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Part Number: ICS9131
Description: The ICS9131 offers a tiny footprint solution for generating a selectable CPU clock from a 32.768 kHz c...
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ICS9131
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DataSheet
General Description
ICS9131 General Description
The ICS9131 offers a tiny footprint solution for generating a selectable CPU clock from a 32.768 kHz crystal. The device allows a variety of microprocessors to be clocked by changing the state of address lines FS0, FS1, and FS2. The ICS9131 is the ideal solution for replacing high speed oscillators and for reducing clock speeds to save power in computers. The device provides smooth, glitch-free frequency transitions so that the CPU can continue to operate during slow down or speed up. The rate of frequency change makes the ICS9131 compatible with all 386DX, 386SX, 486DX, 486DXZ, 486SX and Pentium™ microprocessors.
The ICS9131 is driven from a single 32.768 kHz crystal. The only external components required are the crystal and a 10M ohm resistor. The device generates the 14.318 MHz system clock, eliminating the need for a 14.318 MHz crystal. High- Performance applications may require high speed cloc termination components.
ICS9131 Maximum Ratings
VDD referenced to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7V
Operating temperature under bias. . . . . . . . . . . . . 0°C to +70°C
Storage temperature . . . . . . . . . . . . . . . . . . . . .-40°C to +150°C
Voltage on I/O pins referenced to GND. . . GND -0.5V to VDD +0.5V
Power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 Watts
Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect product reliability.
ICS9131 Features
• Single 32.768 kHz crystal generates system clock and selectable CPU clock
• Generates CPU clocks from 8 MHz to 100 MHz.
• Operates from 3.3V or 5.0V supply
• Operates up to 66 MHz at 3.3V
• Separate VDD for 32 kHz clock enables it to run from battery
• STOPCLK feature allows for a glitch-free turn-on and Pen-turn-off of the CPU clock to static processors
• Output enable tristates outputs
• 16-pin PDIP or SOIC package
• Frequency selects allow for a smooth transition of the CPUCLK
• Generates CPU clocks from 8 MHz to 100 MHz.
• Operates from 3.3V or 5.0V supply
• Operates up to 66 MHz at 3.3V
• Separate VDD for 32 kHz clock enables it to run from battery
• STOPCLK feature allows for a glitch-free turn-on and Pen-turn-off of the CPU clock to static processors
• Output enable tristates outputs
• 16-pin PDIP or SOIC package
• Frequency selects allow for a smooth transition of the CPUCLK
ICS9131 Connection Diagram
ICS9131-01CN16
PDF/DataSheet Download
- Datasheet: ICS9131-01CN16
- File Size: 302155 KB
- Manufacturer: ICST [Integrated Circuit Systems]
- Click here to Download
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