H1137 EMMICRO [EM Microelectronic - MARIN SA], H1137 Datasheet

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H1137

Manufacturer Part Number
H1137
Description
CMOS circuit for Analog Quartz Watches
Manufacturer
EMMICRO [EM Microelectronic - MARIN SA]
Datasheet
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
Functional Diagram
Copyright © 2004, EM Microelectronic-Marin SA
V
V
N
P
Operating range of Trimmer Capacitance:
3pF ≤ C
Analog watches
C
TR
TR
≤ 30 pF
R
V
OSC
OSC
EM MICROELECTRONIC -
N
CMOS circuit for Analog Quartz Watches
IN
OUT
H1137
RESET
MOT
MOT
V
1
2
P
CROWN
RL
(Stepping Motor)
V
V
P
P
Fig. 1
1
Features
Pin Assignment
Pad
V
V
OSC
OSC
MOT
MOT
RESET
TEST
N
P
MARIN SA
IN
OUT
1
2
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
Function
Negative supply voltage
Positive supply voltage
Oscillator input
Oscillator output
Motor drive output 1
Motor drive output 2
Reset input
Test input/output
10
8
1
2
H1137
7
www.emmicroelectronic.com
6
3
Pad location
1
5
3
4
7
6
2 or 8
2 or 8 or 10
5
4
H1137
Fig. 2

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H1137 Summary of contents

Page 1

... R EM MICROELECTRONIC - 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 seconds in steps of 1 second. ...

Page 2

... MOT 300 Ω, T MOT I OPR R Between motor pulses 30pF // 1M Ω TST I Pad connected to V TST Pad connected H1137 Symbol Min. Typ. Max. Units T -10 +60 °C OPR Ω Min. Typ. Max. Units -1.8 -1.55 -1.2 ...

Page 3

... R H1137 ...

Page 4

... Input and output capacitors are integrated in the chip. Their values are metal mask selectable. Motor drive output The H1137 contains two push-pull output buffers for driv- ing bipolar stepping motors (see Fig. 3). Between two pulses, the two p-channel devices are active for motor damping ...

Page 5

... H1137V58 2x10 4.9 2x31.25 Ordering Information For other versions, please contact EM Microelectronic-Marin S.A. Please make sure to give the complete part number when ordering. H1137 WW 11 %%% - Customer Version: customer-specific number given by EM Microelectronic Thickness mils (280um mils (686um) (for other thickness, contact EM) ...

Page 6

... You are strongly urged to ensure that the information given has not been superseded by a more up-to-date version. Copyright © 2004, EM Microelectronic-Marin SA 1165 836 456 7 2 905 1177 1549 6 H1137 © EM Microelectronic-Marin SA, 11/04, Rev. A www.emmicroelectronic.com Fig. 6 ...

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