30 S. Sample 50/60Hz Sec RSTYHLD T. RST AL. RST Input Control GATE 26 Sec Blank & Flash 50/60Hz 16 17 Alarm Sleep Output Output Sleep Alarm Time PF. DET 12/24HR Select 28 Output Decoder/Driver 50/60Hz Select 13 Min a&f 12 Min c&d 11 Min b&g 10 10'S MIN e& Min e 9 10'S MIN c&d 8 10'S MIN b&g 7 10'S MIN a&f 6 HR a&f 5 HR c&d 4 HR b&g 3 10'S HR c& HR c 2 PM & 10'S HR b 1 AM & 10'S HR ag & de Silan Semiconductors SC8560 BLOCK DIAGRAM HANGZHOU SILAN MICROELECTRONICS CO.,LTD. Rev: 1.1 2003.06.26 Silan Semiconductors SC8560 ABSOLUTE MAXIMUM RATINGS(Ta =25°C, Vss =0V) Characteristic Symbol Maximum Supply Voltage VDD max. Condition Value Unit -15.0 ~ + 0.3 V Input Voltage 1 VIN(1) 50/60Hz input -15.0 ~ + 0.3 V Input Voltage 2 (except pin 26) VIN(2) Except 50/60Hz input -15.0 ~ + 0.3 V Output Voltage VOUT -15.0 ~ + 0.3 V Input Clamp current( pin 26) IIN 50/60Hz input Allowable Power Dissipation PD Ta=70°C -0.4 ~ +0.4 mA 700 mW Operating Temperature Topr -30 ~ +70 °C Storage Temperature Tstg -55 +125 °C ELECTRICAL CHARACTERISTICS (Tamb=25°C, VDD=-12.0V, VSS=0V,Unless otherwise specified) Parameter Supply Voltage Symbol Test conditions Max Unit -7.5 V VDD+2 V VDD+2 V 50/60Hz Input, VIN=VSS 10 μA 50/60Hz Input, VIN=VDD 10 μA Input pins other than 50/60Hz 20 μA 10 μA VDD VIH(1) 50/60Hz Input Input “L” level Voltage VIL(1) 50/60Hz Input Input “H” level Voltage VIH(2) Except 50/60Hz input Input “L” level Voltage VIL(2) Except 50/60Hz input 50/60 Hz input pin input voltage VAC-IN IIH1 Input “L” level current(1) IIL1 Input “H” level current(2) Input “L” level current(2) Output “H” level current(1) Output leakage current(1) Output “H” level current(2) Output leakage current(2) IIH2 IIL2 IOH1 IOF1 IOH2 IOF2 Output “H” level current(3) -1.0 V -1.5 V VLED V Input,VIN=VSS Input pins other than 50/60Hz Input,VIN=VDD Alarm output and sleep output, 5 mA VOH=VSS-1V Alarm output and sleep output, 10 μA VOUT=VDD AM& 10’S HR ag&de (24H 36 mA mode),VOUT=VDD-1V AM& 10’S HR ag&de (24H 20 μA mode),VOUT=VDD Segment Output other than IOH3 Typ -14.0 Input “H” level Voltage Input “H” level current(1) Min 18 mA those listed above , VOUT=Vss1V (To be continued) HANGZHOU SILAN MICROELECTRONICS CO.,LTD. Rev: 1.1 3 2003.06.26 Silan Semiconductors SC8560 (Continued) Parameter Symbol Output leakage current(3) IOF3 Power failure detection voltage Test conditions ICC Backup oscillator stability factor fs Backup oscillator accuracy fa Typ Max Unit 20 μA 7 mA -10 10 % -10 10 % those listed above, VOUT=VDD VDF Consumption current Min Segment Output other than -7.5 Output set to off and pull-down -5.0 V 5 attached input set to open Standard value,900Hz, VDD= -9V 10% Standard value,900Hz, VDD= -9V DESCRIPTION OF OPERATIONS Terminal Description Operating Description Built-in Shumidt circuit enable noise elimination at 50/60Hz commercial 50/60 Hz Input: frequencies with use of a simple CR filter. Built-in pull-up resistor. When the AC power supply is interrupted, the time counter switches to a holding state and a built-in oscillator promptly begins operation. If 50/60Hz input continuous for 3 clocks without arriving, this oscillator’s output is activated and functions as the time counter clock in place of 50/60Hz input. The frequency level CR Input of this clock oscillator is determined according to the CK Value. While the above mentioned oscillator is operating using backup mode, all segment output is switched to OFF. (Note) When the backup oscillator is in use due to an AC power supply interruption, the 50/60Hz input pin must be maintained open or at a Vss level. When 50/60 selective input is connected to Vss,50Hz use is enable. When 50/60 50/60Hz Selective Input selective input is left open, VDD is activated using an internal pull-down resistor and the setting is switched to enable use at 60Hz. Display Mode Selective Input (Alarm Select/Sleep Select ) Since the pull-down resistor is built-in, selection from four display modes is possible using two SPST switches (single-pole and single-throw switches). Table l shows these display mode selections. There are two setting inputs for use with “hour” and “minute”. Time content Time Setting Input settings shown in Table 2 are possible by activating Vss to these pins. A pull-down resister is built-in. Leaving this pin unconnected (VDD) causes the 12-hour basis to be selected, 12/24H Select Input connecting this pin to VSS cause the 24-hour basis to be selected .An internal pulldown resistor is provided. (To be continued) HANGZHOU SILAN MICROELECTRONICS CO.,LTD. Rev: 1.1 4 2003.06.26 Silan Semiconductors SC8560 (Continued) Terminal Description Operating Description If the power supply voltage drops and is applied again, all the on-segments flash Power Failure Detection display and the power failure indication mode is entered. The power failure indication mode is released by applying VSS to “hour set” or “ minutes set”. The alarm signal outputs when alarm content marches the time .When not reset Alarm Operation and Alarm Output by either snooze input or alarm off input, output continues after l hour and 59 minutes. This output signal consists of 900 Hz 2 Hz intermittent (50% duty) modulation signals. When the need arises, a filter can be applied to alter the alarm signal to a DC signal. When the alarm is sounding and instantly activating Vss to this pin, alarm output is set to OFF for a period between 8 and 9 minutes after which time the alarm signal is once again output .The snooze function can be used repeatedly in l hour and 59 Snooze Input minutes intervals. A pull-down resist is built-in. Activating Vss to the snooze pin when the alarm is OFF resets the sleep timer counter to [0:00].(This is known as the one-touch sleep timer reset function.) Activating this input pin to Vss instantly sets alarm output to OFF. A pull-down Alarm Off Input resistor is built-in. Sleep output can turn on the radio and can be set for time intervals of 59 minutes or l hour and 59 minutes. Refer to Table 2 for the proper selection procedure (59 Sleep Timer and Sleep Output: minutes or l hour and 59 minute selection). This sleep timer is constructed using a down counter and when the counter content arrives at [00], output is set to off and the radio turns off .Adding Vss to snooze input turns sleep output off, when sleep output is on. TABLE 1: DISPLAY MODES Selective Input Display Mode Alarm Sleep NC NC Time display Vss NC Alarm display NC Vss Sleep display Digit No.1 10’s place for hour ,AM/PM 10’s place for hour ,AM/PM Digit No.2 Hour Hour Hour Clear Vss Vss Second display Clear Minute Digit No.3 Digit No.4 10’s place for minute 10’s place for minute 10’s place for minute 10’s place for second Minute Minute Minute Second Note: Activating Vss using two inputs simultaneously (alarm select and sleep select), the display mode is switched to display seconds. HANGZHOU SILAN MICROELECTRONICS CO.,LTD. Rev: 1.1 5 2003.06.26 Silan Semiconductors SC8560 TABLE 2: SETTING CONTENTS Display Mode Set lnput HOUR Functions lmmediately adds 1 to hour digits and then assigns an additional 1. at a speed of 2 Hz , after each 1/4 to 3/4 second . lmmediately adds 1 to minute digits and then assigns an additional 1. at a Time MIN speed of 2 Hz, after each 1/4 to 3/4 second . Seconds are reset. BOTH Operates both as outline above. HOUR(Note) Second digits are cleared to [00]. Second MIN (Alarm&Sleep) BOTH HOUR Alarm MIN BOTH HOUR Sleep Time holds. Resets hour and minute digits as [0:00] when operating in 24-Hmode or [12:00] when operating in 12-H mode. lmmediately adds 1to hour digits and then assigns an additional 1, at a speed of 2 Hz, after each 1/4to 3/4 second. lmmediately adds 1 to minute digits and then assigns an additional 1, at a speed of 2 Hz, after each 1/4to 3/4 second. Resets hour and minute digits to [0:00] when operating in 24-hour mode or [12:00] when operating in, 12-hour mode. Sets sleep counter to [0:59] instantly when VDD is activated to sleep select. Sets sleep counter to [1:59] instantly when VDD is activated to sleep select and hour at the same time. MIN Sleep counter looses 1 at a speed of 2 Hz BOTH Sleep counter looses 1 at a speed of 2 Hz Once conditions have been switched to reset or hold, input of other functions is locked until HOUR and MIN input have separated. Note: When the digital reading for seconds is between 30 and 59 seconds, 1 is added to digits for minutes as the digital reading for seconds resets to [00] HANGZHOU SILAN MICROELECTRONICS CO.,LTD. Rev: 1.1 6 2003.06.26 AC Backup Battery 100kȍ 0.001μF 23 22 7 1 3 4 5 HR c&d 6 HR a&f 18 17 2.2kȍ 9 11 16 2 e f d g a 13 MIN a&f c b 14 Colon Out Vss 15 2.2kȍ 4.7kȍ 27kȍ 27kȍ This circuit is used as noise interference stripper for the LW band.( Backup control is enabled except for battery backup mode 12 NOTE: 1 10 10'S 10'S MIN MIN MIN MIN e & b&g c&d c & d MIN e Duplex LED 8 10'S MIN b&g Cathode Common 7 10'S MIN a&f 19 0.47μF Alarm Alarm Sleep Alarm Disp Off Out Out 12 Hour Display and 60Hz Circuit Diagram Cycle 2 Cycle 1 2 AM & PM & 10'S HR 10'S HR 10'S HR c & b&g ag & de HR b HR c SC8560 V DD 24 20 25 21 26 28 12/24 CR 50/60Hz 50/60Hz Snooze Sleep HOUR MIN HR Input Select Input Input Input Set Set Select 60Hz NC 12HR NC 27 R1=110kȍ f=900Hz 4.7kȍ C1=0.015μF Silan Semiconductors SC8560 CLOCK-RADIO APPLICATION CIRCUIT (Positive Power Supply) HANGZHOU SILAN MICROELECTRONICS CO.,LTD. Rev: 1.1 2003.06.26 AC C1 0.015μF R1 110kȍ 23 22 8 1 3 4 5 HR c&d 6 HR a&f 8 10'S MIN b&g 18 17 9 11 16 12 e f d g a 13 MIN a&f c b 14 Colon Out Vss 15 When Battery backup or tone output is not used, CR input is connected to Vss. 2 NOTE: 1 10 10'S 10'S MIN MIN MIN MIN e & b&g c&d c & d MIN e Cathode Common 7 10'S MIN a&f SC8560 19 Alarm Alarm Sleep Alarm Disp Off Out Out 12 Hours Display and 60Hz Circuit diagram Cycle 2 Cycle 1 2 AM & PM & 10'S HR 10'S HR 10'S HR c & b&g ag & de HR b HR c V DD 24 20 25 21 26 28 330μF 12/24 CR 50/60Hz 50/60Hz Snooze Sleep HOUR MIN HR Input Select Input Input Input Set Set Select 60Hz NC 12HR NC 27 f=900Hz Piezo Buzzer Silan Semiconductors SC8560 CLOCK APPLICATION CIRCUIT (Negative Power Supply) HANGZHOU SILAN MICROELECTRONICS CO.,LTD. Rev: 1.1 2003.06.26 100kȍ 0.001μF Silan Semiconductors SC8560 PACKAGE OUTLINE SDIP-28-400-1.778 UNIT:mm SOP-28-375-1.27 UNIT:mm HANGZHOU SILAN MICROELECTRONICS CO.,LTD. Rev: 1.1 9 2003.06.26 Silan Semiconductors SC8560 Attachment Revision History Data 2000.12.31 REV 1.0 Description Page Original Add ”SOP-28-375-1.27” 2003.06.26 1.1 1, 9 Add” ORDERING INFORMATION” 1 DEL”FUNCTIONS” 1 HANGZHOU SILAN MICROELECTRONICS CO.,LTD. Rev: 1.1 10 2003.06.26