ASM3P4201A [PULSECORE]

Multi-Output Custom Clock Generator; 多路输出定制时钟发生器


型号：	ASM3P4201A
厂家：	PulseCore Semiconductor
描述：	Multi-Output Custom Clock Generator 多路输出定制时钟发生器时钟发生器
文件：	总7页 (文件大小：322K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

July 2006

rev 0.2

ASM3P4201A

Multi-Output Custom Clock Generator

Features

clock generator. The five high frequency Clock outputs

are generated using an inexpensive 20MHz Crystal or

external reference clock. The accuracy of the 20MHz

Input Clock should be within ±50ppm. The output clocks

consist of a low EMI spread spectrum clock and other

non-spread clocks. Three Select bits choose the

combination of Output Clock Frequency. Refer to the

Output Frequency Selection Table for the values. Output

clocks can be disabled using the STBY pin. The device

operates from a Supply Voltage of 3.3V±0.3V with a

tolerable ripple voltage of 50mV . The device is available

in a 20 pin TSSOP JEDEC package.

• Generates five clock outputs from an inexpensive

20MHz crystal or external reference clock.

• Output Frequencies are selectable through select bits

• Generates an EMI optimized clock signal at the output.

• ±1.5% (Typ) Centre Spread for Spread Spectrum Clock

Outputs

• Operates with a 3.3V ± 0.3V Supply Voltage

• Output Clocks disable feature using STBY pin

• Available in 20-pin TSSOP.

Product Description

The ASM3P4201A is a versatile multi output custom

Block Diagram

STBY

S0 S1 S2

VDD

CLK6

CLK1

XIN

Crystal

XOUT

Oscillator

PLL

CLK5

CLK2

CLK3

CLK4

GND

PulseCore Semiconductor Corporation

1715 S. Bascom Ave Suite 200, Campbell, CA 95008 • Tel: 408-879-9077 • Fax: 408-879-9018

www.pulsecoresemi.com

Notice: The information in this document is subject to change without notice.

July 2006

ASM3P4201A

rev 0.2

Pin Assignment

XOUT

VDD

XIN

STBY

CLK6

VDD

GND

CLK1

ASM3P4201A

GND

CLK3

CLK4

CLK5

CLK2

GND

20 pin TSSOP

Pin Description

Pin #

Pin Name Pin Type

Pin Description

Crystal connection or external reference frequency input. It can be connected to

a 20MHz Fundamental mode crystal or to an external reference clock.

XIN

Input

Select Bit for Desired Output Frequency at different output pins. Refer to the

Output Frequency Selection Table for details. Has an internal pull down resistor

Select Bit for Desired Output Frequency at different output pins. Refer to the

Output Frequency Selection Table for details. Has an internal pull down resistor

CLK6

VDD

GND

CLK1

Output

Power

Output

Clock Output. Refer to the Output Frequency Selection Table for details.

Connect to +3.3V.

Connect to ground.

Clock Output. Refer to the Output Frequency Selection Table for details.

No connect

CLK2

GND

Output

Power

Clock Output. Refer to the Output Frequency Selection Table for details.

Connect to ground.

No connect

CLK5

Output

Clock Output. Refer to the Output Frequency Selection Table for details.

Spread Spectrum Clock Output. Refer to the Output Frequency Selection Table

CLK4

Output

for details.

Spread Spectrum Clock Output. Refer to the Output Frequency Selection Table

CLK3

Output

for details.

GND

VDD

Power

Connect to ground.

Connect to +3.3V.

Select Bit for Desired Output Frequency at different output pins. Refer to the

Input

Output Frequency Selection Table for details. Has an internal pull down resistor

STBY

VDD

Input

Power

When this pin is made is HIGH, all the output clocks are enabled.

Connect to +3.3V.

Crystal connection. If an external reference clock is used, this pin must be left

XOUT

Output

unconnected.

Multi-Output Custom Clock Generator

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Notice: The information in this document is subject to change without notice.

July 2006

rev 0.2

ASM3P4201A

Output Frequency Selection Table

Selection

CLK1

CLK2

(MHz)

CLK3*

(MHz)

CLK4*

(MHz)

CLK5

CLK6

(MHz)

Bits

(MHz)

39.5

36.6

* CLK3 and CLK4 are Spread Spectrum Clocks

Absolute Maximum Ratings

Symbol

Parameter

Rating

Unit

VDD

V_IN

T_STG

T_A

T_s

T_J

Power Supply Voltage relative to Ground

Input Voltage relative to Ground (Input Pins)

Storage temperature

-0.5 to +4.6

-0.5 to VDD+0.3

-65 to +150

-20 to +85

260

°C

Operating temperature

Max. Soldering Temperature (10 sec)

Junction Temperature

125

Static Discharge Voltage

(As per JEDEC STD22- A114-B)

T_DV

Note: These are stress ratings only and are not implied for functional use. Exposure to absolute maximum ratings for prolonged periods of time may affect

device reliability.

DC Electrical Characteristics

(Test condition: All parameters are measured at room temperature (+ 25°C) unless otherwise stated)

Symbol

V_IL

Parameter

Min

GND - 0.3

Typ

TBD

3.3

Max

0.8

VDD + 0.3

Unit

µA

Input low voltage

Input high voltage

Input low current

Input high current

V_IH

I_IL

I_IH

2.0

2.5

3.0

-35

0.4

I_XOL

I_XOH

V_OL

V_OH

I_DD

I_CC

VDD

t_ON

XOUT output low current (V_XOL@0.4V, VDD=3.3V)

XOUT output high current (V_XOH@2.5V, VDD=3.3V)

Output low voltage (VDD = 3.3V, I_OL=12mA)

Output high voltage (VDD = 3.3V, I_OH=12mA)

Static supply current*

Dynamic supply current ( VDD =3.3V )

Operating Voltage

Power-up time (first locked cycle after power-up)**

Output impedance

Ω

3.6

Z_OUT

* XIN and STBY Pins are pulled low

** VDD and XIN input are stable,

Multi-Output Custom Clock Generator

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Notice: The information in this document is subject to change without notice.

July 2006

rev 0.2

ASM3P4201A

AC Electrical Characteristics

Symbol

Parameter

Min

Typ

Max Unit

CLKIN

Input frequency

MHz

Output Frequency =20MHz (Pin 13)

Output Frequency = 50MHz

Output Frequency = 60MHz

Output Frequency = 65MHz

Output Frequency = 75MHz

f_d

Spread Percentage

±1.5

t_LH*

Output rise time (Measured from 0.8V to 2.0V)

Output fall time ( Measured from 2.0V to 0.8V)

Jitter (Cycle to cycle)

t_HL

t_JC

t_p

±250

±150

Jitter( Period)

t_D

Output duty cycle

*t_LHand t_HLare measured into a capacitive load of 30pF

Multi-Output Custom Clock Generator

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Notice: The information in this document is subject to change without notice.

July 2006

ASM3P4201A

rev 0.2

Package Information

20-lead Thin Shrunk Small Outline Package (4.40-MM Body) – JEDEC Standard

Dimensions

Millimeters

Symbol

Inches

Min

Max

0.043

0.0059

0.041

0.26

Min

…

0.05

0.80

6.40

0.50

Max

1.2

0.15

1.05

6.60

0.75

….

0.0020

0.031

0.252

0.020

0.030

0.252 BSC

6.40 BSC

0.169

0.004

0.007

0.004

0.177

….

0.012

0.008

4.30

0.09

0.19

0.09

4.50

…..

0.30

0.20

0.039 REF

0.026 BSC

0°

1.0 REF

0.65 BSC

0° 8°

8°

Multi-Output Custom Clock Generator

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Notice: The information in this document is subject to change without notice.

July 2006

rev 0.2

ASM3P4201A

Ordering Information

Part Number

Marking

Package

Temperature

Commercial

ASM3P4201AG-28-TT

ASM3P4201AG-28-TR

3P4201AG

20-Pin TSSOP, Tube, Green

20-Pin TSSOP, Tape and Reel, Green

Device Ordering Information

A S M 3 P 4 2 0 1 A G - 2 0 - T T

OR – TSOT23 -6,T/R

TT – TSSOP, TUBE

TR – TSSOP, T/R

VT – TVSOP, TUBE

VR – TVSOP, T/R

ST – SOIC, TUBE

AR – SSOP, T/R

SR – SOIC, T/R

QR – QFN, T/R

QT – QFN, TRAY

BT – BGA, TRAY

BR – BGA, T/R

UR – SOT-23, T/R

DR – QSOP, T/R

DT – QSOP, TUBE

AT – SSOP, TUBE

PIN COUNT

G = GREEN PACKAGE, LEAD FREE, and RoHS

PART NUMBER

X = Automotive

(-40C to +125C)

I = Industrial

P or n/c = Commercial

(0C to +70C)

(-40C to +85C)

1 – reserved

6 – power management

7 – power management

8 – power management

9 – Hi performance

0 - reserved

2 – Non PLL based

3 – EMI Reduction

4 – DDR support products

5 – STD Zero Delay Buffer

PulseCore Semiconductor Mixed Signal Product

Licensed under US patent Nos 5,488,627 and 5,631,920

Multi-Output Custom Clock Generator

6 of 7

Notice: The information in this document is subject to change without notice.

July 2006

rev 0.2

ASM3P4201A

PulseCore Semiconductor Corporation

1715 S. Bascom Ave Suite 200

Campbell, CA 95008

Part Numbers: ASM3P4201A

Document Version: 0.2

Tel: 408-879-9077

Fax: 408-879-9018

www.pulsecoresemi.com

Note: This product utilizes US Patent # 6,646,463 Impedance Emulator Patent issued to PulseCore Semiconductor, dated 11-11-2003

trademarks or registered trademarks of PulseCore. All other brand and product names may be the trademarks of their

respective companies. PulseCore reserves the right to make changes to this document and its products at any time without

notice. PulseCore assumes no responsibility for any errors that may appear in this document. The data contained herein

represents PulseCore's best data and/or estimates at the time of issuance. PulseCore reserves the right to change or correct

this data at any time, without notice. If the product described herein is under development, significant changes to these

specifications are possible. The information in this product data sheet is intended to be general descriptive information for

potential customers and users, and is not intended to operate as, or provide, any guarantee or warrantee to any user or

customer. PulseCore does not assume any responsibility or liability arising out of the application or use of any product

described herein, and disclaims any express or implied warranties related to the sale and/or use of PulseCore products

including liability or warranties related to fitness for a particular purpose, merchantability, or infringement of any intellectual

property rights, except as express agreed to in PulseCore's Terms and Conditions of Sale (which are available from

PulseCore). All sales of PulseCore products are made exclusively according to PulseCore's Terms and Conditions of Sale.

The purchase of products from PulseCore does not convey a license under any patent rights, copyrights; mask works rights,

trademarks, or any other intellectual property rights of PulseCore or third parties. PulseCore does not authorize its products

for use as critical components in life-supporting systems where a malfunction or failure may reasonably be expected to result

in significant injury to the user, and the inclusion of PulseCore products in such life-supporting systems implies that the

manufacturer assumes all risk of such use and agrees to indemnify PulseCore against all claims arising from such use

Multi-Output Custom Clock Generator

7 of 7

Notice: The information in this document is subject to change without notice.

ASM3P4201A [PULSECORE]

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