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HT66F4530 Datasheet(PDF) 149 Page - Holtek Semiconductor Inc |
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HT66F4530 Datasheet(HTML) 149 Page - Holtek Semiconductor Inc |
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149 / 224 page  Rev. 1.00 148 De�e��e� �1� �01� Rev. 1.00 149 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 Sta�t SCL SDA SCL SDA 1 0 ACK Slave Add�ess SRW Stop 11 0 10 10 10 01 01 00 I�C ti�e-out �ounte� sta�t I�C ti�e-out �ounte� �eset on SCL negative t�ansition I2C Time-out WhenanI2Ctime-outcounteroverflowoccurs,thecounterwillstopandtheSIMTOENbitwill beclearedtozeroandtheSIMTOFbitwillbesethightoindicatethatatime-outconditionhas occurred.Thetime-outconditionwillalsogenerateaninterruptwhichusestheI2Cinterruptvector. WhenanI2Ctime-outoccurs,theI2Cinternalcircuitrywillberesetandtheregisterswillbereset intothefollowingcondition: Registers After I2C Time-out SIMD� SIMA� SIMC0 No �hange SIMC1 Reset to POR �ondition I2C Registers after Time-out TheSIMTOFflagcanbeclearedbytheapplicationprogram.Thereare64time-outperiodswhich canbeselectedusingSIMTOSbitfieldintheSIMTOCregister.Thetime-outtimeisgivenbythe formula:((1~64)×32)/fSUB.Thisgivesatime-outperiodwhichrangesfromabout1msto64ms. • SIMTOC Register Bit 7 6 5 4 3 2 1 0 Na�e SIMTOEN SIMTOF SIMTOS5 SIMTOS4 SIMTOS3 SIMTOS� SIMTOS1 SIMTOS0 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 SIMTOEN:SIMI2CTime-outcontrol 0:Disable 1:Enable Bit6 SIMTOF:SIMI2CTime-outflag 0:Notime-outoccurred 1:Time-outoccurred Bit5~0 SIMTOS5~SIMTOS0:SIMI2CTime-outperiodselection I2Ctime-outclocksourceisfSUB/32. I2Ctime-outtimeisequalto(SIMTOS[5:0]+1)×(32/fSUB). |
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