LM8560

UTC LM8560 DIGITAL ALARM CLOCK DESCRIPTION The LM8560 is alarm equipped digital clock IC with built-in driver capable of directly driving LED display equipment. As IC himself the VDD pin for the LM8560 is graded to withstand a voltage of 15V. MOS IC 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 *Supports changeover between 12-hour AM/PM and 24-hour displays *Built-in battery backup CR oscillator *Users 50Hz or 60Hz as standard frequency *Built-in automatic fast forward function for hour and minute settings *Built-in sleep timer function (maximum intervals of 59 minutes or 1 hours and 59 minutes) *Built-in snooze function supporting repeat use *Equipped with power failure display function *900Hz output for alarm tone SDIP-28 FUNCTIONS *Current time display *Snooze alarm function *Sleep timer function (maximum intervals of 59 minutes or 1 hours and 59 minutes) APPLICATIONS *Alarm clocks *Clock radios UTC UNISONIC TECHNOLOGIES CO., LTD. 1 QW-R502-005,D UTC LM8560 PIN CONFIGURATIONS AM& 10'S HR ag&de PM& 10'S HR b 10'S HR c& HR e HR b&g HR c&d HR a&f 10'S MIN a&f MOS IC 1 2 3 4 5 6 7 28 27 26 12/24 HR Select CR Input 50/60 Hz Select 25 50/60 Hz Input 24 Snooze Input 23 Sleep Display LM8560 22 Hour Set 21 20 19 18 Minute Set VDD Alarm Display Alarm OFF 10'S MIN b&g 8 10'S MIN c&d 9 10'S MIN e &Min e 10 MIN b&g 11 MIN c&d 12 MIN a&f 13 Colon Output 14 17 Sleep Output 16 15 Alarm Output VSS ABSOLUTE MAXIMUM RATINGS (Ta=25°C, Vss=0V) PARAMETER Maximum Supply Voltage Input Voltage1 Input Voltage2 Output Voltage Input Clamp Current Allowable Power Dissipation Operating Temperature Storage Temperature SYMBOL VDD (max) VIN1 VIN2 VOUT lIN PD (max) Topr Tstg TEST CONDITIONS 50/60Hz Input Except 50/60Hz Input 50/60Hz Input Ta=70°C RATING -15~ +0.3 -15~ +0.3 -15~ +0.3 -15~ +0.3 -0.4 ~+0.4 700 -30 ~ +70 -55 ~ +125 UNIT V V V V mA mW °C °C ALLOWABLE OPERATING RANGES (Ta=25°C, Vss=0V ) PARAMETER Supply Voltage Input “H” Level Voltage1 Input “L” Level Voltage1 Input “H” Level Voltage2 Input “L” Level Voltage2 50/60Hz Input Pin Input Voltage SYMBOL VDD VIH1 VIL1 VIH2 VIL2 VAC-IN TEST CONDITIONS 50/60Hz Input 50/60Hz Input Except 50/60Hz Input Except 50/60Hz Input Sets VSS as Reference MIN. -14 -1 -1.5 TYP. MAX. -7.5 VDD+2 VDD+2 UNIT V V V V V V VLED UTC UNISONIC TECHNOLOGIES CO., LTD. 2 QW-R502-005,D UTC LM8560 PARAMETER Input “H” Level Current 1 Input “L” Level Current 1 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 Output “H” Level Current 3 Output Leakage Current 3 Power failure detection Voltage Consumption Current Backup Oscillator Stability Factor Backup Oscillator Accuracy MOS IC SYMBOL IIH1 IIL1 IIH2 IIL2 IOH1 IOF1 IOH2 IOF2 IOH3 IOF3 VDD ICC FS FA Output set to off and Pull-down attached input set open Standard Value,900Hz, VDD=-9V±10%-10 Standard Value,900Hz, VDD=-9V-10 ELECTRICAL CHARACTERISTICS (Ta=25°C, VDD=-12V unless otherwise specified) TEST CONDITIONS 50/60Hz Input, VIN=VSS 50/60Hz Input, VIN=VDD Input Pins Other Than 50/60Hz Input VIN=VSS Input Pins Other Than 50/60Hz Input VIN=VDD Alarm Output and Sleep Output VOH=VSS-1V Alarm Output and Sleep Output VOUT=VDD AM & 10’S HR ag & de (24H mode) VOUT=VDD-1V AM & 10’S HR ag & de (24H mode) VOUT=VDD Segment Output Other Than Those VOUT=VSS-1V Segment Output Other Than Those Listed Above, VOUT=VDD MIN. TYP. MAX. 10 10 20 10 UNIT µA µA µA µA mA 5 10 36 20 18 20 -7.5 -5 5 -10 -10 7 10 10 µA mA µA mA µA V mA % % DESCRIPTION OF OPERATIONS *50/60Hz Input: Built-in Shumidt circuit enables noise eliminations at 50/60Hz commercial frequencies with use of a simple CR filter. Built-in pull-up resistor. *CR Input: 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 continues 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 of this clock oscillator is determined according to the CR 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. *50/60 Selective Input: When 50/60 selective input is connected to VSS, 50Hz use is enabled. When 50/60 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 1 shows these display mode selections. UTC UNISONIC TECHNOLOGIES CO., LTD. 3 QW-R502-005,D UTC LM8560 Table1 Display Modes Selective lnput Alarm Sleep NC NC Display Mode Time display Digit No. 1 10’s place for hour, AM/PM 10’s place for hour, AM/PM Digit No. 2 Hour MOS IC Digit No. 3 Digit No.4 10’s place for Minute Minute 10’s place for VSS NC Alarm display Hour Minute Minute 10’s place for NC VSS Sleep display Clear Hour Minute Minute 10”s place for VSS VSS Second display Clear Minute Second Second Note: Activating VSS using two inputs simultaneously (alarm select and sleep select), the display mode is switched to display seconds. *Time Setting Input: There are two setting inputs for use with “hour” and “minute”. Time content settings show in Table2 are possible by activating VSS to these pins, A pull-down resistor is built-in. Table2 Setting contents Functions Immediately 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. Min Immediately adds 1 to minute digits and then assigns an additional 1, at a speed of 2 Hz, after each 1/4 to 3/4 second. Seconds are rest. Both Operates both as outline above. Second Hour (note1) Second digits are cleared to [00]. (Alarm & Sleep) Min Time holds. Both (note2) Resets hour and minute digits as [0:00] when operating in 24-H mode or [12:00] when operating in 12-H mode. Alarm Hour Immediately 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. Min Immediately adds 1 to minute digits and then assigns an additional 1, at a speed of 2 Hz, after each 1/4 to 3/4 second. Both Resets hour and minute digits as [0:00] when operating in 24-hour mode or [12:00] when operating in 12-hour mode. Sleep Sets sleep counter to [0:59] instantly when VDD is activated to sleep select Hour 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. Note:1.Once conditions have been switched to reset or hold, input of other functions is locked until both Hour and Min input have been separated. 2.When the digital reading for seconds is between 30 and 59 seconds, 1 is added to the digits for minutes as he digital reading for seconds rests to [00]. *12/24H Select Input : When this pin set open (VDD), a 12-hour display is enabled whereas connecting this pin to VSS enables the 24-hour display. A pull-down resistor is build-in. *Power Failure Detection Display : Display Mode Time Set Input Hour UTC UNISONIC TECHNOLOGIES CO., LTD. 4 QW-R502-005,D UTC LM8560 MOS IC When activated by drop in power supply, all segments which are lit begin to blink and the unit switches to a power failure detection display. The power failure detection display is canceled by activating VSS to Hours set or Min set. *Alarm Operation and Alarm Output : The alarm signal outputs when alarm content matches the content of current time. When not rest by either snooze input or alarm off input, output continues after 1 hour and 59 minutes. This output signal consists of 900Hz 2Hz intermittent (50% duty) modulation signals, When the need arises , a filter can be applied to after the alarm signal to a DC signal. *Snooze Input : 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 1 hours and 59 minutes intervals. A pull-down resistor 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.) *Alarm Off Input : Activating this input pin to VSS instantly sets alarm output to OFF.A pull-down resistor is built-in. *Sleep Timer and Sleep Output : Sleep output can turn on the radio and can be set for time intervals of 59 minutes or 1 hour and 59 minute. Refer to Table 2 for the proper selection procedure (59 minutes or 1 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. UTC UNISONIC TECHNOLOGIES CO., LTD. 5 QW-R502-005,D UTC 50/60 Hz Select 26 2Hz OSC 1Hz GATE TDisp & S.Sample PF. DET SEC CTR S.Sample F.Sample Sec 2Hz Time&S.Sample Time&F.Sample Comparator Time PWR UP Reset Control Time min.CTR Time HR.CTR GATE 3 4 5 6 7 Alarm 8 9 Sleep PWR Control UP Output Control 10 11 12 13 20 15 VSS Colon Output VDD 14 18 Alarm OFF 16 Alarm Output 17 10'S MIN e&Min e MIN b&g MIN c&d MIN a&f Blank& Flash 2 1/25 or 1/30 1/2 50/60 Hz 1 Tone Standby DET 50/60Hz CTR AM&10'S HR ag&de PM&10'S HR b 10'S HR c&HRe HR b&g HR c&d HR a&f 10'S MIN a&f 10'S MIN b&g 10'S MIN c&d 28 12/24 HR Select Input Control Display Control Disp AL Disp SL Disp Time&F.Sample Alarm&F.Sample Sleep CTR Sec RSTYHLD T.RST AL.RST PWR UP SEC Disp T Alarm MIN CTR Alarm HR CTR Output Decoder/Driver Second Display BLOCK DIAGRAM UTC LM8560 CR Input 27 50/60Hz Input 25 Minute Set 21 Hour Set 22 AlarmDisplay 19 Sleep Display 23 Snooze Input 24 UNISONIC TECHNOLOGIES CO., LTD. Sleep Output MOS IC 6 QW-R502-005,D C1 0.015μ f=900Hz 4.7k 27k 2.2k 0.47 μ 4.7k 15 VSS UTC 27k R1 110k 0.001μ + 28 20 18 16 Sleep Alarm Output Output UTC LM8560 12 HR NC 2.2k 25 17 50/60 Snooze Sleep Input Display Hz Input Hour Set Minute VDD Alarm Alarm Set Display OFF 27 50/60 Hz Select 60 HZ NC 26 24 23 22 21 19 Backup 100k Battery 12/24 CR Input HR Select LM8560 AM& 10'S PM& HR 10'S ag&de HR b 10'S HR c& HR e HR b&g HR c&d MIN b&g MIN c&d MIN a&f HR a&f Colon Output 10'S MIN a&f 10'S MIN b&g 10'S MIN c&d 10'S MIN e &Min e 1 3 4 7 8 9 10 11 12 5 6 2 13 14 Duplex LED + cycle 1 Cathode Common cycle 2 2 Note: 1 f e AC a g d b c CLOCK-RADIO APPLICATION CIRCUIT (Positive Power Supply) This circuit is used as noise interference stripper for the LW band.(Backup control is enalbled except for battery backup mode UNISONIC TECHNOLOGIES CO., LTD. Unit(resistor:Ω , capacitor : F) MOS IC 12 Hour Display and 60Hz Circuit Diagram 7 QW-R502-005,D UTC Piezo Buzzer C1 0.015μ R1 110k + 330μ f=900Hz μ 12 HR 0.001 NC 28 21 20 19 18 16 VSS UTC LM8560 27 24 17 15 Hour Set Alarm Alarm Sleep Alarm Display OFF Output Output Minute VDD Set 60 HZ NC 26 25 22 23 50/60 50/60 Snooze Sleep Input Display Hz Hz Select Input 100k 12/24 HR Select CR Input LM8560 AM& 10'S HR 10'S HR c& HR HR e b&g HR c&d HR a&f PM& 10'S HR b 10'S MIN a&f 10'S MIN c&d 10'S MIN e MIN &Min e b&g 10'S MIN b&g MIN c&d MIN a&f Colon Output CLOCK APPLICATION CIRCUIT (Negative Power Supply) 1 2 4 7 8 9 3 6 5 10 11 12 13 14 Duplex LED AC cycle 1 Cathode Common cycle 2 Note: 1. f e a g d b c UNISONIC TECHNOLOGIES CO., LTD. Unit(resistor:Ω , capacitor : F) MOS IC 2. When Battery backup or tone output is not used,CR input is conneced to Vss QW-R502-005,D 12 Hour Display and 60Hz Circuit Diagram 8 UTC LM8560 MOS IC UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. UTC UNISONIC TECHNOLOGIES CO., LTD. 9 QW-R502-005,D