CY2077SI-XXX datasheet, PDF - EEWORLD Datasheet

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CY2077SI-XXX: DescriptionHigh-accuracy EPROM Programmable Single-PLL Clock Generator; File Size286KB，14 Pages; ManufacturerCypress Semiconductor

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CY2077SI-XXX Overview

High-accuracy EPROM Programmable Single-PLL Clock Generator

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CY2077

High-accuracy EPROM Programmable

Single-PLL Clock Generator

Features

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Benefits

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High-accuracy PLL with 12-bit multiplier and 10-bit

divider

EPROM programmability

3.3V or 5V operation

Operating frequency

❐

390 kHz–133 MHz at 5V

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390 kHz–100 MHz at 3.3V

Reference input from either a 10–30 MHz fundamental toned

crystal or a 1–75 MHz external clock

EPROM selectable TTL or CMOS duty cycle levels

Sixteen selectable post-divide options, using either PLL or

reference oscillator/external clock

Programmable PWR_DWN or OE pin, with asynchronous or

synchronous modes

Low jitter outputs typically

❐

80 ps at 3.3V/5V

Controlled rise and fall times and output slew rate

Available in both commercial and industrial temperature ranges

Factory programmable device options

Enables synthesis of highly accurate and stable output clock

frequencies with zero PPM

Enables quick turnaround of custom frequencies

Supports industry standard design platforms

Services most PC, networking, and consumer applications

Lowers cost of oscillator as PLL can be programmed to a high

frequency using either a low-frequency, low-cost crystal, or an

existing system clock

Duty cycle centered at 1.5V or V

DD

/2

Provides flexibility to service most TTL or CMOS applications

Provides flexibility in output configurations and testing

Enables low-power operation or output enable function and

flexibility for system applications, through selectable instanta-

neous or synchronous change in outputs

Suitable for most PC, consumer, and networking applications

Has lower EMI than oscillators

Suitable to fit most applications

Easy customization and fast turnaround

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Logic Block Diagram

PWR_DWN

or OE

Phase Detector

Crystal

Oscillator

Charge

Pump

Configuration

EPROM

XTALOUT

[1]

Q

10 bits

XTALIN

or

external clock

VCO

P

12 bits

HIGH

ACCURACY

PLL

MUX

/ 1, 2, 4, 8, 16, 32, 64, 128

Note

1. When using an external clock source, leave XTALOUT floating.

CLKOUT

Cypress Semiconductor Corporation

Document Number: 38-07210 Rev. *C

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198 Champion Court

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San Jose

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CA 95134-1709

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408-943-2600

Revised February 15, 2008

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