ICS9134-06 ICS9134-07 Advance Information Integrated Circuit Systems, Inc. 32 kHz Motherboard Frequency Generator General Description Features 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. • • 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 10µA 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. • • • • • • • • • IDD <10 µA 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 Fir chipsets 16-pin, 300-mil, SOIC package 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 Reference Clock 32.768 kHz Clock Clock Generator Generator 1 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 Decoding Table for CPU Clock 1 16 CPUS1 X2 2 15 CPUS0 X1 3 14 CPUCLK VDD32 4 13 VDD VDD 5 12 GND GND 6 11 14.3M 24M 7 10 PD24+KDB 32K 8 9 ICS9134-06 ICS9134-07 CPUS2 CPUS2 CPUS1 CPUS0 CPUCLK (MHz) 0 0 0 0 1 1 1 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 Off+14M off 80.00 25.00 66.66 20.00 50.00 33.33 4.00 ICS9134 Option KBOUT KEYBOARD CLOCK -06 -07 KBOUT 16 MHz 12 MHz 16-Pin SOIC Pin Descriptions PIN NUMBER PIN NAME DESCRIPTION TYPE 1 2 CPUS2 X2 I O 3 X1 I 4 VDD32 P 5 6 7 8 9 10 VDD GND 24M 32K KBOUT PD24+KBD P P O O O I 11 12 13 14 15 16 14.3M GND VDD CPUCLK CPUS0 CPUS1 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. 2 ICS9134-06 ICS9134-07 Absolute 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. Electrical Characteristics VDD = +3.0 to 3.7V, TA=0°C to 70°C unless otherwise stated DC Characteristics PARAMETER SYMBOL 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 VIL VIH IIL IIH VOL VOH IOL IOH IDD IDD IDD32 VDD32 Pull-up Resistor Value1 Rpu TEST CONDITIONS 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 MIN TYP MAX UNITS 0.7VDD -15 -2 0.85VDD 15 2.0 -7 0.9VDD 24 -13 9 12 4.6 - 0.2VDD 2 0.1 -8 17 24 12 - V V µA µA V V mA mA mA mA µA V 370 530 650 k ohm 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 AC Characteristics Rise Time1 Fall Time1 Rise Time1 Fall Time1 Duty Cycle1 Jitter, One Sigma1 Jitter, Absolute1 Input Frequency1 Power-up Time1 Transition Time1 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 Note: 1. Parameter guaranteed by design and characterization. Not 100% tested in production. 3 ICS9134-06 ICS9134-07 Electrical Characteristics VDD = +5V±10%, TA=0°C to 70°C unless otherwise stated DC Characteristics PARAMETER SYMBOL 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 VIL VIH IIL IIH VOL VOH IOL IOH IDD IDD IDD32 VDD32 Pull-up Resistor Value1 Rpu TEST CONDITIONS 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 MIN TYP MAX UNITS 2 -22 -2 2.4 25 2.0 -10 0.15 3.7 45 -58 15 22 7.5 - 0.8 2 0.4 -35 28 35 20 - V V µA µA V V mA mA mA mA µA V 380 550 680 k ohm 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 AC Characteristics Rise Time1 Fall Time1 Rise Time1 Fall Time1 Duty Cycle1 Jitter, One Sigma1 Jitter, Absolute1 Input Frequency1 Power-up Time1 Transition Time1 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 Note: 1. Parameter guaranteed by design and characterization. Not 100% tested in production. 4 ICS9134-06 ICS9134-07 Recommended External Circuit 32.768 kHz crystal VDD 2.2µF (Note 3) 0.1µF 0.1µF ICS9134-06 ICS9134-07 VDD Notes: 0.1µF 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 5 ICS9134-06 ICS9134-07 SOIC Package (wide body) LEAD COUNT DIMENSION L 16L 0.404 Ordering Information ICS9134-06M or ICS9134-07M Example: 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. 6