HT56R656 datasheet(65/108 Pages) HOLTEK

65 / 108 page

HT56R62/HT56R65

HT56R642/HT56R644/HT56R654/HT56R656

Rev. 1.00

July 20, 2009

S t a r t

H A A S = 1

H T X = 1

S R W = 1

Y e s

N o

Y e s

N o

R X A K = 1

Y e s

N o

R e a d f r o m

S I M D R

R E T I

Y e s

D u m m y R e a d

f r o m S I M D R

R E T I

W r i t e t o

S I M D R

S E T H T X

W r i t e t o

S I M D R

D u m m y R e a d

F r o m S I M D R

C L R H T X

C L R T X A K

R E T I

C L R H T X

C L R T X A K

2C Bus ISR Flow Chart

D a t a

S = S t a r t ( 1 b i t )

S A = S l a v e A d d r e s s ( 7 b i t s )

S R = S R W b i t ( 1 b i t )

M = S l a v e d e v i c e s e n d a c k n o w l e d g e b i t ( 1 b i t )

D = D a t a ( 8 b i t s )

A = A C K ( R X A K b i t f o r t r a n s m i t t e r , T X A K b i t f o r r e c e i v e r 1 b i t )

P = S t o p ( 1 b i t )

S C L

S t a r t

S D A

S R W

A C K

S t o p

S C L

S D A

S l a v e A d d r e s s

S A

S R

S A

S R

2C Communication Timing Diagram

HT56R656 数据表(PDF) 65 Page - Holtek Semiconductor Inc

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HT56R656 数据表(PDF) 65 Page - Holtek Semiconductor Inc

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