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HT45F65 Datasheet(PDF) 170 Page - Holtek Semiconductor Inc

Part # HT45F65
Description  Glucose Meter 8-Bit Flash MCU
PDF  231 Pages
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Manufacturer  HOLTEK [Holtek Semiconductor Inc]
Direct Link  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT45F65 Datasheet(HTML) 170 Page - Holtek Semiconductor Inc

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Rev. 1.60
170
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Rev. 1.60
171
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HT45F65/HT45F66/HT45F67
Glucose Meter 8-Bit Flash MCU
• SPI1D Register
Bit
7
6
5
4
3
2
1
0
�a�e
D7
D6
D�
D�
D3
D�
D1
D0
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
SPI1 Communication
AftertheSPI1interfaceisenabledbysettingtheSPI1ENbithigh,thenintheMasterMode,when
dataiswrittentotheSPI1Dregister,transmission/receptionwillbeginsimultaneously.Whenthedata
transferiscomplete,theS1TRFflagwillbesetautomatically,butmustbeclearedusingtheapplication
program.IntheSlaveMode,whentheclocksignalfromthemasterhasbeenreceived,anydatainthe
SPI1DregisterwillbetransmittedandanydataontheSDI1pinwillbeshiftedintotheSPI1Dregister.
ThemastershouldoutputaSCS1Bnsignaltoenabletheslavedevicebeforeaclocksignalis
provided.Theslavedatatobetransferredshouldbewellpreparedattheappropriatemoment
relativetotheSCS1BnsignaldependingupontheconfigurationsoftheS1CKPOLbitandS1CKEG
bit.TheaccompanyingtimingdiagramshowstherelationshipbetweentheslavedataandSCSsignal
forvariousconfigurationsoftheS1CKPOLandS1CKEGbits.
TheSPI1willcontinuetofunctionevenintheIDLEMode.
Peripheral Clock Output
ThePeripheralClockOutputallowsthedevicetosupplyexternalhardwarewithaclocksignal
synchronisedtothemicrocontrollerclock.
Peripheral Clock Operation
Astheperipheralclockoutputpin,PCK,issharedwithI/Oline,therequiredpinfunctionischosen
viaPCKENintheSIMC0register.ThePeripheralClockfunctioniscontrolledusingtheSIMC0
register.TheclocksourceforthePeripheralClockOutputcanoriginatefromeithertheTM0CCRP
matchfrequency/2oradividedratiooftheinternalfSYSclock.ThePCKENbitintheSIMC0register
istheoverallon/offcontrol,settingPCKENbitto"1"enablesthePeripheralClock,andsetting
PCKENbitto"0"disablesit.Therequireddivisionratioofthesystemclockisselectedusingthe
PCKP1andPCKP0bitsinthesameregister.IfthedeviceenterstheSLEEPMode,thiswilldisable
thePeripheralClockoutput.
SIMC0 Register
Bit
7
6
5
4
3
2
1
0
�a�e
SIM�
SIM1
SIM0
PCKE�
PCKP1
PCKP0
SIME�
—
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
—
POR
1
1
1
0
0
0
0
—
Bit7~5
SIM2~SIM0:SIMOperatingModeControl
000:SPImastermode;SPIclockisfSYS/4
001:SPImastermode;SPIclockisfSYS/16
010:SPImastermode;SPIclockisfSYS/64
011:SPImastermode;SPIclockisfSUB
100:SPImastermode;SPIclockisTM0CCRPmatchfrequency/2
101:SPIslavemode
110:I2Cslavemode
111:Unusedmode
ThesebitssetuptheoveralloperatingmodeoftheSIMfunction.Aswellasselecting
iftheI2CorSPIfunction,theyareusedtocontroltheSPIMaster/Slaveselectionand
theSPIMasterclockfrequency.TheSPIclockisafunctionofthesystemclockbut
canalsobechosentobesourcedfromtheTM0.IftheSPISlaveModeisselectedthen
theclockwillbesuppliedbyanexternalMasterdevice.



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