Holtek Semiconductor Inc HT1350 Datasheet
Features
Operating voltage: 1.5V
·
Auto walking or jogging detection
·
Step number/mileage/kilometer/calorie
·
display
LCD display
·
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 cir
cuit, a step number/kilometer/mile/calorie step
Block Diagram
HT1350
Step Counter
An oscillator with 32kHz
·
Few external components
·
Low power consumption
·
An LCD with 1/3 duty, 1/2 bias
·
counter, a voltage doubler, and an LCD display
multiplexer.
The IC can automatically distinguish walking
from jogging, thus making appropriate calcula
tions.
-
VDD VSS
-
OSC1
OSC2
STEP
WALK/RUN
AUTO /M AN U
MODE
O scillator
P re scaler
Step Pulse
G enerator
Auto-Detect
Circuit
(Jog/W alk)
M ode
Switch
Level Shift
Circuit
CP1 CP2 CP3 COM1 COM2 COM3 OUT4 OUT17
Step
C ounter
Mile
C ounter
M u lt ip le x e r C irc u it
1 June 28, 1999
Km
C ounter
TEST1
TEST2
TEST3
RESET
Cales
C ounter
Pad Assignment
HT1350
AUTO /M AN U
WALK/RUN
RESET
MODE
VSS
TEST3
VDD
TEST2
TEST1
OSC2
OSC1
OUT17
OUT16
OUT15
OUT14
1
2
3
4
5
6
7
8
32
92510
OUT13
11
OUT12
OUT11
30
31
13
12
OUT9
OUT10
Chip size: 2725 ´ 2780 (mm)
(0,0)
14
OUT8
29
28
16
15
OUT7
OUT6
26
27
STEP
24
CP1
23
CP2
22
CP3
21
COM 1
20
COM 2
18
17
19
OUT5
OUT4
COM 3
2
* The IC substrate should be connected to VDD in the PCB layout artwork.
Pad No. X Y Pad No. X Y
1
2
3
4
5
6
7
8
9
10
11
12
13
-1206.00
-1206.00
-1206.00
-1206.00
-1206.00 -159.50
-1206.00 -359.50
-1206.00 -624.50
-1206.00 -824.50
-1098.00 -1190.50
-898.00 -1190.50
-633.00 -1190.50
-433.00 -1190.50
-168.00 -1190.50
14 32.00
15 297.00
16 497.00
1159.50 17 762.00
994.50 18 962.00
661.70 19 1202.00
71.50 20 1202.00
21 1202.00
22 1202.00
23 1202.00 65.50
24 1202.00 259.50
25 1202.00 537.00
26 1078.00 1167.50
27 812.00 1167.50
28 631.00 1167.50
29 447.00 1167.50
-1190.50
-1190.50
-1190.50
30
31
32
-59.00
-259.00
-966.00
-1190.50
-1190.50
-1190.50
-753.50
-335.50
-135.50
1167.50
1167.50
1167.50
Unit: mm
2 June 28, 1999
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