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Integrated Circuit Systems, Inc.
ICS9134-06 ICS9134-07 Advance Information
32 kHz Motherboard Frequency Generator
General Description
The ICS9134-06 and ICS9134-07 are designed to generate clocks for all 286, 386, 486, Pentium and RISC-based motherboards, including laptops and notebook computers. The only external components required are a 32.768 kHz crystal and decoupling capacitors. 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 clock termination components. The chip includes three independent clock generators plus the 32.768 kHz reference clock to produce all necessary frequencies, including real time clock/DRAM refresh, master clock, CPU clock, keyboard clock, floppy disk controller clock, serial communications clock and bus clocks. Different frequencies from clocks #2 can be selected using the frequency select pins, but clock #1 will be at 14.318 MHz for all standard versions.
Features
* * * * * * * * * * * IDD <10 A when 32 kHz is running on VDD32 Single 32.768 kHz crystal generates all PC motherboard clocks 3 independent clock generators Generates CPU clocks from 4.0 to 80 MHz Up to 5 output clocks Separate VDD for 32 kHz clock Power-down options available Operates from 3.3V or 5.0V supply Operates up to 66 MHz at 3.3V Supports OPTi 80C463/5 and FirTM chipsets TM 16-pin, 300-mil, SOIC package
VDD32 Supply
The ICS9134-06 and ICS9134-07 have a separate power supply for the 32.768 kHz oscillator circuitry. This allows the 32 kHz clock to run from a battery or other source while the main power to the chip is disconnected. The VDD32 supply is guaranteed to operate down to +2.0V, with the clock consuming less than 10A at +3.3V with the main VDD at 0V. The frequencies and power-down options in the ICS9134-06 and ICS9134-07 are mask programmable. Customer specific masks can be made and prototypes delivered within 6-8 weeks from receipt of order. Integrated Circuit Systems also offers standard versions, such as that described in this data sheet.
Applications
Notebook/Palmtop Computers: The ICS9134-06 and ICS9134-07 work with +3.3V and +5V and a single 32.768 kHz crystal, making it the ideal solution for generating clocks in portables with minimum board space. The user can save power by using this single part instead of oscillators or other frequency generators. The ICS9134-06 and ICS9134-07 further reduce the current consumption by having the ability to completely shut down the individual clocks when not in use, while still maintaining the separately powered 32.768 kHz clock.
Block Diagram
VDD32
32.768 kHz crystal 32.768 kHz Reference Clock
Clock Generator 1
Clock Generator 2 CPUCLK
14.318 MHz Clock Generator 3 Peripheral Clocks
Fir is a trademark of Picopower Corporation.
9134-06 9134-07 RevC111695
ICS9134-06 ICS9134-07
Pin Configuration
CPUS2 X2 X1 VDD32 VDD GND 24M 32K 1 2 16 15 CPUS1 CPUS0 CPUCLK VDD GND 14.3M PD24+KDB KBOUT ICS9134 Option KEYBOARD CLOCK 8 9 KBOUT -06 16 MHz -07 12 MHz
Decoding Table for CPU Clock
CPUS2 0 0 0 0 1 1 1 1 CPUS1 0 0 1 1 0 0 1 1 CPUS0 0 1 0 1 0 1 0 1 CPUCLK (MHz) Off+14M off 80.00 25.00 66.66 20.00 50.00 33.33 4.00
4 5 6 7
ICS9134-06 ICS9134-07
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14 13 12 11 10
16-Pin SOIC
Pin Descriptions
PIN NUMBER 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 PIN NAME CPUS2 X2 X1 VDD32 VDD GND 24M 32K KBOUT PD24+KBD 14.3M GND VDD CPUCLK CPUS0 CPUS1 DESCRIPTION TYPE I O I P P P O O O I O P P O I I Select 2 for 2XCPU and CPU frequencies. See Table above. Crystal connection. Connect to 32.768 kHz crystal. Includes internal XTAL load capacitance. Crystal connection. Connect to 32.768 kHz crystal. This pin includes internal XTAL load capacitance and feedback bias for a 32.768 kHz crystal. Separate power supply connection for 32.768 kHz clock. Will operate down to 2.0V, independent of the rest of the circuit VDD. Connect to +3.3V or +5V. Connect to ground. 24 MHz floppy (or super I/O) clock output. 32.768 kHz square wave clock output. Keyboard clock output, fixed 16 MHz (-06) or 12 MHz (-07). Power-down 24M+keyboard. Shuts off both clock outputs, pins 7 & 9 when low. 14.318 MHz system clock output. Connect to ground. Connect to +3.3V or +5V. CPUCLK output. See Table above. Select 0 for 2XCPU and CPU frequencies. See Table above. Select 1 for 2XCPU and CPU frequencies. See Table above.
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ICS9134-06 ICS9134-07
Absolute Maximum Ratings
VDD referenced to GND . . . . . . . . . . . . . . . . . . . . . . 7V Operating temperature under bias. . . . . . . . . . . . . . . . 0C to 70C Storage temperature . . . . . . . . . . . . . . . . . . . . . . . . . . -40C to +150C 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.
Electrical Characteristics
VDD = +3.0 to 3.7V, TA=0C to 70C unless otherwise stated DC Characteristics PARAMETER Input Low Voltage Input High Voltage Input Low Current Input High Current Output Low Voltage1 Output High Voltage1 Output Low Current1 Output High Current1 Supply Current Supply Current VDD32 Supply Current VDD32 Supply Voltage Pull-up Resistor Value1 Rise Time1 Fall Time1 Rise Time1 Fall Time1 Duty Cycle1 Jitter, One Sigma1 Jitter, Absolute1 Input Frequency1 Power-up Time1 Transition Time1 SYMBOL VIL VIH IIL IIH VOL VOH IOL IOH IDD IDD IDD32 VDD32 Rpu AC Characteristics tr tf tr tf dt tjis tjab fi tpu tft 15pF load, 0.8 to 2.0V 15pF load, 2.0 to 0.8V 15pF load, 20% to 80% 15pF load, 80% to 20% 15pF load As compared with clock period. Off to 33.3 MHz 4 to 66.6 MHz 2 2 40 25 1.5 1.5 2.5 2.5 50 1 2 32.768 4 2 2 3.5 3.5 55 2 5.5 40 8 4.8 ns ns ns ns % % % kHz ms ms TEST CONDITIONS MIN 0.7VDD -15 -2 0.85VDD 15 2.0 370 TYP -7 0.9VDD 24 -13 9 12 4.6 530 MAX 0.2VDD 2 0.1 -8 17 24 12 650 UNITS V V A A V V mA mA mA mA A V k ohm
VIN=0V VIN=VDD IOL=6mA IOH=-4mA VOL=0.2VDD VOH=0.7VDD No load @ 33 MHz No load @ 66.6 MHz No load, VDD32=3.7V VDD=0 to 3.7V, 32 kHz output operating
Note: 1. Parameter guaranteed by design and characterization. Not 100% tested in production.
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ICS9134-06 ICS9134-07
Electrical Characteristics
VDD = +5V10%, TA=0C to 70C unless otherwise stated DC Characteristics PARAMETER Input Low Voltage Input High Voltage Input Low Current Input High Current Output Low Voltage1 Output High Voltage1 Output Low Current1 Output High Current1 Supply Current Supply Current VDD32 Supply Current VDD32 Supply Voltage Pull-up Resistor Value1 Rise Time1 Fall Time1 Rise Time1 Fall Time1 Duty Cycle1 Jitter, One Sigma1 Jitter, Absolute1 Input Frequency1 Power-up Time1 Transition Time1 SYMBOL VIL VIH IIL IIH VOL VOH IOL IOH IDD IDD IDD32 VDD32 Rpu AC Characteristics tr tf tr tf dt tjis tjab fi tpu tft 15pF load, 0.8 to 2.0V 15pF load, 2.0 to 0.8V 15pF load, 20% to 80% 15pF load, 80% to 20% 15pF load As compared with clock period. Off to 80 MHz 4 to 80 MHz 48 25 1 1 2 2 52 1 2 32.768 7 1.5 1.5 3 3 58 2 5 40 14 5 ns ns ns ns % % % kHz ms ms TEST CONDITIONS MIN 2 -22 -2 2.4 25 2.0 380 TYP -10 0.15 3.7 45 -58 15 22 7.5 550 MAX 0.8 2 0.4 -35 28 35 20 680 UNITS V V A A V V mA mA mA mA A V k ohm
VIN=0V VIN=VDD IOL=10mA IOH=-30mA VOL=0.8V VOH=2.0V No load @ 33 MHz No load @ 80 MHz No load, VDD32=5.5V VDD=0 to 5.5V, 32 kHz output operating
Note: 1. Parameter guaranteed by design and characterization. Not 100% tested in production.
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ICS9134-06 ICS9134-07
Recommended External Circuit
32.768 kHz crystal
Notes:
ICS9134-06 ICS9134-07
VDD VDD 2.2F
(Note 3)
0.1F 0.1F
0.1F
1) The external components shown should be placed as close to the device as possible. 2) Pins 5 and 13 should be connected together externally. One decoupling capacitor may suffice for both pins. 3) May be part of system decoupling.
Typical 32 kHz Supply Current
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ICS9134-06 ICS9134-07
SOIC Package (wide body) Ordering Information
ICS9134-06M or ICS9134-07M
Example:
LEAD COUNT DIMENSION L
16L 0.404
ICS XXXX-PPP M
Package Type
M=SOIC
Pattern Number (2 or 3 digit number for parts with ROM code patterns) Device Type (consists of 3 or 4 digit numbers) Prefix
ICS, AV=Standard Device
ADVANCE INFORMATION documents contain information on new products in the sampling or preproduction phase of development. Characteristic data and other specifications are subject to change without notice.
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