HT56R666 View Datasheet(PDF) - Holtek Semiconductor
Part Name
Description
MFG CO.
'HT56R666' PDF : 104 Pages View PDF
S ta rt
SCL
S la v e A d d r e s s
HT56R66/HT56R666
SRW
ACK
SDA
1
0
1
1
0
1
0
1
0
D a ta
ACK
S to p
SCL
1
0
0
1
0
1
0
0
SDA
S = S ta r t ( 1 b it)
S A = S la v e A d d r e s s ( 7 b its )
S R = S R W b it ( 1 b it)
M = S la v e d e v ic e s e n d a c k n o w le d g e b it ( 1 b it)
D = D a ta ( 8 b its )
A = A C K ( R X A K b it fo r tr a n s m itte r , T X A K b it fo r r e c e iv e r 1 b it)
P = S to p ( 1 b it)
S SA SR M D A D A
S SA SR M D A D A
P
I2C Communication Timing Diagram
S ta rt
No
R e a d fro m
S IM D R
No
H TX=1
Y es
?
H AAS=1
?
Y es
Y es
SET H TX
SR W =1
?
No
C LR H TX
C LR TX A K
R ETI
C LR H TX
C LR TX A K
Y es
R XAK=1
?
No
W r ite to
S IM D R
W r ite to
S IM D R
R ETI
D um m y R ead
F ro m S IM D R
R ETI
D um m y R ead
fro m S IM D R
R ETI
R ETI
I2C Bus ISR Flow Chart
Rev. 1.40
63
May 11, 2012
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