MK1631 provides clocks video systems. designed work with many popular
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MK1631 ICROCLOCK with NTSC/PAL Clock Source
MK1631 provides clocks video systems. designed work with many popular MPEG decoder solutions microcontrollers. chip uses MicroClock's proprietary analog Phase-Locked Loop technology, generates outputs from 16.9344MHz input crystal. This chip eliminates multiple crystals oscillators video systems, saving component cost, component count, board stuffing cost, increasing reliability removing mechanical quartz devices from system. MicroClock customize this device different frequencies small NRE.
Packaged narrow (150 mil) SOIC Compatible with many popular MPEG decoders Highly accurate frequency generation within Generates NTSC/PAL subcarrier frequencies, those frequencies Selectable processor/microcontroller frequencies Fixed clock 27MHz clocks frequency-locked each other 4.5V 5.5V operation
Block Diagram
PS1,0
Output Buffer Output Buffer Output Buffer Output Buffer
Processor Clock Processor Clock Clock Clock Clock 16.9344
Clock Synthesis Control Circuitry
16.9344 clock crystal
Output Buffer Clock Buffer/ Crystal Oscillator Output Buffer Output Buffer
Revision 12047 Printed 12/4/97 MicroClock Division Parkmoor
MDS1631B
MK1631 ICROCLOCK with NTSC/PAL Clock Source
Assignment
X1/ICLK CLK2 CLK2/2 PCLKA 16.9M PCLKB CLK2/8 Processor Clock Decoding Table (MHz) Processor Clock
PCLKA 33.8688 40.5 PCLKB 16.9344
Clock MK1631-01
CLK2 28.63636 CLK2/2 CLK2/8
35.46895
14.31818 17.73447
3.57954 4.43362
Clock frequencies MHz.
(150 mil) SOIC
Descriptions
Number Name X1/ICLK CLK2 CLK2/2 CLK2/8 PCLKB 16.9M PCLKA Type Description Processor Clock Select Determines PCLK outputs table above. Crystal connection. Leave unconnected clock input, connect 16.9344 crystal. Crystal connection. Connect 16.9344 crystal, clock input Connect +5V. Connect ground. 27.00 clock output. Clock NTSC/PAL encoders. Determined table above. Clock output divided Determined table above. Clock output divided subcarrier frequencies. Determined table above. Processor Clock outputs. Determined PS0, table above. Connect ground. Clock Select. Determines CLK2 output table above. Connect +5V. 16.9344 buffered crystal oscillator output. Processor Clock outputs. Determined PS0, table above. Processor Clock Select Determines PCLK outputs table above.
Type: Input, output, power supply connection Revision 12047 Printed 12/4/97 MicroClock Division Parkmoor
MDS1631B
MK1631 ICROCLOCK with NTSC/PAL Clock Source
External Components/Crystal Selection
MK1631 requires minimum number external components proper operation. crystal input, parallel resonant 16.9344 MHz, 16pF load, crystal recommended. frequency tolerance crystal should 50ppm better. clock input, connect leave unconnected. Decoupling capacitors 0.1µF must connected between pins (pins very close chip, terminating resistors should used clock outputs with traces longer than inch.
Electrical Specifications
Parameter Supply Voltage, Inputs Clock Outputs Ambient Operating Temperature Soldering Temperature Storage Temperature Conditions Referenced -0.5 seconds IOH=-4mA IOH=-25mA IOL=25mA Load, VDD=5.0V Each output VDD-0.4 ±100 Minimum Typical Maximum VDD+0.5 Units
ABSOLUTE MAXIMUM RATINGS (Note
CHARACTERISTICS
Operating Voltage, Input High Voltage, Input Voltage, Output High Voltage Output High Voltage Output Voltage Operating Supply Current, Short Circuit Current Input Capacitance, pins Input Capacitance Actual mean frequency error versus target, note Actual mean frequency error versus target, note Actual mean frequency error versus target
13.5, 40.5MHz NTSC/PAL clocks
Controller clocks
0.02
CHARACTERISTICS
Input Frequency Output Clock Rise Time Output Clock Fall Time Output Clock Duty Cycle, High Time Output Clock Duty Cycle, High Time, 35.5MHz Absolute Clock Period Jitter 16.9344 2.0V 0.8V VDD/2 VDD/2
Notes: Stresses beyond those listed under Absolute Maximum Ratings could cause permanent damage device. Prolonged exposure levels above operating limits below Absolute Maximums affect device reliability. Provided crystal properly tuned, accurate 16.9344 input clock used.
Revision 12047 Printed 12/4/97 MicroClock Division Parkmoor
MDS1631B
MK1631 ICROCLOCK with NTSC/PAL Clock Source
Package Outline Package Dimensions
SOIC narrow
Symbol Inches 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 0.016 0.004 0.01 Millimeters 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 0.406 0.102 0.254
Ordering Information
Part/Order Number MK1631-01S MK1631-01STR Marking MK1631-01S MK1631-01S Package narrow SOIC Tape Reel Temperature 0-70°C 0-70°C
While information presented herein been checked both accuracy reliability, MicroClock Incorporated assumes responsibility either infringement patents other rights third parties, which would result from use. other circuits, patents, licenses implied. This product intended normal commercial applications. other applications such those requiring extended temperature range, high reliability, other extraordinary environmental requirements recommended without additional processing MicroClock. MicroClock reserves right change circuitry specifications without notice. MicroClock does authorize warrant MicroClock product life support devices critical medical instruments.
CHANGE HISTORY Version Date first published 2/07/96
Comments Original
Revision 12047 Printed 12/4/97 MicroClock Division Parkmoor
MDS1631B
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