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參數資料
| 型號： | ICS9133X |
| 英文描述： | 32 kHz Motherboard Frequency Generator |
| 中文描述： | 32千赫頻率發生器主板 |
| 文件頁數： | 1/8頁 |
| 文件大小： | 144K |
| 代理商： | ICS9133X |
Integrated
Circuit
Systems, Inc.
General Description
The
ICS9133X
is designed to generate clocks for all 286, 386,
486, Pentium and RISC-based motherboards, including lap-
tops 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, twice CPUclock frequency, keyboard clock, floppy
disk controller clock, serial communications clock and bus
clocks. Different frequencies from clock #2 can be selected
using the frequency select pins, but clock #1 will be at 14.318
MHz for all standard versions.
Features
Single 32.768 kHz crystal generates all PC
motherboard clocks
Cost-reduced version of popular ICS9132
Contains internal crystal load capacitors and
feedback bias
3 independent clock generators
Generates CPU clocks from 12.5 to 100 MHz
Up to 7 output clocks
Separate VDD for 32 kHz clock
Output enable tristates outputs
Power-down options available
Operates from 3.3V or 5.0V supply
Operates up to 66 MHz at 3.3V
Skew controlled 1X and 2X CPU clocks
20-pin PDIP or SOIC package
ICS9133X
ICS reserves the right to make changes in the device data identified in this publication
without further notice. ICS advises its customers to obtain the latest version of all device
data to verify that any information being relied upon by the customer is current and accurate.
9133X
Rev
A
052897P
Block Diagram
32 kHz Motherboard Frequency Generator
VDD32 Supply
The
ICS9133X
has 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
ICS9133X
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
ICS9133X
works with
+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
ICS9133X
further reduces 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.
相關PDF資料 |
PDF描述 |
|---|---|
| ICS9134-07 | 32 kHz Motherboard Frequency Generator |
| ICS9134-06 | Small Component Shipper; Depth:1"; Height:3-3/4"; Width:3-3/4" RoHS Compliant: NA |
| ICS9134-06M | 32 kHz Motherboard Frequency Generator |
| ICS9134-07M | 32 kHz Motherboard Frequency Generator |
| ICS9147-01 | Switch Mode Power Supply; Output Power:80W; Mounting Type:PCB; Output Current:8A; Output Power Max:80W; Output Power Min:60MW; Output Voltage:5VDC; Series:LPT60; Supply Voltage:370VDC; Supply Voltage Max:264VAC RoHS Compliant: Yes |
相關代理商/技術參數 |
參數描述 |
|---|---|
| ICS9133X01 | 制造商:ICS 功能描述: |
| ICS9133X-01CN20 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:CPU System Clock Generator |
| ICS9133X-01CW20 | 制造商:ICS 制造商全稱:ICS 功能描述:32 kHz Motherboard Frequency Generator |
| ICS9133XM20 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Peripheral IC |
| ICS9133XN20 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Peripheral IC |
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