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HT45F65 Datasheet(PDF) 157 Page - Holtek Semiconductor Inc |
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HT45F65 Datasheet(HTML) 157 Page - Holtek Semiconductor Inc |
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157 / 231 page  Rev. 1.60 1�6 �ove��e� ��� �01� Rev. 1.60 1�7 �ove��e� ��� �01� HT45F65/HT45F66/HT45F67 Glucose Meter 8-Bit Flash MCU Bit0 SIMCF:SIMtransferincompleteflagforSPIinterface 0:NoSPIincompletetransferoccurs 1:SPIincompletetransferoccurred TheSIMCFbitisonlyusedfortheSPIslavedevicetoindicatewhethertheSPI transferiscompleteornot.WhentheSPItransferisinprogressandtheSCSpinis setto“1”,theSPItransferwillbestoppedandtheSIMCFflagwillbesetto1by hareware. • SIMC2 Register Bit 7 6 5 4 3 2 1 0 �a�e D7 D6 CKPOLB CKEG MLS CSE� WCOL TRF R/W R/W R/W R/W R/W R/W R/W R/W R/W POR 0 0 0 0 0 0 0 0 Bit7~6 D7, D6:Undefinedbit Thisbitcanbereadorwrittenbyusersoftwareprogram. Bit5 CKPOLB:Determinesthebaseconditionoftheclockline 0:theSCKlinewillbehighwhentheclockisinactive 1:theSCKlinewillbelowwhentheclockisinactive TheCKPOLBbitdeterminesthebaseconditionoftheclockline,ifthebitishigh, thentheSCKlinewillbelowwhentheclockisinactive.WhentheCKPOLBbitis low,thentheSCKlinewillbehighwhentheclockisinactive. Bit4 CKEG:DeterminesSPISCKactiveclockedgetype CKPOLB=0 0:SCKishighbaselevelanddatacaptureatSCKrisingedge 1:SCKishighbaselevelanddatacaptureatSCKfallingedge CKPOLB=1 0:SCKislowbaselevelanddatacaptureatSCKfallingedge 1:SCKislowbaselevelanddatacaptureatSCKrisingedge TheCKEGandCKPOLBbitsareusedtosetupthewaythattheclocksignaloutputs andinputsdataontheSPIbus.Thesetwobitsmustbeconfiguredbeforedatatransfer isexecutedotherwiseanerroneousclockedgemaybegenerated.TheCKPOLBbit determinesthebaseconditionoftheclockline,ifthebitishigh,thentheSCKline willbelowwhentheclockisinactive.WhentheCKPOLBbitislow,thentheSCK linewillbehighwhentheclockisinactive.TheCKEGbitdeterminesactiveclock edgetypewhichdependsupontheconditionofCKPOLBbit. Bit3 MLS:SPIDatashiftorder 0:LSB 1:MSB Thisisthedatashiftselectbitandisusedtoselecthowthedataistransferred,either MSBorLSBfirst.SettingthebithighwillselectMSBfirstandlowforLSBfirst. Bit2 CSEN:SPISCSpinControl 0:Disable 1:Enable TheCSENbitisusedasanenable/disablefortheSCSpin.Ifthisbitislow,thenthe SCSpinwillbedisabledandplacedintoafloatingcondition.IfthebitishightheSCS pinwillbeenabledandusedasaselectpin. NotethatusingtheCSENbitcanbedisabledorenabledviaconfigurationoption. Bit1 WCOL:SPIWriteCollisionflag 0:Nocollision 1:Collision TheWCOLflagisusedtodetectifadatacollisionhasoccurred.Ifthisbitishighit meansthatdatahasbeenattemptedtobewrittentotheSIMDregisterduringadata transferoperation.Thiswritingoperationwillbeignoredifdataisbeingtransferred. Thebitcanbeclearedbytheapplicationprogram.NotethatusingtheWCOLbitcan bedisabledorenabledviaconfigurationoption. |
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