• CD clock input eliminates crystals and oscillators
• All clocks are frequency-locked to the CD clock
• 2.7V to 5.5V operation
• Zero ppm error 16.9344, 13.5, 27.0 MHz clocks
• Power down mode reduces IDD to 10µA (typ)
Block Diagram
VDD
GND
3
5
Output
Buffer
40 MHz
(GCK)
27 MHz
(VCK)
13.5 MHz
16.9344 MHz
(DA-XCK)
PD
2.1168 MHz
clock
X1
Clock Synthesis
and Control
Circuitry
Clock
Buffer/
Crystal
Oscillator
Output
Buffer
Output
Buffer
Output
Buffer
X2
Signal names in parentheses under the outputs indicate the corresponding input pins of the CL480 needing
this clock.
1
Revision 10055
Printed 11/4/97
MicroClock Incorporated•1171 North Fourth St.•San Jose•CA•95112•(408)295-9800tel•(408)295-9818fax
MDS0220D
PRELIMINARY INFORMATION
MK0220
Video CD Clock Source
Pin Assignment
GND
See note
X2
X1/ICLK
VDD
GND
VDD
40M
GND
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
PD
NC
13.5M
VDD
GND
GND
27M
16.93M
Note on reference input -
the MK0220 is
designed to be used with a clock input into
pin 3. This clock will come from the CD kit.
While the chip can also be used with a
2.1168 MHz crystal, this is not a commonly
stocked value. If a 2.1168 MHz clock is not
available, contact MicroClock for other
devices.
16 pin narrow SOIC
Pin Descriptions
Number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Name
GND
X2
X1/ICLK
VDD
GND
VDD
40M
GND
16.9M
27M
GND
GND
VDD
13.5M
NC
PD
Type
P
O
I
P
P
P
O
P
O
O
P
P
P
O
-
I
Description
Connect to ground.
Crystal connection. Leave unconnected for clock input, or connect to 2.1168 MHz crystal.
Crystal connection. Connect to 2.1168 MHz input clock from CD (or crystal). See note above.
Connect to +3.3V.
Connect to ground.
Connect to +3.3V.
40 MHz clock output. Use for GCK on CL480.
Connect to ground.
16.9344 MHz clock output. Use for DA-XCK on CL480, MCLK on CS4333.
27.00 MHz clock output. Leads 13.5M by 5ns. Use for VCK on CL480, NTSC/PAL encoder.
Connect to ground.
Connect to ground.
Connect to +3.3V.
13.5 MHz clock output. Lags 27M by 5ns.
No Connect.
Power down. Stops all clocks low when this pin is taken low.
Type: I = Input, O = output, P = power supply connection
2
Revision 10055
Printed 11/4/97
MicroClock Incorporated•1171 North Fourth St.•San Jose•CA•95112•(408)295-9800tel•(408)295-9818fax
MDS0220D
PRELIMINARY INFORMATION
MK0220
Video CD Clock Source
External Components
The MK0220 requires a minimum number of external components for proper operation. Decoupling
capacitors of 0.1µF should be connected between VDD and GND on pins 4/5 and pins 13/12, as close to
the MK0220 as possible. A series termination resistor of 33Ω may be used for each clock output. The device
does not require (nor do we recommend) capacitors connected to the crystal pins. If a 2.1168 MHz crystal
is used, it must be connected as close to the chip as possible. Recommended load capacitance for the crystal
is 12pF.
Electrical Specifications
Parameter
Supply Voltage, VDD
Inputs and Clock Outputs
Ambient Operating Temperature
Soldering Temperature
Storage Temperature
Conditions
Referenced to GND
-0.5
0
Max of 20 seconds
-65
2.7
2
IOH=-4mA
IOH=-25mA
IOL=25mA
No Load, VDD=3.6V
No Load, VDD=3.0V
No Load, PD=0V
Each output
VDD-0.4
2.4
16
12
10
±100
15
7
0.4
20
16
Minimum
Typical
Maximum
7
VDD+0.5
70
260
150
5.5
0.8
Units
V
V
°C
°C
°C
V
V
V
V
V
V
mA
mA
µA
mA
pF
pF
ppm
ppm
ABSOLUTE MAXIMUM RATINGS (Note 1)
DC CHARACTERISTICS
Operating Voltage, VDD
Input High Voltage, VIH
Input Low Voltage, VIL
Output High Voltage
Output High Voltage
Output Low Voltage
Operating Supply Current, IDD
Operating Supply Current, IDD
Standby Supply Current, IDD, at 3.6V
Short Circuit Current
Input Capacitance, X1 and X2 pins
Input Capacitance
Actual mean frequency error versus target
Actual mean frequency error versus target
40.0MHz output only
Note 2
±100
0
AC CHARACTERISTICS
Input Frequency
2.1168
MHz
Output Clock Rise Time
0.8 to 2.0V
1.5
ns
Output Clock Fall Time
2.0 to 0.8V
1.5
ns
Output Clock Duty Cycle, High Time
At VDD/2
45
49 to 51
55
%
Power down Time, PD taken low to clocks off
1
µs
Power up Time, PD taken high to clocks stable
2.5
5
ms
Note:
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.
2. For the 13.5MHz, 16.9MHz, and 27MHz outputs
3
Revision 10055
Printed 11/4/97
MicroClock Incorporated•1171 North Fourth St.•San Jose•CA•95112•(408)295-9800tel•(408)295-9818fax
MDS0220D
PRELIMINARY INFORMATION
MK0220
Video CD Clock Source
Package Outline and Package Dimensions
16 pin SOIC narrow
Symbol
A
b
c
D
E
H
e
h
Q
Inches
Min
Max
0.055 0.070
0.013 0.019
0.007 0.010
0.385 0.400
0.150 0.160
0.225 0.245
.050 BSC
0.016
0.004
0.01
Millimeters
Min
Max
1.397
1.778
0.330
0.483
0.190
0.254
9.779 10.160
3.810
4.064
5.715
6.223
1.27 BSC
0.406
0.102
0.254
E
H
D
Q
e
c
h x 45°
A
b
Ordering Information
Part/Order Number
MK0220-01S
MK0220-01STR
Marking
MK0220-01S
MK0220-01S
Package
16 pin narrow SOIC
Add Tape & Reel
Temperature
0-70°C
0-70°C
While the information presented herein has been checked for both accuracy and reliability, MicroClock Incorporated 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 MicroClock. MicroClock reserves the right to change any circuitry or specifications without notice. MicroClock does not
authorize or warrant any MicroClock product for use in life support devices or critical medical instruments.
CHANGE HISTORY
Version Date first published
A
6/1/95
B
6/22./95
C
9/18/95
Comments
Original
Changed operating voltage from 3.0-4.0V to 2.7V-3.6V. Corrected pin 14. Added 40MHz accuracy.
Changed operating volyage to 2.7V-5.5V. Added specific pins for decoupling caps.
4
Revision 10055
Printed 11/4/97
MicroClock Incorporated•1171 North Fourth St.•San Jose•CA•95112•(408)295-9800tel•(408)295-9818fax
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