R
EM MICROELECTRONIC -
MARIN SA
H1137
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.
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
Application
Analog watches
Functional Diagram
CROWN
V
N
V
N
RESET
V
P
Pin Assignment
8
10
7
6
5
H1137
2
3
4
V
P
MOT
1
C
TR
H1137
OSC
IN
MOT
2
RL
(Stepping Motor)
1
OSC
OUT
V
P
V
P
Operating range of Trimmer Capacitance:
3pF
≤
C
TR
≤
30 pF
Pad
V
N
V
P
OSC
IN
OSC
OUT
MOT
1
MOT
2
RESET
TEST
Fig. 1
Function
Negative supply voltage
Positive supply voltage
Oscillator input
Oscillator output
Motor drive output 1
Motor drive output 2
Reset input
Test input/output
Pad location
1
5
3
4
7
6
2 or 8
2 or 8 or 10
Fig. 2
Copyright
©
2004, EM Microelectronic-Marin SA
1
www.emmicroelectronic.com
R
H1137
Absolute Maximum Ratings
Parameter
Symbol
Supply voltage
V
N
Voltage applied
to other terminals
Storage tem-
T
STOR
perature
Min.
-3.6
V
N
–0.3
-55
Typ.
Max.
+0.2
V
P
+0.3
+125
Units
V
V
°C
Handling Procedures
This device contains circuitry to protect the terminals
against damage due to high static voltages or electrical
fields. However, it is advised that normal precautions be
taken to avoid application of any voltage higher than
maximum rated voltages to this circuit.
Stresses beyond these listed maximum ratings may
cause permanent damage to the device. Exposure to
conditions beyond specified operating conditions may
affect device reliability or cause malfunction.
Recommended Operating Conditions
Parameter
Ambient temperature
Quartz frequency
Quartz series resistance
Motor coil resistance
Positive supply
Negative supply
Supply source resistance
Symbol
T
f
Q
R
Q
R
M
VP
V
N
R
I
Value
25
32768
30
2.0
0
-1.55
10
Units
°C
Hz
kΩ
kΩ
V
V
Ω
Operating Conditions
Parameter
Operating temperature
Quartz series resistance
Trimmer capacitance
Symbol
T
OPR
C
TR
Min.
-10
3
Typ.
30
Max.
+60
50
30
Units
°C
k
Ω
pF
Electrical and Switching Characteristics
at recommended operating conditions unless otherwise specified
Parameter
Supply voltage range
Mean dynamic current
Mean current consumption
Oscillator
Transconductance
Starting voltage
Starting time
Stability df / f*dV
N
Motors Drivers
Voltage across motor
Voltage across motor
Voltage across motor
Short circuit impedance
Test Input / Output
Amplitude
Mean current
Reset Input
Debounce delay
Input current after debounce delay
*
Symbol
V
N
I
DYN
I
N
gm
V
ST
T
ST
V
MOT
V
MOT
V
MOT
R
CC
V
TST
I
TST
T
S
I
S
Test Conditions
Without motor and quartz,
32kHz inverted square wave forced
at OSC
IN
and OSC
OUT
, TEST open
With quartz, without motor,
TEST open, C
TR
= 12 pF
V
N
= 1.2V, V
PP
= 300mV
Within 10 seconds
Recommended operating conditions
Between –1.4V and –1.6V
V
N
= -1.55V, R
M
= 2k
Ω
V
N
= -1.25V, R
M
= 2k
Ω
R
I
= 300
Ω,
T
OPR
Between motor pulses
ZI = 30pF // 1M
Ω
Pad connected to V
P
Pad connected to V
P
2.5
0.75
2
1.5
1.35
1.0
1.0
1.35
70
7.81
7
250
23.43
50
1.40
1.10
1.20
150
Min.
-1.8
Typ.
-1.55
90
200
Max.
-1.2
150
350
Units
V
nA
nA
µmho
V
s
ppm/V
V
V
V
Ω
V
PP
nA
ms
nA
300
* Is the average input current, modulated by a frequency of 64 Hz
Copyright
©
2004, EM Microelectronic-Marin SA
2
www.emmicroelectronic.com
R
H1137
Timing Waveforms
Motor drive output in normal operation
RESET
MOT
1
MOT
2
V
N
V
P
V
N
tm
TM
TM/2
V
P
V
N
V
P
V
N
TEST
T
TST
= 1.953 ms
(512Hz output)
Motor drive output and reset
<7.81ms
RESET
debounce delay
>23.43ms
V
N
V
P
V
N
TM/2
MOT
1
MOT
2
V
P
V
N
V
P
V
N
TEST
T
TST
= 1.953 ms
(512Hz output)
Fast motor test mode, TEST = V
P
2.93 ms
≤
T
≤
65.43 ms (16 Hz)
2.93 ms
≤
T
≤
34.18 ms (32 Hz)
TEST
MOT
1
MOT
2
TM/2
62.50ms
or
31.25ms
tm
V
P
V
N
V
P
V
N
V
P
V
N
Fig. 3
Copyright
©
2004, EM Microelectronic-Marin SA
3
www.emmicroelectronic.com
R
H1137
Block Diagram
P u ls e W id th
D iv id e r
O s c illa to r
In itia l D iv id e r
D iv id e r 1 H z
O S C
IN
O S C
OUT
M o to r L o g ic
P u ls e R e p e titio n
D iv id e r
T e s t L o g ic
M o to r D r iv e r
M a s te r R e s e t
TEST
MOT
1
MOT
2
RESET
Fig. 4
Pin Assignments
Name
V
N
V
P
OSC
IN
OSC
OUT
MOT
1
MOT
2
RESET
TEST
Function
Negative supply voltage
Positive supply voltage
Oscillator input
Oscillator output
Motor drive output 1
Motor drive output 2
Reset input
Test input / output
Test mode
The TEST pad fulfils two functions:
a) For normal operation, the TEST pad is left open. The
circuit outputs a square wave signal of 512Hz which
can be used for tuning the oscillator.
b) If the TEST pad is connected to V
P
, the period for
the motor pulses changes to either 2 x 31.25 ms or
2 x 62.5 ms (mask options), while the motor pulse
width remains unchanged (fast motor test).
Test
Functional Description
Oscillator
The 32’768Hz clock frequency is generated by a crystal
oscillator. 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.
Reset
Pulling the RESET input to V
P
resets the frequency di-
viders and disables the motor pulses. Motor pulses in
progress when the RESET function is applied, will be
completed. After releasing the RESET pad from V
P
, the
next motor pulse appears with a delay of one half motor
cycle on the drive output MOT
1
if the last motor pulse
appeared on MOT
2
or vice-versa (see Fig. 3). Due to the
debounce circuitry on the RESET input, V
P
must be ap-
plied for at least 23.4 ms to be accepted as RESET.
Test Pad
Connected to
V
P
Open
Function
Fast motor
test
Normal
operation
Description
Increase the frequency for the
motor pulses to 16Hz (32Hz)
Output of square wave signal
(512Hz)
Test configuration
V
P
RL
Reset
RESET
MOT
1
MOT
2
V
P
OSC
OUT
V
P
H1137
Test
TEST
V
N
C
TR
V
N
V
P
Operating range of Trimmer Capacitance:
3pF
≤
C
TR
≤
30 pF
OSC
IN
Fig. 5
Copyright
©
2004, EM Microelectronic-Marin SA
4
www.emmicroelectronic.com
R
H1137
Metal Mask Option Possibilities
Motor pulse and capacitance
Sym-
bol
TM
TM
tm
C
IN
C
OUT
Range
Range
Range
min.
max.
resolut.
Description
Motor pulse period
1.00s
2x1.00s
2x60.00s
Fast motor TEST
2x31.25ms 2x62.50ms
Motor pulse width
0.9765ms 14.65ms 0.9765ms
Oscillator input capacity
1pF
2pF
C
IN
+ C
OUT
=35pF
Oscillator output capac.
1pF
2.7pF
Pad options
Sym-
Description
bol
TEST
Pad TEST
RESET Pad RESET
Pad
Layout 1
Pad 10
Pad 8
Pad 2
not used
Pad
Layout 2
Pad 2
Pad 8
Pad 10
not used
Pad
Layout 3
Pad 8
Pad 2
Pad 10
not used
Possible versions
Motor Output
Period
s
H1137V01
H1137V02
H1137V03
H1137V04
H1137V05
H1137V07
H1137V08
H1137V09
H1137V10
H1137V11
H1137V12
H1137V13
H1137V14
H1137V15
H1137V16
H1137V17
H1137V19
H1137V20
H1137V21
H1137V22
H1137V23
H1137V24
H1137V25
H1137V26
H1137V27
H1137V28
H1137V51
H1137V52
H1137V53
H1137V54
H1137V58
2x12
2x1
2x10
2x12
2x1
2x10
2x12
2x1
2x1
2x12
2x1
2x12
2x1
2x1
2x1
2x5
2x20
2x20
2x1
2x1
2x1
2x10
2x5
2x20
2x0.5
2x40
2x5
2x5
2x1
2x20
2x10
Pulse
Width
ms
6.8
3.9
7.8
5.9
6.8
5.9
6.8
7.8
3.9
5.9
6.8
6.8
4.9
6.8
5.9
5.9
7.8
5.9
4.9
3.9
5.9
6.8
7.8
6.8
4.9
5.9
4.9
7.8
3.9
4.9
4.9
Option list (supply voltage –1.55V)
Options
Integrated
capacitor
Fast
Mode
ms
2x62.5
2x62.5
2x62.5
2x62.5
2x62.5
2x62.5
2x62.5
2x62.5
2x62.5
2x62.5
2x62.5
2x62.5
2x62.5
2x62.5
2x62.5
2x62.5
2x62.5
2x62.5
2x62.5
2x62.5
2x62.5
2x62.5
2x62.5
2x31.25
2x62.5
2x62.5
2x31.25
2x31.25
2x31.25
2x31.25
2x31.25
OSC
IN
pF
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
OSC
OUT
pF
18
14
22
14
14
16
14
20
14
14
14
14
16
20
14
14
14
14
14
20
20
14
20
14
14
14
23
23
23
23
25
Pad 1
V
N
V
n
V
N
V
N
V
N
V
N
V
N
V
N
V
N
V
N
V
N
V
N
V
N
V
N
V
N
V
N
V
N
V
N
V
N
V
N
V
N
V
N
V
N
V
N
V
N
V
N
V
N
V
N
V
N
V
N
V
N
Pad 2
-
TEST
RESET
TEST
TEST
RESET
TEST
TEST
-
-
-
-
TEST
TEST
TEST
TEST
TEST
TEST
TEST
TEST
TEST
TEST
TEST
TEST
TEST
TEST
TEST
TEST
TEST
TEST
RESET
Pad 3
OSC
IN
OSC
IN
OSC
IN
OSC
IN
OSC
IN
OSC
IN
OSC
IN
OSC
IN
OSC
IN
OSC
IN
OSC
IN
OSC
IN
OSC
IN
OSC
IN
OSC
IN
OSC
IN
OSC
IN
OSC
IN
OSC
IN
OSC
IN
OSC
IN
OSC
IN
OSC
IN
OSC
IN
OSC
IN
OSC
IN
OSC
IN
OSC
IN
OSC
IN
OSC
IN
OSC
IN
Designation pad
Pad 4
OSC
OUT
OSC
OUT
OSC
OUT
OSC
OUT
OSC
OUT
OSC
OUT
OSC
OUT
OSC
OUT
OSC
OUT
OSC
OUT
OSC
OUT
OSC
OUT
OSC
OUT
OSC
OUT
OSC
OUT
OSC
OUT
OSC
OUT
OSC
OUT
OSC
OUT
OSC
OUT
OSC
OUT
OSC
OUT
OSC
OUT
OSC
OUT
OSC
OUT
OSC
OUT
OSC
OUT
OSC
OUT
OSC
OUT
OSC
OUT
OSC
OUT
Pad 5
V
P
V
P
V
P
V
P
V
P
V
P
V
P
V
P
V
P
V
P
V
P
V
P
V
P
V
P
V
P
V
P
V
P
V
P
V
P
V
P
V
P
V
P
V
P
V
P
V
P
V
P
V
P
V
P
V
P
V
P
V
P
Pad 6
MOT
2
MOT
2
MOT
2
MOT
2
MOT
2
MOT
2
MOT
2
MOT
2
MOT
2
MOT
2
MOT
2
MOT
2
MOT
2
MOT
2
MOT
2
MOT
2
MOT
2
MOT
2
MOT
2
MOT
2
MOT
2
MOT
2
MOT
2
MOT
2
MOT
2
MOT
2
MOT
2
MOT
2
MOT
2
MOT
2
MOT
2
Pad 7
MOT
1
MOT
1
MOT
1
MOT
1
MOT
1
MOT
1
MOT
1
MOT
1
MOT
1
MOT
1
MOT
1
MOT
1
MOT
1
MOT
1
MOT
1
MOT
1
MOT
1
MOT
1
MOT
1
MOT
1
MOT
1
MOT
1
MOT
1
MOT
1
MOT
1
MOT
1
MOT
1
MOT
1
MOT
1
MOT
1
MOT
1
Pad 8
RESET
RESET
TEST
RESET
RESET
TEST
RESET
RESET
RESET
RESET
RESET
RESET
RESET
RESET
RESET
RESET
RESET
RESET
RESET
RESET
RESET
RESET
RESET
RESET
RESET
RESET
RESET
RESET
RESET
RESET
TEST
Pad 10
TEST
-
-
-
-
-
-
-
TEST
TEST
TEST
TEST
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Com-
patible
EURO-
SIL
E1208
A
B
C
D
E
G
H
IS
K
L
M
N
O
P
S
T
V
WA
WB
WD
WE
WF
WG
WH
Version
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:
11 = 11 mils (280um)
27 = 27 mils (686um)
(for other thickness, contact EM)
Die form:
WW = Wafer
WS = Sawn Wafer/Frame
WP = Waffle Pack
Copyright
©
2004, EM Microelectronic-Marin SA
5
www.emmicroelectronic.com
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