HT1350 Step Counter Features · · · · Operating voltage: 1.5V Auto walking or jogging detection Step number/mileage/kilometer/calorie display LCD display · · · · An oscillator with 32kHz Few external components Low power consumption An LCD with 1/3 duty, 1/2 bias General Description counter, a voltage doubler, and an LCD display multiplexer. The HT1350 is a step counter IC implemented in the CMOS technology. It provides an LCD with a whole course (kilometer/mile) as well as the consumed calorie display. The IC can automatically distinguish walking from jogging, thus making appropriate calculations. The HT1350 consists of internal oscillator circuit, a step number/kilometer/mile/calorie step Block Diagram V D D O S C 1 O S C 2 V S S T E S T 1 T E S T 2 O s c illa to r T E S T 3 R E S E T P r e s c a le r S T E P W A L K /R U N A U T O /M A N U M O D E S te p P u ls e G e n e ra to r S te p C o u n te r A u to -D e te c t C ir c u it ( J o g /W a lk ) M o d e S w itc h K m C o u n te r M ile C o u n te r C a le s C o u n te r M u ltip le x e r C ir c u it L e v e l S h ift C ir c u it C P 1 C P 2 C P 3 C O M 1 C O M 2 1 C O M 3 O U T 4 O U T 1 7 June 28, 1999 HT1350 Pad Assignment V D D A U T O /M A N U W A L K /R U N 3 T E S T 3 O S C 2 V S S 2 M O D E T E S T 1 1 R E S E T T E S T 2 3 2 3 1 3 0 2 9 2 8 2 7 2 6 2 5 O S C 1 4 O U T 1 7 5 O U T 1 6 (0 ,0 ) O U T 1 5 7 O U T 1 4 8 6 1 4 1 5 1 6 1 7 C P 1 C P 2 2 2 C P 3 2 1 C O M 1 2 0 C O M 2 O U T 8 O U T 7 O U T 6 O U T 5 1 8 1 9 C O M 3 1 3 2 4 2 3 O U T 4 1 2 O U T 9 O U T 1 2 O U T 1 3 1 1 O U T 1 0 1 0 O U T 1 1 9 S T E P 2 Chip size: 2725 ´ 2780 (mm) * The IC substrate should be connected to VDD in the PCB layout artwork. Unit: mm Pad No. X Y Pad No. X Y 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 -1206.00 -1206.00 -1206.00 -1206.00 -1206.00 -1206.00 -1206.00 -1206.00 -1098.00 -898.00 -633.00 -433.00 -168.00 32.00 297.00 497.00 1159.50 994.50 661.70 71.50 -159.50 -359.50 -624.50 -824.50 -1190.50 -1190.50 -1190.50 -1190.50 -1190.50 -1190.50 -1190.50 -1190.50 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 762.00 962.00 1202.00 1202.00 1202.00 1202.00 1202.00 1202.00 1202.00 1078.00 812.00 631.00 447.00 -59.00 -259.00 -966.00 -1190.50 -1190.50 -1190.50 -753.50 -335.50 -135.50 65.50 259.50 537.00 1167.50 1167.50 1167.50 1167.50 1167.50 1167.50 1167.50 2 June 28, 1999 HT1350 Pad Description Pad No Pad Name I/O Internal Connection Descriptions 1 TEST2 I/O ¾ For IC test only 2 TEST1 I/O ¾ For IC test only 3 OSC2 O ¾ Oscillator output 4 OSC1 I ¾ Oscillator input 5~18 OUT17~OUT4 O CMOS Display data output pads for segments 19~21 COM3~COM1 O NMOS Display data output pads for commons 22 CP3 O * Bias supply voltage pad for driving the LCD panel 23~24 CP2~CP1 O * LCD bias supply voltage control pads 25 STEP I CMOS Pull-high Step sensor input pad 26 WALK/RUN I CMOS Pull-high Walk/Run mode manual set pad 27 AUTO/MANU I CMOS Pull-high Auto detection/Manual set selection pad 28 VDD I ¾ Positive power supply 29 TEST3 I/O ¾ For IC test only 30 VSS I ¾ Negative power supply (GND) 31 MODE O CMOS Pull-high LCD display mode selection 32 RESET O CMOS Pull-high System reset pad Approximate internal connection circuits C M O S IN P u ll- h ig h C M O S O U T N M O S O U T (F o r C O M 1 ~ C O M 3 ) C P 1 ~ C P 3 O S C IL L A T O R C P 1 V D D V D D O S C 1 O S C 2 C P 3 V D D C O M 1 ~ C O M 3 V S S 3 C P 2 June 28, 1999 HT1350 Absolute Maximum Ratings 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. Electrical Characteristics Symbol Parameter Ta=25°C Test Conditions VDD Conditions ¾ Min. Typ. Max. Unit 1.3 1.5 1.7 V ¾ 1.5 3 mA VDD Operating Voltage ¾ IDD Operating Current 1.5V ISTB Standby Current 1.5V ¾ ¾ 0.5 1 mA VIL Input Low Voltage 1.5V ¾ ¾ ¾ 0.2VDD V VIH Input High Voltage 1.5V ¾ 0.8VDD ¾ ¾ V fOSC System Frequency 1.5V ¾ ¾ 32 ¾ kHz No load, fOSC=32kHz Functional Description The IC can automatically distinguish between walking and jogging and make the according calculations. The output of the LCD is busy when the RESET key is pressed. Once the LCD is in the busy state, the step counter will start counting at 0 after 0.5 seconds till the runner stops running and stands still. After the step counter stops counting, pressing the MODE key will display the step number®mile®kilometer®calorie in sequence. The HT1350 is a step counter IC. It is used to automatically count the step number taken by a runner and to display the whole course (kilometer/mile) combined with the calories consumed on the LCD. The IC is turned on and off with respect to the on/off status of a short of spring switch which corresponds to the up/down motion of the steps. The output of step number can be changed to kilometers/miles or calories by counting the total number of times the step switch is closed. 4 June 28, 1999 HT1350 LCD Display D ig it 5 D ig it 4 a D ig it 3 D ig it 2 D ig it 1 b f g c e d P 1 P 2 1 1 2 2 3 4 5 6 7 8 9 4 5 6 7 8 9 D 5 e D 5 d D 4 e D 4 d D 3 e D 3 d D 5 f D 5 g D 4 f D 4 g D 3 f D 3 g D 5 a D 5 b D 4 a D 4 b D 3 a D 3 b 3 C o m 1 C o m 2 C o m 3 1 0 1 0 D 3 c 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 1 1 2 1 3 1 4 1 5 1 6 1 7 D 2 e D 2 d D 1 e D 1 d P 1 P 2 M ile s D 2 f D 2 g D 1 f D 1 g D 2 c D 4 c D 5 c D 2 a D 2 b D 1 a D 1 b D 1 c C a ls K m Application Circuit X 1 4 C O M 1 C O M 2 C O M 3 O U T 4 O U T 1 7 C P 3 C P 1 1 0 2 1 0 2 0 6 ! # V D D C P 2 1 .5 V V S S S T E P O S C 1 O S C 2 R E S E T M O D E 3 2 k H z 5 June 28, 1999 HT1350 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 Microelectronics Enterprises 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 1999 by HOL TEK 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. 6 June 28, 1999