MK3200

MK3200 32.768 kHz Clock Oscillator Description 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. Features • 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 Block Diagram VDD GND Power Down X1 32.768 kHz crystal X2 Crystal Oscillator Output Buffer 32.768 kHz Clock Output Enable MDS 3200 C 1 Revision 101001 Integrated Circuit Systems, Inc. • 525 Race Street • San Jose •CA • 95126• (408)295-9800tel • www.icst.com MK3200 32.768 kHz Clock Oscillator Pin Assignment Power Down Select Table PD 0 1 8 7 6 5 X2 GND PD OE 0 = connect directly to GND 1 = connect directly to VDD 32.768K On Low Oscillator On Off MK3200 X1 VDD GND 32.768K 1 2 3 4 Output Enable Select Table OE 0 1 32.768K Tri state (Hi-Z) On Oscillator On On 8 pin (150 mil) SOIC Pin Descriptions Number 1 2 3 4 5 6 7 8 Name X1 VDD GND 32.768K OE PD GND X2 Description Crystal connection. Connect to a 32.768 kHz crystal. VDD. Connect to + 3.3 V. Connect to ground. 32.768 kHz clock output. Output Enable. Power Down. Turns off entire chip when high. Connect to ground. Crystal connection. Connect to a 32.768 kHz crystal. MDS 3200 C 2 Revision 101001 Integrated Circuit Systems, Inc. • 525 Race Street • San Jose •CA • 95126• (408)295-9800tel • www.icst.com MK3200 32.768 kHz Clock Oscillator Electrical Specifications Parameter Conditions ABSOLUTE MAXIMUM RATINGS (note 1) te Supply voltage, VDD Referenced to GND Inputs and Clock Outputs Referenced to GND Ambient Operating Temperature Storage temperature DC CHARACTERISTICS (VDD = 3.3 V u nless noted) Operating Voltage, VDD Output High Voltage, VOH IOH=-3mA Output Low Voltage, VOL IOL=3mA Output High Voltage, VOH, CMOS level IOH=-1.5mA Operating Supply Current, IDD, PD=0, OE=1 No Load Short Circuit Current AC CHARACTERISTICS (VDD = 3.3 V u nless noted) Input Crystal Frequency Input Crystal Accuracy Output Clock Rise Time 0.8 to 2.0V Output Clock Fall Time 2.0 to 0.8V Output Clock Duty Cycle At VDD/2 Minimum Typical Maximum Units V V °C °C V V V V µA mA kHz ppm ns ns % -0.5 -40 -65 2 .375 2.4 VDD-0.4 3.5 ±6 32.768 7 VDD+0.5 85 150 5.250 0.4 40 50 ±30 8 8 60 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 Ω 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. MDS 3200 C 3 Revision 101001 Integrated Circuit Systems, Inc. • 525 Race Street • San Jose •CA • 95126• (408)295-9800tel • www.icst.com MK3200 32.768 kHz Clock Oscillator Package Outline and Package Dimensions (For current dimensional specifications, see JEDEC Publication No. 95.) 8 pin SOIC Inch ches Min Max 0.0532 0.0688 0.0040 0.0098 0.0130 0.0200 0.0075 0.0098 0.1890 0.1968 0.1497 0.1574 .050 BSC BS 0.2284 0.2440 0.0099 0.0195 0.0160 0.0500 Millime meters Min Max 1.35 1.75 0.10 0.24 0.33 0.51 0.19 0.24 4.80 5.00 3.80 4.00 1.27 BSC 5.80 6.20 0.25 0.50 1.27 0.41 E INDEX AREA H 1 2 h x 45° D Symbol A A1 B C D E e H h L A1 e B C A L Ordering Information Part/Order Number MK3200S MK3200STR MK3200SI MK32000SITR Marking MK3200S MK3200S MK3200SI MK3200SI Shipping packaging tubes tape and reel tubes tape and reel Package 8 pin SOIC 8 pin SOIC 8 pin SOIC 8 pin SOIC Temperature 0-70 °C 0-70 °C -40-85 °C -40-85 °C 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. MDS 3200 C 4 Revision 101001 Integrated Circuit Systems, Inc. • 525 Race Street • San Jose •CA • 95126• (408)295-9800tel • www.icst.com