MK3235
Handheld System Clock Synthesizer
ICR O CLOC K
Electrical Specifications
Parameter
Conditions
Minimum
Typical
Maximum
Units
ABSOLUTE MAXIMUM RATINGS (note 1)
Supply Voltage, VDD
Referenced to GND
7
VDD+0.5
70
V
V
Inputs and Clock Outputs
Ambient Operating Temperature
Soldering Temperature
Storage Temperature
Referenced to GND
Max of 30 seconds
-0.5
0
°C
°C
°C
260
-65
150
DC CHARACTERISTICS (at 5.0V unless otherwise noted)
Operating Voltage, VDD
3.0
2.0
2.0
5.5
5.5
V
V
Operating Voltage,VDD32
Input High Voltage, VIH
VDD=5V
V
Input Low Voltage, VIL
VDD=5V
0.8
V
Output High Voltage, VOH, 3.3V or 5V
Output High Voltage, VOH
Output Low Voltage, VOL
IOH=-4mA
VDD-0.4
2.4
V
VDD=5V, IOH=-25mA
VDD=5V, IOL=25mA
VDD=3.3V
V
0.4
0.4
0.4
V
Input High Voltage, VIH
1.9
2.4
V
Input Low Voltage, VIL
VDD=3.3V
V
Output High Voltage, VOH
Output Low Voltage, VOL
VDD=3.3V, IOH=-8mA
VDD=3.3V, IOL=8mA
No Load
V
V
IDD Operating Supply Current, 5V
IDD32 with only 32 kHz running, 5V
IDD Operating Supply Current, 3.3V
9
3.5
6
mA
µA
mA
µA
µA
mA
mA
pF
No Load
No Load
IDD32 with only 32 kHz output running, 3.3V No Load
2.5
1
IDD32, only 32 kHz osc. running, 3.3V, note 2
Short Circuit Current, 5V
32kHz output off. PD=0
32kHz output
±30
±80
7
Short Circuit Current, 5V
14, 1.8MHz outputs
Input Capacitance
AC CHARACTERISTICS (at 5.0V unless otherwise noted)
Input Frequency
32.768
kHz
ns
Output Clock Rise and Fall Time, 0.2 to 0.8VDD
2
Output Clock Duty Cycle, all MHz clocks
32.768 kHz Clock Duty Cycle
At VDD/2
45
49 to 51
57
55
%
At VDD32/2
14.318 MHz
%
Absolute Clock Period Jitter
-500
500
ps
Power up time, to all clocks stable, 32k running VDD=3.3 or 5V
9
ms
ms
ms
Power on time,VDD32=0V to all clocks stable
Power on time, all power down pins taken high
32.768kHz crystal with ESR £25kW
500
15
1000
32.768kHz oscillator running
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.
Note 2: When PD=0 (low) and VDD32 is greater than 2.0V, then the 32kHz oscillator will continue to run on the chip, but the
output is turned off. This allows for a quick power-up (<20ms), while the chip is only consuming approximately 1µA.
MDS 3235 D
3
Revision 092397
Printed 11/16/00
Integrated Circuit Systems, Inc.•525 Race Street•San Jose•CA•95126•(408)295-9800tel•www.icst.com