User Guide

Table Of Contents

2013‐09‐27

NUR‐05WL2ImplementationGuidev1.1

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ThispinisusedformoduleUARTinputsignal.Logiclevelis3.3V.IfUARTisusedforcommunication

thepinshouldbeconnectedtotheHostMCUserialTXport.

Signalname:TX  Pinnumber(s):9

ThispinisusedformoduleUARToutputsignal.Logiclevelis3.3V.IfUARTisusedforcommunication

thepinshouldbeconnectedtotheHostMCUserialRXport.

Signalname:USB_DN  Pinnumber(s):10

ThispinisusedasUSB_D‐deviceport.ItisadvisedtouseexternalESDprotectioncomponentif

connectedtouseraccessibleUSBconnector.

Signalname:USB_DP  Pinnumber(s):11

ThispinisusedasUSB_D+deviceport.ItisadvisedtouseexternalESDprotectioncomponentif

connectedtouseraccessibleUSBconnector.

Signalname:USB_DETPinnumber(s):12

ThispinisonlyusedforUSBconnectiondetection.ItisadvisedtouseexternalESDprotection

componentifconnectedtouseraccessibleUSBconnector.Currentisnotdrawnfromthisinputpin.

Signalname:VCC_3V3_OUT Pinnumber(s):13

Thispinisconnectedtointernalpowerregulatoroutput.Thepinisusedforproductiontestingandit

shouldnotbeused.

Signalname:MODULE_EN Pinnumber(s):14

DrivingthispintohighwillenabletheNUR‐05WL2module.Itisinternallyconnectedtoonboard

voltageregulator’senableinput.Thetriggerlevelis1.2Vandthereadermodulewillwakeupin50ms.

IftheexternalpowerswitchisusedtotoggleONandOFF,thispincanbeconnecteddirectlyto

VCC_3V6_IN.

Signalname:NC Pinnumber(s):16,31,32

Thesepinsareinternallynotconnected.

Signalname:VCC_3V6_IN Pinnumber(s):17

ThispinisusedforpowersupplyinputforNUR‐05Wmodule.Itisrecommendedtouse200µF(low

ESR)100nFand100pFcapacitorneartheVCC_3V6_INinputpintomaintainstableoperatingvoltage

forthereadermodule.

Signalname:RFU  Pinnumber(s):1,18,19

Thesepinsarereservedforfutureuse.Donotconnectthesepins.

Signalname:GND/RF_DIF  Pinnumber(s):29

ThispinisinternallyconnectedtoGND.ItisreservedforfutureuseassecondaryRFoutput.

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