HT45F65 datasheet(166/231 Pages) HOLTEK

166 / 231 page

Rev. 1.60

166

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Rev. 1.60

167

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HT45F65/HT45F66/HT45F67

Glucose Meter 8-Bit Flash MCU

Da ta

01010

S= St ar t ( 1 bi t)

SA =S la ve A dd re ss (7 b it s)

SR =S RW b i t ( 1 bi t)

M= Sl av e dev ic e s end a ck now l edge bi t (1 b it )

D= Da ta ( 8 bi ts )

A= AC K ( RX AK b it f or tr ans mi tt er , T XAK b it fo r re ce iv er 1 b it )

P= St op (1 b it )

SC L

St ar t

SD A

SR WA CK

AC K

St op

SC L

SD A

Sl av e Ad dr es s

SA SR

I2C Communication Timing Diagram

Note:*Whenaslaveaddressismatched,thedevicemustbeplacedineitherthetransmitmode

andthenwritedatatotheSIMDregister,orinthereceivemodewhereitmustimplementa

dummyreadfromtheSIMDregistertoreleasetheSCLline.

St ar t

HA AS= 1

HT X= 1

SR W= 1

Ye s

R XAK =1

Ye s

R ead fr om

SI MD t o re l eas e

SC L li ne

RE TI

Ye s

Du mmy r ead fr om

SI MD to r el eas e

SC L Li ne

RE TI

Wr it e dat a to S IM D

re l eas e SC L Li ne

SE T HT X

Wr it e dat a to S IM D

to r el eas e SC L Li ne

RE TI

CL R HT X

CL R T XAK

Du mm y r ead fr om

SI MD to r el eas e

SC L Li ne

CL R HT X

CL R TX AK

RE TI

I2C Bus ISR Flow Chart

HT45F65 Datasheet(PDF) 166 Page - Holtek Semiconductor Inc

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