ICS2684M, ICS2694, ICS2694M004 Selling Leads, Datasheet
MFG:ICS Package Cooled:SOP D/C:05+
ICS2684M, ICS2694, ICS2694M004 Datasheet download
Part Number: ICS2684M
MFG: ICS
Package Cooled: SOP
D/C: 05+
ICS2684M, ICS2694, ICS2694M004
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Info of ICS2684M
Info of ICS2694
Info of ICS2694M004
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About ICS1493-17
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Datasheet: ICS1493-17
File Size: 252572 KB
Manufacturer: ICST
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About ICS2694
PDF/DataSheet Download
Datasheet: ICS2694
File Size: 261005 KB
Manufacturer: ICST [Integrated Circuit Systems]
Download : Click here to Download
About ICS1493-17
PDF/DataSheet Download
Datasheet: ICS1493-17
File Size: 252572 KB
Manufacturer: ICST
Download : Click here to Download
ICS2694 General Description
The ICS2694 Motherboard Clock Generator is an integrated circuit using PLL and VCO technology to generate virtually all the clock signals required in a PC. The use of the device can be generalized to satisfy the timing needs of most digital systems by reprogramming the VCO or reconfiguring the counter stages which derive the output frequencies from the VCO's.
The primary VCO is customarily used to generate the CPU clock and is so labeled on the ICS2694. Pre-programmed frequency sets are listed on page 6. These choices were made to match the major microprocessor families. CPUSEL (0-3) allow the user to select the appropriate frequency for the application.
Due to the filter in the phase-locked loop, the CPUCLK will move in a linear fashion from one frequency to a newlyselected frequency without glitches. If a fixed CPUCLK value is desired, CPUSEL (0-3) may be hard wired to the desired address with STROBE tied high. (It has a pull-up.) For board test and debug, pulling OUTPUTE to Ground will tristate all the outputs.
ICS2694 Maximum Ratings
Supply Voltage . . . . . . . . . . . . . . . . VDD. . . . . . . -0.5V to +7V
Input Voltage . . . . . . . . . . . . . . . VIN . . . -0.5V to VDD +0.5V
Output Voltage . . . . . . .. . . . . . VOUT. . . -0.5V to VDD +0.5V
Clamp Diode Current . . . . . . . . . . . VIK & IOK.. . . . . . ±30mA
Output Current per Pin . . . . . . . . . . IOUT . . . . . . . . . ±50mA
Operating Temperature . . . . . . . . . . TO . . . . . 0 to + 150
Storage Temperature . . . . . . . . . . . . TS . .. . -85 to + 150
Power Dissipation. . . . . . . . . . . . . . PD . . . . . . . . . . . . . 500mW
Values beyond these ratings may damage the device. This device contains circuitry to protect the inputs and outputs against damage due to high static voltages or electric fields; however, it is advised that normal precautions be taken to avoid applications of any voltage higher than the maximum rated voltages. For proper operation, it is recommended that VIN and VOUT be constrained
to > = VSS and < = VDD.
Input Voltage . . . . . . . . . . . . . . . VIN . . . -0.5V to VDD +0.5V
Output Voltage . . . . . . .. . . . . . VOUT. . . -0.5V to VDD +0.5V
Clamp Diode Current . . . . . . . . . . . VIK & IOK.. . . . . . ±30mA
Output Current per Pin . . . . . . . . . . IOUT . . . . . . . . . ±50mA
Operating Temperature . . . . . . . . . . TO . . . . . 0 to + 150
Storage Temperature . . . . . . . . . . . . TS . .. . -85 to + 150
Power Dissipation. . . . . . . . . . . . . . PD . . . . . . . . . . . . . 500mW
Values beyond these ratings may damage the device. This device contains circuitry to protect the inputs and outputs against damage due to high static voltages or electric fields; however, it is advised that normal precautions be taken to avoid applications of any voltage higher than the maximum rated voltages. For proper operation, it is recommended that VIN and VOUT be constrained
to > = VSS and < = VDD.
ICS2694 Features
· Low cost - eliminates multiple oscillators and Count Down Logic
· Primary VCO has 16 Mask Programmable frequencies (normally CPU clock)
· Secondary VCO has 1 Mask Programmable frequency (usually 96 MHz)
· Pre-programmed versions for typical PC applications
· 10 Outputs in addition to the primary CPU clock
· Capability to reconfigure counter stages to change the frequencies of the outputs via mask options
· Advanced PLL design
· On-chip PLL filters
· Very Flexible Architecture
· Primary VCO has 16 Mask Programmable frequencies (normally CPU clock)
· Secondary VCO has 1 Mask Programmable frequency (usually 96 MHz)
· Pre-programmed versions for typical PC applications
· 10 Outputs in addition to the primary CPU clock
· Capability to reconfigure counter stages to change the frequencies of the outputs via mask options
· Advanced PLL design
· On-chip PLL filters
· Very Flexible Architecture
ICS2694 Typical Application
· CPU clock and Co-processor clock
· Hard Disk and Floppy Disk clock
· Keyboard clock
· Serial Port clock
· Bus clock
· System counting or timing functions
· Hard Disk and Floppy Disk clock
· Keyboard clock
· Serial Port clock
· Bus clock
· System counting or timing functions
ICS2694 Connection Diagram
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