TWR-S08MM128-KIT Datasheet TWR-S08MM128-KIT | P4-P6

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 TWR‐MC9S08MM128UserManual Page4of13

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2 ReferenceDocuments

Thedocumentslistedbelowareavailableonline.Refertohttp://www.freescale.com/towerforthe

latestrevisionofallTowerSystemdocumentation.

• TWR‐S08MM128Schematics

• TWR‐S08MM128QuickStartGuide

• TWR‐S08MM128‐KITLabTutorial

• MC9S08MM128ReferenceManual

• MC9S08MM128DataSheet

• AN3561,USBBootloaderfortheMC9S08JM60

3 HardwareFeatures

ThissectionprovidesmoredetailsaboutthefeaturesandfunctionalityoftheTWR‐S08MM128.

3.1 Clocking

TwocrystalsareprovidedontheboardforclockingtheMC9S08MM128device:

1. A16MHzcrystalconnectedtoXTAL2andEXTAL2forsystemclocking

2. A32.768kHzcrystalconnectedtoXTAL1andEXTAL1forTODusage

3.2 SystemPower

TheTWR‐S08MM128canbepoweredbytheOpenSourceBDM(OSBDM)circuitviatheMini‐BUSB

connectorwhenstand‐alone.WhenassembledwiththeTowerSystemandtheTWR‐SERisconfigured

torunUSBdevicemode(J16pin3and4connected),theMini‐BUSBconnectorisnolongerusedasa

powersourceandonlyusedforOSBDMdebuggingpurposes.Inthiscase,thepowerwillbesupplied

fromtheMini‐BUSBfromtheTWR‐SER.PleaseplugintheMini‐BUSBconnectorfromTWE‐SERbefore

pluggingintheMini‐BUSBconnectorfromTWR‐S08MM128.

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AstandardUSBAmaletoMini‐Bmalecable(provided)canbeusedtosupplypowerfromaUSBhost

orpoweredUSBhub.Optionally,anACtoDCadapterwithaUSBAfemalereceptacle(notprovided)

canbeusedasthepowersource.

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Ajumper,J11,canbeusedtoisolatethe3.3Vsupplyfromthemicrocontroller.Thisconnectioncanbe

usedtomeasurethepowerusageoftheMC9S08MM128microcontroller.

3.3 DebugInterface

Anon‐board,MC9S08JM60basedOSBDMcircuitprovidesadebuginterfacetotheMC9S08MM128.A

standardUSBAmaletoMini‐Bmalecable(provided)canbeusedfordebuggingviatheUSBconnector,

J17.RefertoSection6forinformationonothermodesofoperationoftheOSBDM.

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 TWR‐MC9S08MM128UserManual Page5of13

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3.4 RS232Interface

AnRS232transceiverontheTWR‐S08MM128connectstoastandard2x5pinheader(refertoFigure

2).SelectionjumpersJ15andJ16allowMC9S08MM128SCI2signalstoberoutedtoeithertheRS232

transceiverortheOSBDMcircuit.RefertoFigure5formoredetails.

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Alternatively,whenassembledasaTowerSystem,theMC9S08MM128SCI1TXandRXareroutedto

theSER‐TWR.IftheSER‐TWRjumpersareconfiguredtoruninRS‐232mode,theSCI1TXandtheRX

signalcanbecommunicatedviatheRS232connectorfromtheTWR‐SER.PleaserefertotheTWR‐SER

usermanual(TWRSERUM)fromwww.freescale.com/towerformoredetail.

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MC9S08MM128

Signal Pin

MC9S08MM128

Signal

NotConnected 1 2 NotConnected

TX2 3 4 NotConnected

RX2 5 6 NotConnected

NotConnected 7 8 NotConnected

GND 9 10 3.3V

Figure2. RS2322x5PinHeaderConnections

3.5 InfraredPort

The TWR‐S08MM128 implements an infrared transmit and receive port. The transmit circuit is

implementedwithaninfrareddiodeandtheusercanchoosetodrivethediodeeitherwithIROorSCI

TX.Thereceiverisimplementedbyaninfraredtransistorandtheusercanchoosetoinputthissignal

totheSCIRXortheACMPinput.JumpersJ9,J25andJ26areusedforroutingtheconnections,referto

Section 4 to set the jumpers. Please refer to application note AN4116, searchable from

www.freescale.com

3.6 MedicalConnector

TheTWR‐S08MM128featuresa2x10expansionconnectorJ27(refertoFigure3)toMED‐EKGfor

routingthemedicalenginesignalstoexternalmedicalboardsoitcanusetheOPAMP,TRIAMP,ADC

andDAConMC9S08MM128toimplementtherequirementsignalconditioningformedical

applications.

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WhentheDSCMC56F8006fromtheMED‐EKGisenabled,MC9S08MM128canchoosetoreadthe

conditionedEKGresultsoutputfromtheDSCviaI2Ctransmission(pin3andpin4).ToenableI2C

communication,youmustassembletheMEG‐EKGwiththeTowerSystembecausetheTWR‐SERhas

thepulledupresistorscircuitrequiredforI2Ctransmission.

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InFigure3,theboldtexthighlightsthefunctionsthatareusedtoimplementtheMED‐EKG

demonstration.FordetailabouttheMED‐EKG,pleaserefertotheMED‐EKGusermanual,MED‐EKGlab

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 TWR‐MC9S08MM128UserManual Page6of13

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andschematicincludedintheTWR‐S08MM128‐KITorTWR‐MCF51MM‐KIT.Allofthesearealso

availableonFreescale.com/tower

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TWR‐S08MM128Signal Pin TWR‐S08MM128Signal

MOSFETQ6(pin3)‐Power(3.3V) 1 2 Ground(GND)

PTD4/SDA/TPM1CH2 3 4 PTD5/SCL/TPM1CH3

DADP0 5 6 DADM0

PTC4/KBI1P7/CMPP0/ADP8 7 8 DACO_E

OUT1 9 10 OUT2

INP1‐ 11 12 INP2‐

PTA4/INP1+ 13 14PTA7/INP2+

VINP1 15 16 VINP2

VINN1/DADM2 17 18VINN2/DADM3

TRIOUT1/DADP2 19 20TRIOUT2/DADP3

Figure3. MedicalConnector2x10PinHeaderConnections

3.7 ElevatorConnections

TheTWR‐S08MM128featurestwoexpansioncard‐edgeconnectorsthatinterfacetoelevatorboardsin

aTowerSystem:thePrimaryandSecondaryElevatorconnectors.ThePrimaryElevatorconnector,

comprisedofsidesAandB,isutilizedbytheTWR‐S08MM128,whiletheSecondaryElevatorconnector

onlymakesconnectionstoground(GND).Figure4providesthepinoutforthePrimaryElevator

connector.An“X”inthe“Used”columnindicatesthatthereisaconnectionfromtheTWR‐S08MM128

tothatpinontheelevatorconnector.An“X”inthe“Jmp”columnindicatesthatajumperisavailable

thatcanconfigureorisolatetheconnectionfromtheelevatorconnector.

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Figure4. TWR‐S08MM128PrimaryElevatorConnectorPinout

TWR‐S08MM128PrimaryConnector

Pin Name Usage Used Jmp Pin Name Usage Used Jmp

B1 5V 5.0VPower XA1 5V 5.0VPower X 

B2 GND Ground XA2 GND Ground X 

B3 3.3V 3.3VPower XA3 3.3V 3.3VPower X 

B4 ELE_PS_SENSE ElevatorPowerSense XA4 3.3V 3.3VPower X 

B5 GND Ground XA5 GND Ground X 

B6 GND Ground XA6 GND Ground X 

B7

SPI1_CLK

PTG0/SPSCK1 X



A7

SCL0

PTD5/SCL/TPM1CH3 X



B8

SPI1_CS1

  A8

SDA0

PTD4/SDA/TPM1CH2 X



B9

SPI1_CS0

PTA0/SS1_b XA9 GPIO9/OPEN PTE4/CMPP3/TPMCLK/IRQ X



B10

SPI1_MOSI

PTF6/MOSI1 X



A10 GPIO8/OPEN PTC7/KBI2P2/CLKOUT/ADP11 X



B11

SPI1_MISO

PTF7/MISO1 X



A11 GPIO7/OPEN

PTC6/KBI2P1/PRACMPO/ADP1

0 X

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         

P1-P3 P4-P6 P7-P9 P10-P12 P13-P13

TWR-S08MM128-KIT

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TWR-S08MM128-KIT