View HT1350_291488.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

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
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 HT1350 consists of internal oscillator circuit, a step number/kilometer/mile/calorie step counter, a voltage doubler, and an LCD display multiplexer. The IC can automatically distinguish walking from jogging, thus making appropriate calculations.
Block Diagram
VDD OSC1 OSC2 VSS
O s c illa to r
TEST1 TEST2 TEST3 RESET
P r e s c a le r
STEP
S te p P u ls e G e n e ra to r
S te p C o u n te r
M ile C o u n te r
Km C o u n te r
C a le s C o u n te r
W A L K /R U N A U T O /M A N U
A u to -D e te c t C ir c u it ( J o g /W a lk )
M u ltip le x e r C ir c u it
MODE
M ode S w itc h
L e v e l S h ift C ir c u it
CP1
CP2
CP3
COM1
COM2
COM3
OUT4
O UT17
1
June 28, 1999
HT1350
Pad Assignment
A U T O /M A N U W A L K /R U N RESET TEST3 MODE
VDD
VSS
TEST2 1 2 3 TEST1 OSC2
32
31
30
29
28
27
26
25 24 OSC1 O U T17 O U T16 6 7 8 9 O U T13 10 O U T12 11 O U T11 20 O U T15 O U T14 5 4 (0 ,0 ) 23 22 21
STEP CP1 CP2 CP3 COM1
COM2
12 O U T10
13 OUT9
14 OUT8
15 OUT7
16 OUT6
17 OUT5
18 OUT4
19 COM3
Chip size: 2725 2780 (mm)
2
* The IC substrate should be connected to VDD in the PCB layout artwork. Unit: mm Pad No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 X -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 Y 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
2
Pad No. 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
X 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
Y -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
June 28, 1999
HT1350
Pad Description
Pad No 1 2 3 4 5~18 19~21 22 23~24 25 26 27 28 29 30 31 32 Pad Name TEST2 TEST1 OSC2 OSC1 OUT17~OUT4 COM3~COM1 CP3 CP2~CP1 STEP WALK/RUN AUTO/MANU VDD TEST3 VSS MODE RESET I/O I/O I/O O I O O O O I I I I I/O I O O Internal Connection 3/4 3/4 3/4 3/4 CMOS NMOS * * CMOS Pull-high CMOS Pull-high CMOS Pull-high 3/4 3/4 3/4 CMOS Pull-high CMOS Pull-high For IC test only For IC test only Oscillator output Oscillator input Display data output pads for segments Display data output pads for commons Bias supply voltage pad for driving the LCD panel LCD bias supply voltage control pads Step sensor input pad Walk/Run mode manual set pad Auto detection/Manual set selection pad Positive power supply For IC test only Negative power supply (GND) LCD display mode selection System reset pad Descriptions
Approximate internal connection circuits
C M O S IN P u ll- h ig h
VDD CO M 1~ COM3 VSS
CMOS OUT
NMOS OUT (F o r C O M 1 ~ C O M 3 )
C P1~C P3
CP1 CP3 CP2 OSC1 VDD
O S C IL L A T O R
VDD
OSC2
3
June 28, 1999
HT1350
Absolute Maximum Ratings
Supply Voltage.................................-0.3V to 5V Input Voltage .................VSS-0.3V to VDD+0.3V Storage Temperature.................-50C to 125C Operating Temperature ..................0C to 70C
Note: These are stress ratings only. Stresses exceeding the range specified under Absolute Maximum Ratings 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 VDD IDD ISTB VIL VIH fOSC Parameter Operating Voltage Operating Current Standby Current Input Low Voltage Input High Voltage System Frequency Test Conditions VDD 3/4 1.5V 1.5V 1.5V 1.5V 1.5V Conditions 3/4 No load, fOSC=32kHz 3/4 3/4 3/4 3/4 Min. 1.3 3/4 3/4 3/4 0.8VDD 3/4 Typ. 1.5 1.5 0.5 3/4 3/4 32 Max. 1.7 3 1
Ta=25C Unit V mA mA V V kHz
0.2VDD 3/4 3/4
Functional Description
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. 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(R)mile(R)kilometer(R)calorie in sequence.
4
June 28, 1999
HT1350
LCD Display
D ig it 5
a
D ig it 4
D ig it 3
D ig it 2
D ig it 1
f g
b
e d
c
P2
P1
1 1
C om 1
2 2
C om 2
3 3 4
4 5
5
6 6
7 7 D 4d D 4g D 4b 8
8 9
9
10 10
11 11 D 2e
12 12 D 2d D 2g D 2b
13 13 D 1e D1f D 1a
14 14 D 1d D 1g D 1b
15 15 P1 D2c D1c
16 16 P2 D4c C a ls
17 17
D 5e D5f C om 3 D 5a
D 5d D 5g D 5b
D 4e D4f D 4a
D 3e D3f D 3a
D 3d D 3g D 3b D 3c
M ile s
D5c Km
D2f D 2a
Application Circuit
X 14 COM1 CP3 102 VDD 1 .5 V VSS OSC1 OSC2 RESET MODE COM2 COM3 OUT4 O U T17 CP1 102 CP2 STEP
06!#
32kH 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

▲Up To Search▲

Price & Availability of HT1350

	To Download HT1350 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .