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HT66F4530 Datasheet(PDF) 141 Page - Holtek Semiconductor Inc |
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HT66F4530 Datasheet(HTML) 141 Page - Holtek Semiconductor Inc |
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141 / 224 page  Rev. 1.00 140 De�e��e� �1� �01� Rev. 1.00 141 De�e��e� �1� �01� HT66F4530/HT66F4540/HT66F4550 A/D Flash MCU with Dual Operational Amplifiers HT66F4530/HT66F4540/HT66F4550 A/D Flash MCU with Dual Operational Amplifiers START signal f�o� Maste� Send slave add�ess and R/W �it f�o� Maste� A�knowledge f�o� slave Send data �yte f�o� Maste� A�knowledge f�o� slave STOP signal f�o� Maste� TheSIMDEB1andSIMDEB0bitsdeterminethedebouncetimeoftheI2Cinterface.Thisuses theinternalclocktoineffectaddadebouncetimetotheexternalclocktoreducethepossibility ofglitchesontheclocklinecausingerroneousoperation.Thedebouncetime,ifselected,canbe chosentobeeither2or4systemclocks.ToachievetherequiredI2Cdatatransferspeed,there existsarelationshipbetweenthesystemclock,fSYS,andtheI2Cdebouncetime.ForeithertheI2C StandardorFastmodeoperation,usersmusttakecareoftheselectedsystemclockfrequencyand theconfigureddebouncetimetomatchthecriterionshowninthefollowingtable. I2C Debounce Time Selection I2C Standard Mode (100kHz) I2C Fast Mode (400kHz) No De�oun�e fSYS > � MHz fSYS > 5 MHz � syste� �lo�k de�oun�e fSYS > 4 MHz fSYS > 10 MHz 4 syste� �lo�k de�oun�e fSYS > 8 MHz fSYS > �0 MHz I2C Minimum fSYS Frequency I2C Registers TherearethreecontrolregistersassociatedwiththeI2Cbus,SIMC0,SIMC1andSIMTOC,one addressregisterSIMAandonedataregister,SIMD. Register Name Bit 7 6 5 4 3 2 1 0 SIMC0 SIM� SIM1 SIM0 — SIMDEB1 SIMDEB0 SIMEN SIMICF SIMC1 HCF HAAS HBB HTX TXAK SRW IAMWU RXAK SIMD D7 D� D5 D4 D3 D� D1 D0 SIMA A� A5 A4 A3 A� A1 A0 — SIMTOC SIMTOEN SIMTOF SIMTOS5 SIMTOS4 SIMTOS3 SIMTOS� SIMTOS1 SIMTOS0 I2C Registers List I2C Data Register TheSIMDregisterisusedtostorethedatabeingtransmittedandreceived.Thesameregisterisused byboththeSPIandI2Cfunctions.BeforethesedeviceswritedatatotheI2Cbus,theactualdatato betransmittedmustbeplacedintheSIMDregister.AfterthedataisreceivedfromtheI2Cbus,these devicescanreaditfromtheSIMDregister.AnytransmissionorreceptionofdatafromtheI2Cbus mustbemadeviatheSIMDregister. |
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