HT66F019 datasheet(129/175 Pages) HOLTEK

129 / 175 page

Rev. 1.00

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Rev. 1.00

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HT66F019

A/D Flash MCU with EEPROM

HT66F019

A/D Flash MCU with EEPROM

Sta�t

SIMTOF=1?

SET SIMTOEN

CLR SIMTOF

RETI

HAAS=1?

HTX=1?

SRW=1?

Read f�o� SIMD to

�elease SCL Line

RETI

RXAK=1?

W�ite data to SIMD to

�elease SCL Line

CLR HTX

CLR TXAK

Du��y �ead f�o� SIMD

to �elease SCL Line

RETI

SET HTX

W�ite data to SIMD to

�elease SCL Line

RETI

CLR HTX

CLR TXAK

Du��y �ead f�o� SIMD

to �elease SCL Line

RETI

Yes

I2C Bus ISR Flow Chart

I2C Time-out Control

InordertoreducetheI2Clockupproblemduetoreceptionoferroneousclocksources,atime-out

functionisprovided.IftheclocksourceconnectedtotheI2Cbusisnotreceivedforawhile,then

theI2Ccircuitryandregisterswillberesetafteracertaintime-outperiod.Thetime-outcounter

startstocountonanI2Cbus"START"&"addressmatch"condition,andisclearedbyanSCLfalling

edge.BeforethenextSCLfallingedgearrives,ifthetimeelapsedisgreaterthanthetime-outperiod

specifiedbytheSIMTOCregister,thenatime-outconditionwilloccur.Thetime-outfunctionwill

stopwhenanI2C"STOP"conditionoccurs.

HT66F019 Datasheet(PDF) 129 Page - Holtek Semiconductor Inc

HT66F019 Datasheet(HTML) 129 Page - Holtek Semiconductor Inc

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