MK3230
Portable System Clock Synthesizer
MDS 3230 F 3Revision 022798 Printed 11/16/00
Integrated Circuit Systems, Inc.•525 Race Street•San Jose•CA•95126•(408)295-9800tel•www.icst.com
ICROCLOCK
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.
Parameter Conditions Minimum Typical Maximum Units
ABSOLUTE MAXIMUM RATINGS (note 1)
ABSOLUTE MAXIMUM RATINGS (note 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 0 70 °C
Soldering Temperature Max of 30 seconds 260 °C
Storage Temperature -65 150 °C
DC CHARACTERISTICS
Operating Voltage, VDD 3.0 5.5 V
Operating Voltage,VDD32 2.0 5.5 V
Input High Voltage, VIH VDD=5V 2.0 V
Input Low Voltage, VIL VDD=5V 0.8 V
Output High Voltage, VOH VDD=5V, IOH=-25mA 2.4 V
Output Low Voltage, VOL VDD=5V, IOL=25mA 0.4 V
Input High Voltage, VIH VDD=3.3V 1.9 V
Input Low Voltage, VIL VDD=3.3V 0.4 V
Output High Voltage, VOH VDD=3.3V, IOH=-8mA 2.4 V
Output Low Voltage, VOL VDD=3.3V, IOL=8mA 0.4 V
IDD Operating Supply Current, 5V No Load, 80MHz 25 mA
IDD32 with only 32 kHz running, 5V No Load 3.5 µA
IDD Operating Supply Current, 3.3V No Load, 80MHz 15 mA
IDD32 with only 32 kHz running, 3.3V No Load 2.5 µA
Short Circuit Current, 5V 32 kHz output ±30 mA
Short Circuit Current, 5V Each MHz output ±100 mA
Input Capacitance 7 pF
Internal Crystal Capacitance Pins 2, 3 only 15 pF
AC CHARACTERISTICS
Input Frequency 32.768 kHz
Output Clock Rise and Fall Time, 0.2 to 0.8VDD 2 ns
Output Clock Duty Cycle, all MHz clocks At VDD/2 45 49 to 51 55 %
32.768 kHz Clock Duty Cycle At VDD32/2 57 %
Absolute Clock Period Jitter, CPU clock 25 to 80 MHz -500 500 ps
Power up time, CPU off to 80 MHz, 32k running VDD=3.3 or 5V 9 ms
Transition time, 4 MHz to 80 MHz VDD=3.3 or 5V 4 ms
Transition time, 80 MHz to 4 MHz VDD=3.3 or 5V 2.5 ms
Power on time,VDD32=0V to all clocks stable
32.768kHz crystal with ESR ≤25kΩ
32.768kHz crystal with ESR ≤25kΩ
500 750 ms
Electrical Specifications
Note on the 14.32 MHz output : The actual output frequency from this clock is 14.3196 MHz, versus
14.31818 MHz that has been traditional. This output can be used as the input to digital chips providing
functions such as timing or keyboard, but it should NOT be used to drive a graphics PLL that is used for a
CRT display. Instead, use a 14.318MHz crystal as the input to the CRT graphics device.