CY3695 datasheet(1/15 Pages) CYPRESS

Part #	CY3695

Description	Programmable Spread Spectrum Clock Generator for EMI Reduction

Download	15 Pages

Scroll/Zoom	100%

Manufacturer	CYPRESS [Cypress Semiconductor]

Direct Link	http://www.cypress.com

Logo

1 / 15 page

CY25200

Programmable Spread Spectrum

Clock Generator for EMI Reduction

Cypress Semiconductor Corporation

•

198 Champion Court

•

San Jose

, CA 95134-1709

•

408-943-2600

Document Number: 38-07633 Rev. *H

Revised December 7, 2010

Programmable Spread Spectrum Clock Generator for EMI Reduction

Features

■ Wide Operating Output (SSCLK) Frequency Range

❐ 3 to 200 MHz

■ Programmable Spread Spectrum with Nominal 31.5 kHz

modulation Frequency

■ Center Spread: ±0.25% to ±2.5%

■ Down Spread: –0.5% to –5.0%

■ Input Frequency Range

❐ External crystal: 8 to 30 MHz fundamental crystals

❐ External reference: 8 to 166 MHz clock

■ Integrated Phase-Locked Loop (PLL)

■ Programmable Crystal Load Capacitor Tuning Array

■ Low Cycle-to-Cycle Jitter

■ 3.3 V Operation with 2.5 V Output Clock Drive Option

■ Spread Spectrum On and Off Function

■ Power Down or Output Enable Function

■ Output Frequency Select Option

■ Field-Programmable

■ Package: 16 Pin TSSOP

Description

The CY25200 is a programmable clock generator with spread

spectrum capability. Spread spectrum modulates the output

clock frequency over a small range, spreading the energy and

reducing the energy peak. This is a powerful technique to reduce

EMI in a variety of applications.

It uses either an external reference clock or a crystal for an input.

It also uses a PLL to generate a spread spectrum output clock

that can be a different frequency than the input. Up to six output

clocks are available and up to two of them can be REFCLKs

(copies of the input clock, without spread).

The CY25200 is highly configurable. Programmable variables

include the input and output frequencies, spread percentage,

center spread or down spread, and control pin functions. The

oscillator pin capacitance can also be programmed to match the

load capacitance requirement (CL)of the crystal, eliminating the

need for external capacitors.

Available features include Output Enable, Power Down, Spread

On/Off, Frequency Select, and the option to power some output

clocks at 2.5 V.

Cypress’ web-based CyberClocks Online software is used to

configure the device. Programmability enables fast prototyping,

which is particularly useful when doing EMC testing and

determining the optimal spread settings.

Divider

PLL

SSCLK3

Q

P

VCO



SSCLK2

SSCLK4

SSCLK5/REFOUT/CP2

SSCLK6/REFOUT/CP3

Bank 1

Divider

Bank 2

Output

Select

SSCLK1

Matrix

VDDL

AVSS

AVDD

VSS

VSSL

VDD

CP0

CP1

2

35

13

11

6

410

7

8

9

12

14

15

XIN/CLKIN

OSC.

XOUT

CXIN

1

CXOUT

16

Logic Block Diagram

[+] Feedback

Similar Part No. - CY3695

Manufacturer	Part #	Datasheet	Description
Cypress Semiconductor	CY3695	234Kb / 6P	PTG Programming Kit
	CY3695	364Kb / 12P	Programmable Spread Spectrum Clock Generator for EMI Reduction
	CY3695	380Kb / 11P	Programmable Spread Spectrum Clock Generator for EMI Reduction
	CY3695	315Kb / 11P	One-PLL General-Purpose Flash-Programmable Clock Generator
	CY3695	443Kb / 18P	One-PLL General-Purpose Flash-Programmable and I2C Programmable Clock Generator

More results

Similar Description - CY3695

Manufacturer	Part #	Datasheet	Description
Cypress Semiconductor	CY25200	280Kb / 11P	Programmable Spread Spectrum Clock Generator for EMI Reduction
	CY25000	271Kb / 10P	Programmable Spread Spectrum Clock Generator for EMI Reduction
	CY25200	364Kb / 12P	Programmable Spread Spectrum Clock Generator for EMI Reduction
	CY25200	380Kb / 11P	Programmable Spread Spectrum Clock Generator for EMI Reduction
	CY25100	279Kb / 11P	Field- and Factory-Programmable Spread Spectrum Clock Generator for EMI Reduction
	CY25100	372Kb / 13P	Field and Factory-Programmable Spread Spectrum Clock Generator for EMI Reduction
SpectraLinear Inc	SL15316	282Kb / 12P	Programmable Spread Spectrum Clock Generator (SSCG)
	SL15101	194Kb / 16P	Programmable Spread Spectrum Clock Generator (SSCG)
	SL15300	372Kb / 16P	Programmable Spread Spectrum Clock Generator (SSCG)
Fujitsu Component Limit...	MB88151A	342Kb / 22P	Spread Spectrum Clock Generator

More results

CY3695 Datasheet(PDF) 1 Page - Cypress Semiconductor

CY3695 Datasheet(HTML) 1 Page - Cypress Semiconductor

Similar Part No. - CY3695

Similar Description - CY3695

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Datasheet Download

Link URL