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H1137V03 Datasheet(PDF) 1 Page - EM Microelectronic - MARIN SA

Part # H1137V03
Description  CMOS circuit for Analog Quartz Watches
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Manufacturer  EMMICRO [EM Microelectronic - MARIN SA]
Direct Link  http://www.emmicroelectronic.com
Logo EMMICRO - EM Microelectronic - MARIN SA

H1137V03 Datasheet(HTML) 1 Page - EM Microelectronic - MARIN SA

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R
H1137
Copyright
© 2004, EM Microelectronic-Marin SA
1
www.emmicroelectronic.com
CMOS circuit for Analog Quartz Watches
Description
The H1137 is a low power 32kHz analog watch chip de-
signed to drive a stepping motor. Motor pulse width is
programmable from 0.9765 to 14.65 milliseconds in steps
of 0.9765 milliseconds. Motor pulse period is program-
mable from 2 x 1 to 2 x 60 seconds in steps of 1 second.
Motor pulse period is also programmable from 2 x 0.25 to
2 x 15.75 seconds in steps of 0.25 seconds. Input and
output capacitors are integrated on the chip. Their values
are metal mask selectable. The selection of width, period
and capacitance are metal options and do not require
additional bonds.
Application
Analog watches
Features
32Hz quartz oscillator
Operating voltage range – 1.2V to –1.8V
High oscillator stability
Integrated capacitors, mask selectable
Mask options for pad designation, motor period and
motor pulse width
Shorted motor coil between motor pulses
Fast motor test function
ESD protected terminals
512Hz output on TEST pad for quartz frequency
measurement
Fully debounced TEST input and RESET input
Functional Diagram
Operating range of Trimmer Capacitance:
3pF
≤ C
TR ≤ 30 pF
RL
(Stepping Motor)
CROWN
C
TR
V
N
V
P
V
P
V
P
RESET
MOT
1
MOT
2
OSC
IN
OSC
OUT
H1137
V
P
V
N
Fig. 1
Pin Assignment
H1137
87
6
5
12
3
4
10
Pad
Function
Pad location
VN
Negative supply voltage
1
VP
Positive supply voltage
5
OSCIN
Oscillator input
3
OSCOUT Oscillator output
4
MOT1
Motor drive output 1
7
MOT2
Motor drive output 2
6
RESET
Reset input
2 or 8
TEST
Test input/output
2 or 8 or 10
Fig. 2
EM MICROELECTRONIC - MARIN SA


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