CYWUSB6935-48LFI

CYWUSB6935-48LFI Datasheet


CYWUSB6935

Part Datasheet
CYWUSB6935-48LFI CYWUSB6935-48LFI CYWUSB6935-48LFI (pdf)
Related Parts Information
CYWUSB6935-28SEI CYWUSB6935-28SEI CYWUSB6935-28SEI
PDF Datasheet Preview
CYWUSB6935

WirelessUSB LR 2.4-GHz DSSS Radio SoC
• 2.4-GHz radio transceiver
• Operates in the unlicensed Industrial, Scientific, and

Medical ISM band GHz
• receive sensitivity
• Up to 0dBm output power
• Range of up to 50 meters or more
• Data throughput of up to kbits/sec
• Highly integrated low cost, minimal number of external
components required
• Dual DSSS reconfigurable baseband correlators
• SPI microcontroller interface up to 2-MHz data rate
• 13-MHz input clock operation
• Low standby current < 1 µA
• Integrated 32-bit Manufacturing ID
• Operating voltage from 2.7V to 3.6V
• Operating temperature from to 85°C
• Offered in a small footprint 48 QFN or cost saving 28

SOIC

Functional Description

The CYWUSB6935 transceiver is a single-chip 2.4-GHz Direct Sequence Spread Spectrum DSSS Gaussian Frequency Shift Keying GFSK baseband modem radio that connects directly to a microcontroller. The CYWUSB6935 is offered in an industrial temperature range 48-pin QFN, 28-pin SOIC, and a commercial temperature range 48-pin QFN.
• Building/Home Automation Climate Control Lighting Control Smart Appliances On-Site Paging Systems Alarm and Security
• Industrial Control Inventory Management Factory Automation Data Acquisition
• Automatic Meter Reading AMR
• Transportation

Diagnostics Remote Keyless Entry
• Consumer / PC Locator Alarms Presenter Tools Remote Controls Toys

D IO V A L D IO

SS SCK M ISO MOSI

RESET PD

D igital

SERDES A

SERDES B

DSSS Baseband

DSSS Baseband

S ynthesizer

GFSK M odulator

GFSK Dem odulator

RFOUT R F IN

X13IN X13

X13OUT

Figure CYWUSB6935 Simplified Block Diagram
• 3901 North First Street
• San Jose, CA 95134
• 408-943-2600

CYWUSB6935

Applications Support

The CYWUSB6935 is supported by both the CY3632 WirelessUSB Development Kit and the CY3635 WirelessUSB N:1 Development Kit. The development kit provides all of the materials and documents needed to cut the cord on multipoint to point and point to point low bandwidth high node density applications including four small form-factor sensor boards and a hub board that connect to WirelessUSB LR RF module boards, comprehensive WirelessUSB protocol code examples and all of the associated schematics, gerber files and bill of materials. The WirelessUSB N:1 Development Kit is also supported by the WirelessUSB Listener Tool.

Functional Overview

The CYWUSB6935 provides a complete WirelessUSB LR SPI to antenna radio modem. The CYWUSB6935 is designed to implement wireless devices operating in the worldwide 2.4GHz Industrial, Scientific, and Medical ISM frequency band 2.400GHz - 2.4835GHz . It is intended for systems compliant with world-wide regulations covered by ETSI EN 301 489-1 V1.4.1, ETSI EN 300 328-1 V1.3.1 European Countries FCC CFR 47 Part 15 USA and Industry Canada and ARIB STD-T66 Japan .

The CYWUSB6935 contains a 2.4-GHz radio transceiver, a GFSK modem and a dual DSSS reconfigurable baseband. The radio and baseband are both code- and frequency-agile. Forty-nine spreading codes selected for optimal performance Gold codes are supported across 78 1-MHz channels yielding a theoretical spectral capacity of 3822 channels. The CYWUSB6935 supports a range of up to 50 meters or more.
2.4-GHz Radio

The receiver and transmitter are a single-conversion low-Intermediate Frequency low-IF architecture with fully integrated IF channel matched filters to achieve high performance in the presence of interference. An integrated Power Amplifier PA provides an output power control range of 30 dB in seven steps.

Both the receiver and transmitter integrated Voltage Controlled Oscillator VCO and synthesizer have the agility to cover the complete 2.4-GHz GFSK radio transmitter ISM band. The VCO loop filter is also integrated on-chip.

GFSK Modem

The transmitter uses a DSP-based vector modulator to convert the 1-MHz chips to an accurate GFSK carrier.

The receiver uses a fully integrated Frequency Modulator FM detector with automatic data slicer to demodulate the GFSK signal.
Ordering Information

Part Number CYWUSB6935-28SEI CYWUSB6935-48LFI CYWUSB6935-48LFC

Radio Transceiver

Package Name Package Type
28 SOIC 28-Lead Molded SOIC Exposed Paddle
48 QFN
48 Quad Flat Package No Leads
48 QFN
48 Quad Flat Package No Leads

Operating Range Industrial Commercial

Package Description

DIMENSIONS IN INCHES[MM] REFERENCE JEDEC MS-013 PACKAGE WEIGHT 0.8gms

MIN. MAX.

PIN 1 ID

PART # SE28.3 STANDARD PKG. SA28.3 LEAD FREE PKG.

E-PAD
15 TOP VIEW

TYP.

SEATING PLANE

BOTTOM VIEW
51-85184-*A

Figure 28-pin 300-Mil SOIC EPAD SE28.3 SOIC

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CYWUSB6935

The recommend dimension of the PCB pad size for the E-PAD underneath the SOIC is 190 mils x 225 mils width x length .

Figure 48-pin QFN 7 x 7 mm LF48
51-85152-*A

The recommended dimension of the PCB pad size for the EPAD underneath the QFN is 209 mils x 209 mils width x length .

This document is subject to change, and may be found to contain errors of omission or changes in parameters. For feedback or technical support regarding Cypress WirelessUSB products please contact Cypress at WirelessUSB and enCoRe are trademarks of Cypress Semiconductor. All product and company names mentioned in this document are the trademarks of their respective holders.

Page 31 of 32

Cypress Semiconductor Corporation, The information contained herein is subject to change without notice. Cypress Semiconductor Corporation assumes no responsibility for the use of any circuitry other than circuitry embodied in a Cypress Semiconductor product. Nor does it convey or imply any license under patent or other rights. Cypress Semiconductor does not authorize its products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress Semiconductor products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress Semiconductor against all charges.

CYWUSB6935

Document History Page

Document Title CYWUSB6935 WirelessUSB LR 2.4-GHz DSSS Radio SoC Document Number 38-16008

Description of Change
207428 See ECN TGE New Data Sheet

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Datasheet ID: CYWUSB6935-48LFI 508264