MK3200
32.768 kHz Clock Oscillator
MDS 3200 C
1
Revision 101001
Integrated Circuit Systems, Inc. · 525 Race Street · San Jose ·CA · 95126· (408)295-9800tel · www.icst.com
Block Diagram
Description
Features
The MK3200 is ICS' lowest cost, low power clock
oscillator that generates a low power 32.768 kHz
output from an inexpensive 32.768 kHz watch crystal.
This part includes a power down pin and allows you to
tri state the output clock for in-circuit testing.
ICS manufactures the largest variety of clock
synthesizers for all applications. If more clock outputs
are needed, including MHz frequencies, see the
MK32xx family of parts. Consult ICS to eliminate
VCXOs, crystals and oscillators from your board.
· Packaged in 8 pin SOIC
· Operates from 2.5 V to 5 V
· Consumes only 3.5 µA in normal operation
· Accepts an inexpensive 32.768 kHz crystal input
· Offers power down mode
· Includes an Output Enable pin to tri state
the output for in-circuit testing
· Advanced, low power, sub-micron CMOS process
· For other 32.768 kHz-based clocks with MHz
outputs, please consult ICS
· Industrial temperature version available
Crystal
Oscillator
32.768 kHz
crystal
X1
X2
Power Down
Output
Buffer
32.768 kHz Clock
Output Enable
VDD
GND
MK3200
32.768 kHz Clock Oscillator
MDS 3200 C
2
Revision 101001
Integrated Circuit Systems, Inc. · 525 Race Street · San Jose ·CA · 95126· (408)295-9800tel · www.icst.com
Pin Descriptions
Pin Assignment
Number
Name
Description
1
X1
Crystal connection. Connect to a 32.768 kHz crystal.
2
VDD
VDD. Connect to + 3.3 V.
3
GND
Connect to ground.
4
32.768K
32.768 kHz clock output.
5
OE
Output Enable.
6
PD
Power Down. Turns off entire chip when high.
7
GND
Connect to ground.
8
X2
Crystal connection. Connect to a 32.768 kHz crystal.
8 pin (150 mil) SOIC
MK3200
1
8
2
3
4
7
6
5
X2
X1
GND
VDD
OE
32.768K
GND
PD
P D
3 2 . 7 6 8 K
Oscillator
0
On
On
1
Low
Off
Power Down Select Table
O E
3 2 . 7 6 8 K
Oscillator
0
Tri state (Hi-Z)
On
1
On
On
Output Enable Select Table
0 = connect directly to GND
1 = connect directly to VDD
MK3200
32.768 kHz Clock Oscillator
MDS 3200 C
3
Revision 101001
Integrated Circuit Systems, Inc. · 525 Race Street · San Jose ·CA · 95126· (408)295-9800tel · www.icst.com
Parameter
Conditions
Minimum
Typical
Maximum
Units
ABSOLUTE MAXIMUM RATINGS (note
te 1)
Supply voltage, VDD
Referenced to GND
7
V
Inputs and Clock Outputs
Referenced to GND
-0.5
VDD+0.5
V
Ambient Operating Temperature
-40
85
°C
Storage temperature
-65
150
°C
DC CHARACTERISTICS (VDD = 3.3 V
V unless noted)
Operating Voltage, VDD
2.375
5.250
V
Output High Voltage, VOH
IOH=-3mA
2.4
V
Output Low Voltage, VOL
IOL=3mA
0.4
V
Output High Voltage, VOH, CMOS level
IOH=-1.5mA
VDD-0.4
V
Operating Supply Current, IDD, PD=0, OE=1 No Load
3.5
µA
Short Circuit Current
±6
mA
AC CHARACTERISTICS (VDD = 3.3 V
V unless noted)
Input Crystal Frequency
32.768
kHz
Input Crystal Accuracy
±30
ppm
Output Clock Rise Time
0.8 to 2.0V
8
ns
Output Clock Fall Time
2.0 to 0.8V
8
ns
Output Clock Duty Cycle
At VDD/2
40
50
60
%
Electrical Specifications
Notes: 1. Stresses beyond those listed under Absolute Maximum Ratings could cause permanent damage to the
device. Prolonged exposure to levels above the operating limits but below the Absolute Maximums may affect
device reliability.
External Components
The MK3200 requires a minimum number of external components for proper operation. A decoupling capacitor of
0.01µF should be connected between VDD and GND on pins 2 and 3, as close to the MK3200 as possible. A series
termination resistor of 33
may be used for the clock output if the trace is longer than a few inches. The input crystal
must be connected as close to the chip as possible. The input crystal should be a parallel mode watch crystal with 12
pF load capacitance.
MK3200
32.768 kHz Clock Oscillator
MDS 3200 C
4
Revision 101001
Integrated Circuit Systems, Inc. · 525 Race Street · San Jose ·CA · 95126· (408)295-9800tel · www.icst.com
While the information presented herein has been checked for both accuracy and reliability, Integrated Circuit Systems
Incorporated (ICS) assumes no responsibility for either its use or for the infringement of any patents or other rights of third
parties, which would result from its use. No other circuits, patents, or licenses are implied. This product is intended for use in
normal commercial applications. Any other applications such as those requiring extended temperature range, high reliability, or
other extraordinary environmental requirements are not recommended without additional processing by ICS. ICS reserves the
right to change any circuitry or specifications without notice. ICS does not authorize or warrant any ICS product for use in life
support devices or critical medical instruments.
Ordering Information
Part/Order Number
Marking
Shipping packaging
Package
Temperature
MK3200S
MK3200S
tubes
8 pin SOIC
0-70 °C
MK3200STR
MK3200S
tape and reel
8 pin SOIC
0-70 °C
MK3200SI
MK3200SI
tubes
8 pin SOIC
-40-85 °C
MK32000SITR
MK3200SI
tape and reel
8 pin SOIC
-40-85 °C
Package Outline and Package Dimensions
(For current dimensional specifications, see JEDEC Publication No. 95.)
8 pin SOIC
Inch
ches
Millime
meters
Symbol
Min
Max
Min
Max
A
0.0532
0.0688
1.35
1.75
A1
0.0040
0.0098
0.10
0.24
B
0.0130
0.0200
0.33
0.51
C
0.0075
0.0098
0.19
0.24
D
0.1890
0.1968
4.80
5.00
E
0.1497
0.1574
3.80
4.00
e .050 BS
BSC
1.27 B
BSC
H
0.2284
0.2440
5.80
6.20
h
0.0099
0.0195
0.25
0.50
L
0.0160
0.0500
0.41
1.27
B
D
E
H
e
A1
C
A
h x 45°
L
INDEX
AREA
1
2
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