Microchip Technology GPIODM-KPLCD Data Sheet
PIC18F2455/2550/4455/4550
DS39632E-page 220
© 2009 Microchip Technology Inc.
FIGURE 19-13:
I
2
C™ SLAVE MODE TIMING (TRANSMISSION, 10-BIT ADDRESS)
SDA
SCL
SSP
IF
BF (
S
S
PST
A
T
<
0>)
S
1
2
3
4
56
7
8
9
1
2
3
4
5
6
7
89
1
2
3
4
5
7
89
P
11
1
1
0
A
9
A
8
A
7
A
6
A5
A4
A
3
A
2
A1
A0
11
1
1
0
A8
R/W
=
1
AC
K
AC
K
R/W
=
0
ACK
R
eceive F
ir
st B
yte of
A
d
dr
ess
Cle
a
re
d
in
so
ftwa
re
B
u
s m
aster
term
inates
tran
sfer
A9
6
(P
IR
1<
3>
)
R
e
ce
iv
e S
econd B
yte
of A
ddre
ss
C
lear
ed by
hard
w
a
re w
hen
S
S
P
A
D
D
is
u
pdate
d
w
ith l
o
w
byte
of ad
dress
UA (
S
S
PST
A
T
<1
>)
Clo
ck is h
e
ld
lo
w u
ntil
up
date o
f S
S
P
A
D
D
ha
s
ta
ken
pl
ace
UA
is se
t indicatin
g
that
the S
S
P
A
D
D
need
s to be
upda
ted
UA
is set
indicating
that
S
S
P
A
D
D
need
s to be
up
d
a
te
d
Cle
ar
e
d
b
y h
a
rd
wa
re
wh
e
n
S
S
P
A
D
D
is
upda
ted w
ith h
igh
by
te
o
f ad
d
res
s.
SS
PBUF
is wr
itte
n
with
cont
ent
s of S
S
P
S
R
D
u
mm
y re
ad of S
S
P
B
U
F
to cle
a
r B
F
fl
ag
Receive F
irst B
yte
of A
d
dre
ss
12
3
4
5
7
8
9
D7
D6
D5
D4
D3
D1
AC
K
D2
6
T
ran
smitting D
ata
B
yt
e
D0
D
u
mm
y re
ad of
S
S
P
B
U
F
to cle
a
r B
F
fl
ag
Sr
Cle
ar
e
d
in
so
ftwa
re
W
rit
e o
f SS
PBUF
in
itia
te
s tr
an
sm
it
C
lea
re
d i
n
s
o
ftw
a
re
Co
m
p
le
tio
n
o
f
clear
s B
F
flag
C
KP (
SSP
CO
N1
<4
>)
CKP is se
t in
so
ftwa
re
CK
P is a
u
to
m
a
tica
lly
cl
ea
re
d in
h
a
rd
wa
re
, h
o
ld
in
g
SC
L lo
w
Clo
ck is h
e
ld
lo
w u
n
til
upd
a
te of
S
S
P
A
D
D
has
ta
ken p
lace
da
ta
tran
smission
Clo
ck is h
e
ld
lo
w u
ntil
CK
P
is set to
‘1
’
th
ir
d ad
dress s
equen
ce
B
F
fl
ag
is clear
at
the e
nd of t
h
e