SC8562 DIGITAL ALARM CLOCK WITH LED DRIVER DESCRIPTION The SC8562 is alarm equipped digital clock IC with built-in drivers capable of directly driving LED display equipment.SC8562 has features such as easy setting, two alarms and can be used at a wide operating voltage range. FEATURES * Duplex LED display (SC8560-use LED panel usable) * Two alarms on chip (600Hz, 1200Hz) * Up, down /fast, slow time setting available (easy setting) SDIP-28-400-1.778 * 12/24-hour mode, 50/60 Hz selectable (provided that it is impossible to select the combination of 24-hour mode and 60 Hz) * On–chip CR oscillator for backup use at the time of power failure * Power failure indicator ORDERING INFORMATION Device Package SC8562 SDIP-28-400-1.778 * 59-minute alarm/sleep timer * 6-minute snooze function * Radio output function * P-channel ED MOS * Pin 28 dual-in-line shrink package APPLICATIONS * Alarm clocks * Clock-radios * Wide operating voltage/operating temperature range VDD=-14 to -8V/ -20 to +70°C HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http://www.silan.com.cn REV: 1.1 2008.04.29 Page 1 of 10 SC8562 BLOCK DIAGRAM ABSOLUTE MAXIMUM RATINGS (Tamb =25°C, Vss =0V) Characteristics Supply Voltage Input Voltage Symbol Condition Value Unit VDD max. -17.0 ~ + 0.3 V VIN -17.0 ~ + 0.3 V Output Voltage VOUT -17.0 ~ + 0.3 V Allowable Power Dissipation Pd max 700 mW Tamb=70°C Operating Temperature Topr -20 ~ +70 °C Storage Temperature Tstg -55～+125 °C ALLOWABLE OPERATING CONDITIONS (Tamb=-20 to 70°C, VSS=0V) Characteristics Symbol Test conditions Min. Typ. Max. Unit -8 V -7.5 V VSS V VDD+2 V VSS V VDD+2 V VSS-0.7 VSS V Supply Voltage VDD -14.0 Standby Voltage VST Input High-Level Voltage 1 VIH1 Input Low-Level Voltage 1 VIL1 Input High-Level Voltage 2 VIH2 Input Low-Level Voltage 2 VIL2 Input High-Level Voltage 3 VIH3 Input Mid-Level Voltage VIM 1/2 VDD-1 1/2 VDD+1 V Input Low-Level Voltage 3 VIL3 VDD VDD+1 V AC input pin CR OSC pin 3-level input pins HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http://www.silan.com.cn VSS-1 VSS-1 REV: 1.1 2008.04.29 Page 2 of 10 SC8562 Characteristics Symbol Test conditions Min. Input High-Level Voltage 4 VIH4 Input pins other than the above VSS-2 Input Low-Level Voltage 4 VIL4 Typ. Max. Unit VSS V VDD+2 V Input Level Hold Time tH 10 ms Input Chattering Time tC 10 ms ELECTRICAL CHARACTERISTICS (Tamb=25±2°C, VSS=0V, VDD=-12V) Characteristics Output High-Level Current 1 Output OFF-State Leakage Current 1 Symbol IOH1 IOF1 Test conditions AM&10’SHR ad & eg pin, VOUT =VSS-2.0V Min. Typ. 32 Max. Unit (Note1) mA 20 μA (Note1) mA 20 μA VOUT = VDD Segment output pins other Output High-Level Current 2 IOH2 than the above, 16 VOUT=VSS-2.0V Output OFF-State Leakage Current 2 Output High-Level Current 3 Output OFF-State Leakage Current 3 IOF2 IOH3 IOF3 VOUT = VDD ALM-1, ALM-2, RADIO pin, VOUT=VSS-2.0V 2 mA VOUT = VDD Operating Frequency fop AC INPUT pin Input High Level Current 1 IIH1 VIH=VSS Input Low Level Current 1 IIL1 VIL=VDD Input High Level Current 2 IIH2 CR OSC pin, VIH=VSS Input Low Level Current 2 IIL2 VIL=VDD Input High Level Current 3 IIH3 3-level input pins, VIH=VSS Input Low Level Current 3 IIL3 VIL=VDD DC 10 μA 2000 Hz 10 μA μA -10 10 μA μA 60 20 120 μA -120 -20 μA Pull-Down Resistance RPD 3-level input pins, VIN=1/2VDD 1.0 MΩ Pull-Up Resistance RPU VIN=1/2VDD 0.8 MΩ Operating Current IDD Power Failure Detect Circuit VBU Output :no load 2 8 -7.5 -5.0 15 mA V OSC Stability fS VDD=-9V±10% -10 10 % OSC Accuracy fA VDD=-9V -10 10 % OSC Frequency fOSC R=180KΩ, C=3300pF 3600 R=260KΩ, C=3300pF 2400 Hz Note1: The allowable segment current drain is 78mA max. for AM & 10’SHR ad & eg and 39mA max. For other than AM & 10’SHR ad & dg in the range of power dissipation 700 mW. HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http://www.silan.com.cn REV: 1.1 2008.04.29 Page 3 of 10 SC8562 PIN CONFIGURATIONS PIN DESCRIPTION No. Pin Name 1 AM & 10’ SHR ad & eg Description Drive AM 10’sSHR segment and 10’SHR segment. 2 PM & 10’ SHR b Drive PM and 10’SHR b segment. 3 10’SHR c & HR e Drive HR e and 10’SHR c segment. 4 HR g & b Drive HR g and HR b segment. 5 HR d & c Drive HR d and HR c segment. 6 HR f & a Drive HR f and HR a segment. 7 10’ SMIN a & f Drive 10’SMIN a and 10’SMIN f segment. 8 10’ SMIN b & g Drive 10’SMIN b and 10’SMIN g segment 9 10’ SMIN c & d Drive 10’SMIN c and 10’SMIN d segment. 10 10’ SMIN e & MIN e Drive MIN e and 10’ SMIN e segment. 11 MIN g& b Drive MIN g and MIN b segment. 12 MIN d & c Drive MIN d and MIN c segment. 13 MIN f & a Drive MIN f and MIN a segment. 14 COLON Colon output 15 VSS VSS=0V 16 CR OSC Oscillator input/output port, connected external capacitor and resistor. 17 SPEED/PD mode; and if connect to VSS, test mode is selected. Select normal mode in SPEED/Power down control pin. When connect to VDD, select power-down open state. 18 RADIO Radio output pin. HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http://www.silan.com.cn REV: 1.1 2008.04.29 Page 4 of 10 SC8562 No. Pin Name 19 ALM_1 20 ALM_2 21 ALM_SEL Description Alarm output pin, when connect to VDD, alarm is turned off. LED Display mode select pin 1 22 TIME_SET Time set pin. 23 ON/OFF Pin controlling alarm and radio output state 24 SLEEP/SNOOZE LED Display mode select pin 2 25 AC INPUT 26 MODE_SEL Built-in Schmidt circuit enables noise elimination at 50/60Hz commercial frequencies with use of a simple CR filter, Built-in pull-up resistor. Mode select pin. If connect to VDD, select 12H &60Hz mode; if connect to VSS, select 24H&50Hz mode; if open, then select 12H &50Hz. Time setting enable and dimmer display control pin. If connect to VDD, time 27 setting enable and LED display normally; If connect to VSS, time setting inhibit TIME_SET_EN/DIM (except alarm setting) and LED dimmer display; if open, time setting inhibit and LED display normally. 28 VDD Negative power supply. DISPLAY MODE Select Pin ALM_SEL Display Digit No, Mode SLEEP/SNOOZE OPEN OPEN Time display VDD OPEN Alarm 1 VSS OPEN Alarm 2 OPEN(VDD,VSS) VSS Sleep OPEN(VDD,VSS) VDD 1 2 AM/PM Hour 10’s hour AM/PM Hour 10’s hour AM/PM Hour 10’s hour Second display Unlit 0 Unlit Minutes 3 10’s minutes 10’s minutes 10’s minutes 10’s minutes 10’s seconds 4 Minutes Minutes Minutes Minutes Seconds FUNCTION DESCRIPTION 1. Segment Output The duplex LED panel can be direct driven by 13 segment output pins. Compatible with SC8560-use LED panel) 2. Colon Output LED panel HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http://www.silan.com.cn REV: 1.1 2008.04.29 Page 5 of 10 SC8562 a AM f PM Conol b g e c d The drive phase 1. The colon always flashes at 1 Hz rate. 3. OSC circuit By connecting a resistor and a capacitor with the CR INPUT pin, a 2.4 kHz OSC circuit is formed, The clock signal generated by the 2.4 kHz OSC circuit is used in the following cases. (1) Used as the clock signal for the time counter, instead of 50/60 Hz INPUT, when the power-down mode is entered. (2) Alarm sound (1200Hz or 600 Hz) at the alarm signal output mode. (3) 1/25 duty clock signal while the dimmer is in operation. 4. Power-Down Mode (1) Since the backup OSC circuit holds the current time, the SC8562 starts operating immediately. (2) The snooze function stops operating. (3) The RADIO pin is brought to the OFF state. (4) The control input is inhibited (except the following). • OFF INPUT • ALARM/SLEEP TIME SET INPUT at the time setting enable mode 5. Alarm The SC8562 contains two alarms on a 24-hour basis. Alarm 1….. Superposition of 600 Hz and 1 Hz Alarm 2 …. Superposition of 1200 Hz and 1 Hz 6-minutes snooze The alarm output duration time is 59 minutes. The 59-minute duration counter is common to the alarm 1, alarm 2, and sleep timer. 6. Time Setting, Dimmer The 3-level input TIME_SET pin provides the following operations. TIME_SET pin Input VDD AC(50/60 Hz or more) Fast-up DC(20 ms min.) Slow-up OPEN VSS Operations No operation AC(50/60 Hz or more) Fast-down DC(20 ms min.) Slow-down Setting Contents ① Fast-up/down 50/60 Hz rate HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http://www.silan.com.cn REV: 1.1 2008.04.29 Page 6 of 10 SC8562 ② Slow-up/down Immediately incremented/decremented ± 1 and counted up/down at a 2 Hz rate 0.5 to 1.0 second later 7. ON/OFF Pin The 3-level input ON/OFF pin acts on the ALM-1, 2 RADIO pins as shown below. Output Pin Pause ON-State Condition OFF-State Conditions Conditions • ON/OFF =VSS ALM-1 Alarm 1 setting time = Current time • ON/OFF = VDD Snooze-in • Sleep-in • 59 minutes after the alarm 2 is turned ON • ALM-1 =VDD • ON/OFF = VSS ALM-2 Alarm 2 setting time = Current time • ON/OFF =VDD Snooze-in • Sleep-in • 59 minutes after the alarm 2 turned ON • ALM-2 =VDD • ON/OFF =VDD ON/OFF = VDD (ON-state indicator: ON - state) • Power –down mode • Sleep-in (On-state indicator: OFF state) RADIO • ON/OFF =VSS Sleep-in (Sleep indicator : ON state) - • ON/OFF =VDD • Power-down mode (Sleep indicator : OFF state) 8. Sleep, Snooze Timer The 3-level input SLEEP/SNOOZE pin operates as shown below. SLEEP/SNOOZE Pin Input Operation Snooze-in & seconds display mode. VDD (20 ms min.) • Time alarm stops functioning for 6 to 7 minutes. • Seconds display OPEN No operation Sleep mode VSS (20 ms min.) • The sleep counter is set to operate for 59 minutes. • Counted down automatically at a 2 Hz rate 1.5 to 2.0 seconds later • Fast/slow, up/down time setting available 9. 50/60HZ Input Internal Schmitt flip-flop can remove the noise in AC. HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http://www.silan.com.cn REV: 1.1 2008.04.29 Page 7 of 10 SC8562 3300p 0.01μ TYPICAL APPLICATION CIRCUIT HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http://www.silan.com.cn REV: 1.1 2008.04.29 Page 8 of 10 SC8562 PACKAGE OUTLINE SDIP-28-400-1.778 UNIT: mm HANDLING MOS DEVICES: Electrostatic charges can exist in many things. All of our MOS devices are internally protected against electrostatic discharge but they can be damaged if the following precautions are not taken: • Persons at a work bench should be earthed via a wrist strap. • Equipment cases should be earthed. • All tools used during assembly, including soldering tools and solder baths, must be earthed. • MOS devices should be packed for dispatch in antistatic/conductive containers. HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http://www.silan.com.cn REV: 1.1 2008.04.29 Page 9 of 10