MK3200 ICST | Alldatasheet

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Technical content

32.768 kHz Clock Oscillator 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 Oscillator32.768 kHz crystal Power Down Output Buffer 32.768 kHz Clock Output Enable VDD GND

32.768 kHz Clock Oscillator 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 X2X1 GND VDD OE32.768K GND PD PD 32.768K Oscillator 0O n O n

1 Low Off

OE 32.768K Oscillator

0 Tri state (Hi-Z) On

Output Enable Select Table 0 = connect directly to GND 1 = connect directly to VDD

32.768 kHz Clock Oscillator 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 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.

32.768 kHz Clock Oscillator 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 l ife 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 Inchches Millimemeters 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 EH e A1 C A h x 45° L INDEX AREA