MK3235 查看數據表（PDF） - Integrated Circuit Systems
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MK3235 Datasheet PDF : 4 Pages
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MK3235
I C R O C LOC K Handheld System Clock Synthesizer
Electrical Specifications
Parameter
Conditions
ABSOLUTE MAXIMUM RATINGS (note 1)
Minimum
Supply Voltage, VDD
Referenced to GND
Inputs and Clock Outputs
Referenced to GND
-0.5
Ambient Operating Temperature
0
Soldering Temperature
Max of 30 seconds
Storage Temperature
-65
DC CHARACTERISTICS (at 5.0V unless otherwise noted)
Operating Voltage, VDD
3.0
Operating Voltage,VDD32
2.0
Input High Voltage, VIH
VDD=5V
2.0
Input Low Voltage, VIL
VDD=5V
Output High Voltage, VOH, 3.3V or 5V
IOH=-4mA
VDD-0.4
Output High Voltage, VOH
VDD=5V, IOH=-25mA 2.4
Output Low Voltage, VOL
VDD=5V, IOL=25mA
Input High Voltage, VIH
VDD=3.3V
1.9
Input Low Voltage, VIL
VDD=3.3V
Output High Voltage, VOH
VDD=3.3V, IOH=-8mA 2.4
Output Low Voltage, VOL
VDD=3.3V, IOL=8mA
IDD Operating Supply Current, 5V
No Load
IDD32 with only 32 kHz running, 5V
No Load
IDD Operating Supply Current, 3.3V
No Load
IDD32 with only 32 kHz output running, 3.3V No Load
IDD32, only 32 kHz osc. running, 3.3V, note 2 32kHz output off. PD=0
Short Circuit Current, 5V
32kHz output
Short Circuit Current, 5V
14, 1.8MHz outputs
Input Capacitance
AC CHARACTERISTICS (at 5.0V unless otherwise noted)
Input Frequency
Output Clock Rise and Fall Time, 0.2 to 0.8VDD
Output Clock Duty Cycle, all MHz clocks
At VDD/2
45
32.768 kHz Clock Duty Cycle
At VDD32/2
Absolute Clock Period Jitter
14.318 MHz
-500
Power up time, to all clocks stable, 32k running VDD=3.3 or 5V
Power on time,VDD32=0V to all clocks stable 32.768kHz crystal with ESR ≤25kΩ
Power on time, all power down pins taken high 32.768kHz oscillator running
Typical Maximum
7
VDD+0.5
70
260
150
5.5
5.5
0.8
0.4
0.4
0.4
9
3.5
6
2.5
1
±30
±80
7
32.768
2
49 to 51
55
57
500
9
500
1000
15
Units
V
V
°C
°C
°C
V
V
V
V
V
V
V
V
V
V
V
mA
µA
mA
µA
µA
mA
mA
pF
kHz
ns
%
%
ps
ms
ms
ms
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
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