HT1330 3 1/2 Digit Timer + Watch Features · · · · · · · A real time watch A 20-hour adjustable range setting count-down timer 20-minute count-up display cycle time 20 hours of count-up time maximum Auto recycle or manual reset the count-down timer by bonding option Hours and minutes are set independently Real time display in timer mode · · · · · · · · 5-minute/10-minute pre-alarm DC output and piezo output An internal voltage doubler Busy flag output high in timer counting 3 1/2 digit LCD display 32768Hz crystal oscillator Single 1.5V battery operation 48L-pin QFP package General Description The HT1330 is a CMOS fabricated LSI chip designed to drive a standard three and 1/2 digit biplexed LCD for a count-up/down timer in watch applications. The watch and timer are based on a 32768Hz quartz crystal oscillator. The maximum count-down time is 20 hours with an accuracy of 1 second. The maximum count-up period is 20 hours, but the LCD will normally display a maximum period of 19 minutes and 59 seconds. If the user presses switch ²S2², the total count-up time in hours and minutes will be displayed. In the count-up/down mode, the real time can be seen by pressing switch ²S1² and return to the count-up/down mode by releasing ²S1². Once the count-down is finished, the timer can either automatically recycle the preset time or manually reset the desired time depending on the selected bonding-pad option. The forecast alarm generates 4 alarm sounds at 10 minutes before set time and 8 alarm sounds at 5 minutes before set time. The HT1330 can be used as a parking timer, an alarm timer, a pill box timer, a kitchen timer, a sports timer, etc. Pin Assignment C O O S O S B U M 2 C 1 C 2 N C N C N C N C N C N C S Y T 2 N C N C 1 N C T 1 V S S V D D N C O P B Z B Z B S 3 N C 3 2 N C 1 1 1 9 8 7 6 5 4 4 8 4 7 4 6 4 5 4 4 4 3 4 2 4 1 4 0 3 9 3 8 3 7 3 3 3 3 3 3 H T 1 3 3 0 3 4 8 L Q F P 2 2 2 0 2 1 2 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 2 1 2 2 2 3 2 4 6 5 4 3 2 1 0 9 8 7 6 5 K D 1 F E 1 A G 1 B C 1 N C C O D 3 F E 2 A D G 2 B C 2 F E 3 A G 3 B C 3 C O M 1 N C N C N C C A P 1 N C C A P 2 V E E S 1 N C S 2 N C 1 August 10, 2000 HT1330 Pad Assignment 4 C A P 2 5 C A P 1 6 2 9 2 8 2 7 2 6 2 5 2 4 2 3 2 2 B U S Y 2 1 O S C 2 2 0 O S C 1 1 3 1 4 1 5 1 6 A D G 2 F E 2 C O D 3 B C 1 A G 1 1 7 1 8 1 9 C O M 2 1 2 K D 1 1 1 F E 1 1 0 B C 2 9 F E 3 8 A G 3 7 (0 ,0 ) B C 3 C O M 1 T 2 V E E T 1 3 V S S S 1 V D D 2 O P S 2 B Z 1 B Z B S 3 Pad Coordinates Unit: mil Pad No. X Y 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 -62.7 -62.7 -62.7 -62.7 -62.7 -62.7 -62.7 -52.7 -42.7 -32.7 -22.7 -12.7 -2.7 7.3 17.3 58.7 48.7 30.1 17.2 7.3 -18.7 -58.7 -58.7 -58.7 -58.7 -58.7 -58.7 -58.7 -58.7 -58.7 Pad No. X Y 16 17 18 19 20 21 22 23 24 25 26 27 28 29 27.3 37.3 47.3 58.3 62.7 62.7 62.7 62.7 43.8 33.8 5.8 -4.3 -38.6 -48.6 -58.7 -58.7 -58.7 -58.7 -38.8 -23.7 48.6 58.7 58.7 58.7 58.7 58.7 58.7 58.7 2 Chip size: 119 ´ 112 (mil) * The IC substrate should be connected to VDD in the PCB layout artwork. Operational Sequence S 3 P o w e r o n R e a l T im e S e ttin g S 3 > 5 s e c R e a l T im e S 1 /S 2 C o u n t-d o w n T im e S e ttin g S 1 o r S 2 S 3 S 1 /S 2 /S 3 U p /D o w n T im e r S 1 /S 2 S 3 C o u n t- d o w n T im e r C o u n t- u p T im e r S 1 /S 2 o r S 1 /S 2 /S 3 S 1 /S 2 o r S 1 /S 2 /S 3 Note: S1 for Hour setting S2 for Minute setting S3 to Start/Stop the timer S3>5 seconds into the real time setting mode S1/S2 to reset the timer to the initial state (0:00) S1/S2/S3 to return to the real time mode 2 August 10, 2000 HT1330 Pin/Pad Description Pin No. Pad No. Pad Name I/O Description 11 1 S3 I Input to start/stop the timer 14 2 S2 I Input for minute setting 16 3 S1 I Input for hour setting 17 4 VEE ¾ Negative voltage supply for LCD display 18 5 CAP2 O For voltage doubling capacitor 20 6 CAP1 O For voltage doubling capacitor 24 7 COM1 O Common 1 drive 25 8 BC3 O Segment drive 26 9 AG3 O Segment drive 27 10 FE3 O Segment drive 28 11 BC2 O Segment drive 29 12 ADG2 O Segment drive 30 13 FE2 O Segment drive 31 14 COD3 O Segment drive 33 15 BC1 O Segment drive 34 16 AG1 O Segment drive 35 17 FE1 O Segment drive 36 18 KD1 O Segment drive 37 19 COM2 O Common 2 drive 38 20 OSC1 I Oscillator input 39 21 OSC2 O Oscillator output 46 22 BUSY O Timer busy flag, active high 47 23 T2 I/O Chip test pin 4 24 T1 I/O Fast-test control pin 5 25 VSS ¾ Negative power supply 6 26 VDD ¾ Positive power supply 8 27 OP I Option pin for countdown recycle 9 28 BZ O Piezo drive 10 29 BZB O Piezo drive 3 August 10, 2000 HT1330 Absolute Maximum Rating Supply Voltage.................................-0.3V to 5V Storage Temperature.................-50°C to 125°C Input Voltage .................VSS-0.3V to VDD+0.3V Operating Temperature ................-0°C to 70°C Note: These are stress ratings only. Stresses exceeding the range specified under ²Absolute Maximum Ratings² may cause substantial damage to the device. Functional operation of this device at other conditions beyond those listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability. Electric Characteristics Symbol Parameter Ta=25°C Test Conditions VDD Conditions ¾ VDD Supply Voltage 1.5V IDD Operating Current 1.5V VEE Display Voltage IIN Switch Input Current 1.5V VSTR Osc Starting Voltage ¾ Df/f Frequency Stability 1.25~1.7V IOHA Alarm Output Drive Current 1.5V fOUT Alarm Output Frequency 1.5V IOHF Busy Flag Output Drive Current 1.5V fosc=32768Hz No load 1.25~1.7V ¾ VIN=VDD Within 3 secs ¾ VOH=1.35V ¾ VOH=1.35V Min. Typ. Max. Unit 1.25 1.50 1.70 V ¾ ¾ 2 mA -1.2 -1.5 -1.7 V 5 ¾ 65 mA 1.35 ¾ ¾ V ¾ ¾ 10 PPM -480 ¾ ¾ mA ¾ 4096 ¾ Hz -480 ¾ ¾ mA Functional Description be shown instead. When power is turned on, all the LCD segments are illuminated to display ²18:88² and the alarm sounds 2 seconds. In the count-up mode, the LCD display is normally in minutes and seconds where the maximum count-up period is 20 minutes. If ²S2² is pressed, the LCD display will revert to hours and minutes and the maximum count-up time will turn out to be 20 hours. For fast-test, hold the ²TP1² pin high and the minute digit will be increased every second. In the count-down mode, when the time has gone past the set time and the alarm is stopped, the set time will remain at its current state or be reset to 0:00 depending on the bonding of the ²OPT² pin to VDD. The timer alarm will sound during the count-down process as listed below: 4 sounds are generated at 10 minutes before the set time is up. In the timer mode, while the timer is counting, the actual time can be displayed by pressing ²S1². Once ²S1² is released, the count-down time will 8 sounds are generated at 5 minutes before the set time is up. 4 August 10, 2000 HT1330 At 0:00 in the timer mode, the alarm will sound when S1 and S2 are simultaneously depressed. This is for the alarm test only. Once the set time is reached, the alarm will sound 60 seconds unless it is stopped by users (by pressing S3), in which case the preset time of the timer will remain unchanged or at 0:00 depending on the status of the option pin. After the device is powered on, the alarm will sound two seconds and all segments on the LCD display panel be illuminated. Pressing any one of the inputs (S1 or S2 or S3) will stop the alarm during the period for which the alarm is sounding. Output Waveform 1 0 m in u te s b e fo r e s e t tim e is u p 6 2 .5 m s 0 s e c 1 s e c 2 s e c 5 m in u te s b e fo r e s e t tim e is u p 6 2 .5 m s 0 s e c 6 2 .5 m s 1 s e c 2 s e c T im e is u p 6 2 .5 m s 6 2 .5 m s 0 s e c 1 s e c 6 0 s e c T im e r b u s y fla g o u tp u t V D D V S S T im e r is c o u n tin g u p o r d o w n 5 August 10, 2000 HT1330 Operational FlowChart N o te : S 1 /S 2 : tw o S 1 /S 2 /S 3 : S 3 > 5 s : S 3 S 1 , S 2 , S 3 # : R e p re s e *: R e p re s e P o w e r o n k e y p re s s e d s th re e k e y p re s k e y is p r e s s e d : th e k e y is p r e n ts 2 H z fla s h n ts 1 H z fla s h y n s e m s s c h d o n tim e o re th a n 5 s e d P ie z o s o u n d s 2 s e c o n d s fo r a la r m A ll s e g m e n t o n fo r L C D te s t 1 8 :8 8 A fte r 2 s e c o n d * 0 :0 0 S 1 to a d ju s t h o u r - d ig it S 2 to a d ju s t m in u te - d ig it R e a l tim e s e ttin g Y E S S 3 > 5 s N O R e a l tim e p la y in g m o d e * 1 2 :5 9 Y E S A S 3 S 1 /S 2 N O E n te r th e c o u n te r M o d e 0 :0 0 S 1 /S 2 B C o u n t_ u p M o d e Y E S S 3 A la r m te s t Y E S N O C o u n t_ d o w n M o d e S 1 to a d ju s t h o u t- d ig it S 2 to a d ju s t m in u te - d ig it C o u n t_ d o w n tim e s e ttin g 0 :0 1 O P B o n d e d o p tio n S 3 C o u n t-u p p la y in g # 1 9 :5 9 N O S 2 S 1 , S 3 , S 1 /S 2 , S 1 /S 2 / S 3 N O S 2 to s h o w th e c o u n t n u m b e r S 1 /S 2 to B te s t S 1 /S 2 /S 3 to A 0 :0 0 C o u n t_ d o w n tim e p la y in g Y E S N O S 1 to d is p la y th e r e a l tim e 6 A la r m b ib i A n y k e y to p re s s Y E S S 3 fo r s ta rt/ s to p c o u n te r August 10, 2000 HT1330 LCD Format C 1 F 2 C O L F 3 B 2 G 2 E 2 C 2 C O L B 3 G 3 E 3 C 3 D 3 D 2 D 1 C O M 1 B 3 /C 3 F 3 /E 3 B 1 G 1 A 3 A 2 F 1 E 1 A 3 /G 3 A 1 B 2 /C 2 A 2 D 2 /G 2 F 2 /E 2 C O L /D 3 B 1 /C 1 A 1 /G 1 K /D 1 F 1 /E 1 C O M 2 K Application Circuits V D D P ie z o S 3 2 3 1 2 9 S 2 2 S 1 2 8 2 7 2 6 2 5 2 4 2 2 B u s y 3 0 .0 1 m F 4 5 H T 1 3 3 0 0 .0 1 m F 6 2 1 3 2 7 6 8 H z X 'T A L 2 0 M W 7 2 0 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 1 1 B ip le x e d L C D 7 August 10, 2000 HT1330 Holtek Semiconductor Inc. (Headquarters) No.3 Creation Rd. II, Science-based Industrial Park, Hsinchu, Taiwan, R.O.C. Tel: 886-3-563-1999 Fax: 886-3-563-1189 Holtek Semiconductor Inc. (Taipei Office) 5F, No.576, Sec.7 Chung Hsiao E. Rd., Taipei, Taiwan, R.O.C. Tel: 886-2-2782-9635 Fax: 886-2-2782-9636 Fax: 886-2-2782-7128 (International sales hotline) Holtek Semiconductor (Hong Kong) Ltd. RM.711, Tower 2, Cheung Sha Wan Plaza, 833 Cheung Sha Wan Rd., Kowloon, Hong Kong Tel: 852-2-745-8288 Fax: 852-2-742-8657 Copyright Ó 2000 by HOLTEK SEMICONDUCTOR INC. The information appearing in this Data Sheet is believed to be accurate at the time of publication. However, Holtek assumes no responsibility arising from the use of the specifications described. The applications mentioned herein are used solely for the purpose of illustration and Holtek makes no warranty or representation that such applications will be suitable without further modification, nor recommends the use of its products for application that may present a risk to human life due to malfunction or otherwise. Holtek reserves the right to alter its products without prior notification. For the most up-to-date information, please visit our web site at http://www.holtek.com.tw. 8 August 10, 2000