Datasheet > IMISG501PB

IMISG501PB

更新时间： 2024-11-20 23:58:39

品牌	Logo	应用领域
其他 - ETC		晶体时钟发生器外围集成电路光电二极管
页数	文件大小	规格书
8页	161K
描述
CPU System Clock Generator

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IMISG501PB 数据手册

IMISG501

SYSTEM CLOCK CHIP

PATENT PENDING

March 1996

REDUCED EMI CLOCK GENERATOR

PRODUCT FEATURES

PRODUCT DESCRIPTION

Generates CPU Clock Signals for Microprocessor

Systems

The IMISG501 is a spectrum spread clock generator

specially designed for personal computers, laser

printers and other digital systems. IMISG501 uses a

patent pending concept to generate popular clock

frequencies that are intentionally broadbanded to

reduce electromagnetic interference. IMISG501

attenuates the radiated emission amplitudes from

products associated with either the clock harmonics or

any signals derived from the clock signals nominally 10

db and could significantly reduce the cost of complying

with the regulatory requirements.

Reduces Measured EMI by 10 db nominal

4V to 7V Operating Supply Range

Supports 80286-, 80386-, 80486-, PentiumÔ - and

29000-based designs

Wide range of selectable output frequencies

including 50, 25, 20 and 10 Mhz

PRCLK is the broadbanded output and can be

programmed to generate 50, 25, 20 and 10 Mhz with

S0 and S1 pins. A single, low cost external crystal is

required as reference frequency for the synthesizer.

Output modulation function can be turned off with the

SSON pin. Several power down modes add the

flexibility to operate the device in a completely static

mode to reduce standby currents and simplify system

board tests.

single, low cost crystal used as reference

frequency

Glitch-free switching

50% duty cycle

Power down mode for low power consumption

TTL or CMOS compatible outputs with 6mA drive

capability

PDIP/SOIC CONNECTION DIAGRAM

Low, short- and long-term jitter

VDD

OSCin

OSCout

VSS

MPSEL

AVDD

TEST

VDD

MPCLK

VSS

PRCLK

AVSS

LF1

16 PDIP and 16 Pin SOIC (300 mil body) package

options

BLOCK DIAGRAM

SSON

REF

/4 OR /12

44.2 MHz

MPCLK

MPSEL

APPLICATIONS

SPECTRUM

SPREAD

CLOCK GEN

PRCLK

IMISG501 eliminates the need for multiple oscillators

and generates the CPU clock signals for personal

computers, laser printers and other digital systems.

Supports 8086-, 80286-, 80386-, 80486-, PentiumÔ -

and 29000-based designs. IMISG501 can be used with

laptop or notebook computers to save power by

running the system slower than normal CPU speeds or

completely disabling the clocks in standby mode.

TEST

SSON

INTERNATIONAL MICROCIRCUITS, INC. 525 LOS COCHES ST.

MILPITAS, CA 95035 TEL: 408-263-6300 FAX 408-263-6571

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与IMISG501PB相关器件

型号	品牌	获取价格	描述	数据表
IMISG501XB	ETC	获取价格	CPU System Clock Generator
IMISG502APB	CYPRESS	获取价格	Processor Specific Clock Generator, 40MHz, CMOS, PDIP16, PLASTIC, DIP-16
IMISG502AXB	CYPRESS	获取价格	Processor Specific Clock Generator, 40MHz, CMOS, PDSO16, 0.300 INCH, SOIC-16
IMISG502PB	CYPRESS	获取价格	Processor Specific Clock Generator, 40MHz, CMOS, PDIP16, PLASTIC, DIP-16
IMISG502PX	ETC	获取价格	CPU System Clock Generator
IMISG502XB	CYPRESS	获取价格	Processor Specific Clock Generator, 40MHz, CMOS, PDSO16
IMISG504APB	CYPRESS	获取价格	Processor Specific Clock Generator, 120MHz, CMOS, PDIP16, PLASTIC, DIP-16
IMISG504AXB	CYPRESS	获取价格	Processor Specific Clock Generator, 120MHz, CMOS, PDSO16, 0.300 INCH, SOIC-16
IMISG508APB	ETC	获取价格	Miscellaneous Clock Generator
IMISG508AXB	ETC	获取价格	Miscellaneous Clock Generator

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