IZ7007
Circuit for electron pedometer - ergmeter
Short characteristics
Functions performed:
-
-
-
-
5 functions for counting time and calendar with indication of hours, minutes, seconds,
month, date ,
count the quantity of steps by means of evaluation and counting pulses from external
sensor ;
count and indication of steps, calories, kilometers , miles during current day and night
(mode «DAILY STEPS COUNTER»);
summing up at changing 24 hours, steps , calories, kilometers , miles with values
stored previous ( mode «TOTAL STEPS COUNTER»).
Features:
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-
-
-
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imbed in chip element of quartz generator with operating frequency of 32768 Hz,
capacity, resistor, and voltage doubler;
operation from one battery with the voltage of 1.5V, low consumption power;
availability of circuits of contacts bracing suppression on buttons inputs;
frequency of registered pulses from external sensor at counting steps is no more than
6Hz at duration of time between the end of previous and beginning of counted pulse no
less than 100 ms;
conversion of quantity of steps into calories , kilometres and miles according to the
following ratios:
(10 steps
= 0.24 calorie
= 0.0073 klm
= 0.0045 mile ;
1000 steps = 24 calorie
= 0.73 klm
= 0.456 mile );
indication of distance in miles and kilometers starting from 0.001, calories, starting
from 0.1.
-
Operating temperatures range
operating temperatures range from -0 to +70°С.
1
IZ7007
Тable
1 - Limiting and extreme modes
Symbol in
letters
U
CC1
U
CC2
U
IH
U
IL
Name of parameter, mode , unit
of measurement
Primary supply voltage from the
source of voltage, V
Secondary supply voltage, V
Input voltage of high level, V
Input voltage of low level, V
Extreme mode
min
max
1,2
1,8
2U
CC1
-0,3
U
CC1
-0,3
Uss
2U
CC1
U
CC1
Uss+0,3
Limiting mode
min
max
-0,3
2,0
-0,3
-0,3
-0,3
4,0
U
CC1
+0,3
U
CC1
+0,3
Таble
2 - Electric parameters
(Таmb = 25°С )
Name of the parameter
in letters
Standard
min
max
-
-
-
-
-
Voltage of quartz generator start
voltage of quartz generator break-down
U
OSC
U
OSP
-
-
0.6
1.2
3.0
mode of
unit of
measurement measurement
U
CC1
=1.8 V
U
CC1
=1.8 V
without load
U
CC1
=1.65 V
U
CC1
=1.65 V
U
IL
=0.3 V
U
CC1
=1.8 V
U
IL
=0.3 V
t
≤
5
с
-
V
V
µА
µА
µА
µА
Consumption current in primary supply
voltage chain from voltage source
Consumption current in secondary supply
voltage chain
dynamic consumption current
Input current of low level on
inputs S, M, D, COUNT
I
CC1
I
CC2
I
CCO
I
IL
5
8
1.45
1.2
ST
AM
PМ
1
CALLS
F
A
KM
MILIS
COL
B
E
G
C
D
2
TODAY
3
P3
4
P4
5
P5
6
P6
TOTAL
Figure1 - Format LCD
Таble
3 – LCD segments State
2
IZ7007
CALENDAR
4
СЕК
D
D
M
DATA OF CURRENT DAY
COUNT
QUANTITY OF STEPS
D
COUNT QUANTITY
OF CALORIES
D
D
COUNT DISTANCE
IN KILOMETERS
D
D
COUNT DISTANCE
IN MILES
S
**)
M
TOTAL DATA
M
COUNT
QUANTITY OF STEPS
D
COUNT QUANTITY
OF CALORIES
D
COUNT DISTANCE
IN KILOMETERS
D
COUNT DISTANCE
IN MILES
D
D
S
***)
PRESENT TIME
D
*)
SET OF SECONDS
S
SET OF HOURS
S
SET OF MINUTES
S
SET OF MONTH
S
SET OF DATE
S
D
*) The seconds will be reset to 00 and 1 will be added
to minutes if the current seconds is between 30 and 59
**)
Current data reset with adding it to total data
***) Reset
Figure 3 -Control algorithm
4
IZ7007
Figure 4 - Control algorithm and display of date
1
2
3
4
5
6
7
DATA OF CURRENT DAY
M
TOTAL DATA
4
СЕК
D
D
ST
M
1
ST
2
3
4
5
6
7
1
2
3
4
AM
1 2
3
4
5
6
7
M
TODAY
TOTAL
D
5
6
7
*) D
S
D
AM
1 2
3
4
5
6
7
1
CALLS
S
CALLS
5
6
7
1
2
3
4
TODAY
2
3
4
AM
1 2
3
4
5
6
7
D
D
S
**)
TOTAL
D
5
6
7
S
**)
KM
1
KM
6
7
1
2
3
4
S
AM
1 2
3
4
5
6
7
S1
D
S
D
1
2
3
4 5
S1
6
7
1
TODAY
2
3
4
5
TOTAL
D
5
6
7
D
MILIS
TODAY
2
3
4
5
6
7
1
2
3
4
5
MILIS
TOTAL
D
6
7
S
D
1
2
3
4
5
6
7
D
S
*) The seconds will be reset to 00 and 1 will be added
to minutes if the current seconds is between 30 and 59
**)
Current data reset with adding it to total data
***) Reset
.
t> 100mc
COUNT
T > 166mc
Figure 5 - Timing diagram
5
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