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Электронный компонент: H1344V38DLWS11

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R



H1344

Copyright 2004, EM Microelectronic-Marin SA
1
www.emmicroelectronic.com
CMOS Circuit for Analog Quartz Clocks with Bipolar
Stepping Motor Drive

Description
The H 1344 is a low power 32Khz analog clock integrated
circuit designed in HCMOS technology to drive a bipolar
stepping motor. A set of capacitors is provided on chip to be
connected, in any combination, to the two oscillator
terminals, with a maximum total capacitance of 48
p
F. Both
the motor pulse period and the motor pulse width are mask-
programmable. See page 6 for already available options.

Applications
!
Analog clocks
Features
!
32kHz quartz oscillator
!
Integrated capacitors, mask selectable
!
Single
battery
operation
!
0.7
A typical current consumption
!
Low resistance outputs for bipolar stepping motor
!
Mask options for pad designation, motor period and
pulse width, alarm frequency, modulation and duty
cycle
!
Alarm output function compatible with either NPN or
PNP-driver transistors
!
Alarm input function
!
1024Hz output on AL
IN
pad for oscillator frequency
verification
!
Fast
test
function
!
ESD
protected
terminals




Functional Diagram
1.5V +
H1344
V40
V41
V47
1
2
3
4
8
7
6
5
M
Alarm Output
C
TR
Motor
Fig.
1
Pin Assignment
H1344
V38
1
3
4
2
8
6
5
7
V
DD
MOT
2
ALARM
IN
V
SS
OSC
OUT
MOT
1
ALARM
OUT
OSC
IN
H1344
V40
V41
V47
V143
1
3
4
2
8
6
5
7
V
DD
MOT
2
ALARM
IN
V
SS
OSC
IN
MOT
1
ALARM
OUT
OSC
OUT
Fig.
2
EM MICROELECTRONIC -
MARIN SA
R



H1344

Copyright 2004, EM Microelectronic-Marin SA
2
www.emmicroelectronic.com
Absolute Maximum Ratings
Parameter Symbol
Min.
Max.
Units
Supply voltage range
Input voltage
Storage temperature
V
DD
V
SS
V
IN
T
STOR
-0.3
V
SS
-55
+5
V
DD
+125
V
V
C
Table 1

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.
Handing 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.
Recommended Operating Conditions
Parameter Symbol
Value
Units
Ambient temperature
Quartz frequency
Quartz series resistance
Motor coil resistance
Positive supply
Negative supply
T
F
Q
R
Q
R
M
V
DD
V
SS
25
32768
30
200
1.55
0
C
Hz
k
V
V
Table 2

Operating Conditions
Parameter Symbol
Min.
Typ. Max.
Units
Operating temperature
Quartz series resistance
Trimmer capacitance
T
OPR

C
TR
-20
1.5
30
+70
50
30
C
k
pF
Table 3


Electrical and Switching Characteristics
at recommended operating conditions (valid unless otherwise specified)
Parameter Symbol
Test
Min.
Typ.
Max.
Units
Supply voltage
Supply current
V
DD
I
DD
operating
without, AL
IN
open
+1.1
0.7
+1.8
2.0
V
A
Motor Output
Current into load
Pulse period
Pulse width
I
M
T
1
t
w

V
DD
= 1.2V, R
M
=200
4.0

Mask option
Mask option
mA
s
ms
Alarm Output
Frequency
Modulation
Cycle time
Pulse duration
Output current for
driving NPN-transistor
Output current for
driving PNP-transistor

f
A
f
A1
t
2
t
P
I
ALOUTN
I
ALOUTN
I
ALOUTN
I
ALOUTN





V
DD
=1.2V, V
OL
= 0.2V
V
DD
=1.2V, V
OH
= 0.7V
V
DD
=1.2V, V
OL
= 0.5V
V
DD
=1.2V, V
OH
= 1.0V




0.5
0.3
0.3
0.5
Mask option
Mask option
Mask option
Mask option
Hz
Hz
s
s
A
mA
mA
A
Alarm Input
Test In/Output

Alarm input delay
Test frequency
Input current (alarm)
Input current


t
ALD
f
T
I
IN
I
IN




Input at V
SS
, V
DD
= 1.4V
Input at V
DD

125
-1
1


1024
-5
15

570
-10
30

ms
Hz
A
A
Oscillator
Build-up time
Stability against supply
voltage variation
Output capacitance
Input capacitance

t
START
!f
! V
DD
xf
C
OUT
C
IN

V
DD
= 1.2V

1.1V
V
DD
1.8V


5
Mask option
Mask option
2
12
s
ppm/V
pF
pF
Table 4
: See "Available options" on page 6.
R



H1344

Copyright 2004, EM Microelectronic-Marin SA
3
www.emmicroelectronic.com
Timing Waveforms
Motor Output Waveform
t
w
V
DD
V
SS
V
DD
V
SS
T
1
MOT
1
MOT
2



Fig. 3


Alarm Output Waveform
1024 Hz
t
ALD
1
f
A1
T
2
t
P
2048 Hz
AL
IN
AL
OUT
Fig. 4
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H1344

Copyright 2004, EM Microelectronic-Marin SA
4
www.emmicroelectronic.com
Functional Description
Oscillator and Frequency Divider
The quartz oscillator consists of an inverter, internal
feedback resistance to bias the input and integrated
capacitors. The values of the integrated capacitors are
selectable by metal mask. The oscillator is designed for
32768Hz.

Motor Drive Output
The circuit contains two push-pull output buffers for driving
bipolar stepping motors. Between two pulses, both P-
channel transistor of the other buffer are conducting. The
outputs are protected against inductive voltage spikes with
diodes to both supply pins.
Both the motor pulse period and motor pulse width are
programmable by metal mask over a wide range of values
(see page 6 for available options).




Alarm Output
The alarm is activated by connecting ALARM
IN
to V
SS
and is
deactivated by opening the connection. A metal mask
option is available to program a continuous activation of the
alarm output.
The alarm output driver contains a push-pull output buffer
to drive an external sound source by means of an external
bipolar transistor. A metal mask option is available to allow
the use of NPN or PNP-transistors.
The tone frequency, modulation frequency, modulation
frequency and cycle time (ON/OFF time) are metal mask
selectable.

Test Mode
The ALARM
IN
pin fulfills three functions:
a) For normal operation, the ALARM
IN
pin is left open.
The circuit provides a square wave signal of 1024Hz,
which can be used to tune the oscillator.
b) If the pin is connected to V
SS
, the alarm signal is
provided at pin 6.
c) If the ALARM
IN
pin is connected to V
DD
, all output
frequencies are increased by a factor of 64, the alarm
modulation of f
A1
= 8Hz and f
A
= 2kHz are suppressed.

Test configuration
1.5V +
H1344
V40
V41
V47
1
2
3
4
8
7
6
5
Alarm Output
C
TR
R
Test
M
Operating range of trimmer
Capacitance: 1.5 pF
C
TR
30 pF
Fig. 5
R



H1344

Copyright 2004, EM Microelectronic-Marin SA
5
www.emmicroelectronic.com
Pad Location Diagram
All dimensions in
m
H1344
v40
v41
v47
1000
0
0
905
978
1499
702
304
28
795
231
0
1270
192
276
V
DD
V
SS
MOT
2
AL
IN
MOT
1
AL
OUT
OSC
OUT
OSC
IN
H1344
v05
v56
v38
1000
0
0
905
978
1
499
702
304
28
795
231
0
1270
192
276
V
DD
V
SS
MOT
2
AL
IN
MOT
1
AL
OUT
OSC
IN
OSC
OUT
Chip size:
1270 x 1499 microns
50 x 59 mils
Fig. 6