HT45F75 datasheet(113/190 Pages) HOLTEK

113 / 190 page

Rev. 1.10

11�

De�e��e� 1�� 01�

Rev. 1.10

113

De�e��e� 1�� 01�

HT45F75

Body Fat Scale Flash MCU

HT45F75

Body Fat Scale Flash MCU

Da ta B us

SD I Pi n

SD O Pi n

SI MD

Tx /R x Sh i ft R egi st er

Bu sy

St at us

TR F Fl ag

WC OL F la g

Cl oc k

Ed ge /P ol ar it y

Co nt ro l

Cl oc k

So ur ce S el ec t

f SY S

f SU B

TM 0 CCRP m at ch fr equen cy/ 2

SC K Pi n

SC S Pi n

CS EN b it

CK EN b it

C KPO LB b it

SPI Block Diagram

SPI Interface Operation

TheSPIinterfaceisafullduplexsynchronousserialdatalink.Itisafourlineinterfacewithpin

namesSDI,SDO,SCKandSCS.PinsSDIandSDOaretheSerialDataInputandSerialDataOutput

lines,SCKistheSerialClocklineandSCSistheSlaveSelectline.AstheSPIinterfacepinsarepin-

sharedwithnormalI/OpinsandwiththeI2Cfunctionpins,theSPIinterfacemustfirstbeenabled

bysettingthecorrectbitsintheSIMC0andSIMC2registers.TheSPIcanbedisabledorenabled

usingtheSIMENbitintheSIMC0register.CommunicationbetweendevicesconnectedtotheSPI

interfaceiscarriedoutinaslave/mastermodewithalldatatransferinitiationsbeingimplemented

bythemaster.TheMasteralsocontrolstheclocksignal.AsthedeviceonlycontainsasingleSCS

pinonlyoneslavedevicecanbeutilized.TheSCSpiniscontrolledbysoftware,setCSENbitto"1"

toenableSCSpinfunction,setCSENbitto"0"theSCSpinwillbefloatingstate.

SP I M ast er

SP I S l ave

SC K

SD O

SD I

SC S

SC K

SD I

SD O

SC S

SPI Master/Slave Connection

TheSPIfunctioninthisdeviceoffersthefollowingfeatures:

• Fullduplexsynchronousdatatransfer

• BothMasterandSlavemodes

• LSBfirstorMSBfirstdatatransmissionmodes

• Transmissioncompleteflag

• Risingorfallingactiveclockedge

ThestatusoftheSPIinterfacepinsisdeterminedbyanumberoffactorssuchaswhetherthedevice

isinthemasterorslavemodeandupontheconditionofcertaincontrolbitssuchasCSENand

SIMEN.

HT45F75 데이터시트(PDF) 113 Page - Holtek Semiconductor Inc

HT45F75 데이터시트(HTML) 113 Page - Holtek Semiconductor Inc

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

데이터시트 다운로드

링크 URL