Microchip Technology MCU PIC PIC18F87K22-I/PTRSL TQFP-80 MCP PIC18F87K22-I/PTRSL Data Sheet
Product codes
PIC18F87K22-I/PTRSL
2009-2011 Microchip Technology Inc.
DS39960D-page 303
PIC18F87K22 FAMILY
FIGURE 21-11:
I
2
C™ SLAVE MODE TIMING WITH SEN = 0 AND ADMSK<5:1> = 01001
(RECEPTION, 10-BIT ADDRESS)
SDA
x
SCL
x
S
S
P
xIF
(P
IR1<
3>
or
P
IR3<
7>
)
BF
(
S
SPx
S
TA
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
8
9
P
1
1
1
1
0
A
9
A
8
A
7
A
6
A
5
X
A
3
A2
X
X
D7
D6
D5
D4
D3
D1
D
0
Re
ce
iv
e Da
ta
Byte
ACK
R/W
=
0
ACK
Re
ceive F
irs
t B
yte of A
d
dr
ess
C
le
a
re
d in
so
ftwa
re
D2
6
Cle
a
re
d
in
so
ftw
ar
e
R
e
ce
iv
e S
econd B
yte
of A
ddre
ss
C
lea
re
d b
y h
a
rd
w
a
re
w
he
n
SSP
xADD is u
p
d
at
e
d
w
ith
lo
w
byte
of add
ress
UA
(
S
S
P
xS
TA
T
<
1>)
Cl
ock is h
e
ld
lo
w u
n
til
updat
e of S
S
P
xA
D
D
has
ta
ken pl
ac
e
UA
is
set indicat
in
g
tha
t
the S
S
P
xA
D
D
nee
ds to b
e
upda
ted
U
A
is
set
in
di
cati
ng
that
S
S
P
xA
D
D
nee
ds to b
e
update
d
C
le
ar
ed
by har
d
w
a
re
w
hen
SSP
xADD is u
pd
a
te
d
wi
th
h
ig
h
by
te of
addr
e
ss
S
SPxB
U
F
is wr
itte
n with
co
n
te
nt
s o
f SS
Px
SR
D
um
m
y
re
a
d o
f SS
Px
BUF
to clear
B
F
flag
AC
K
CKP
(
S
SPxCON<4
>
)
12
3
4
5
7
8
9
D7
D6
D5
D4
D3
D1
D0
Re
ce
ive
Da
ta
B
yte
B
us m
a
ste
r
term
inates
tran
sfer
D2
6
ACK
Cle
a
re
d
in
so
ftwa
re
Cle
a
re
d
in
so
ftwa
re
SS
PO
V (
SSP
xC
O
N
1
<
6
>
)
S
SPO
V
is
s
et
because
S
S
P
xB
U
F
is
stil
l f
u
ll. AC
K
is no
t sent.
(C
K
P
do
es not
reset
to ‘
0
’ w
hen
S
E
N
=
0
)
Clo
ck is h
e
ld
lo
w u
n
til
upda
te of
S
S
P
xA
D
D
ha
s
ta
ke
n
pl
ac
e
No
te
1
:
x
= Do
n’t c
are
(i.e
., a
dd
ress
bit c
an e
ithe
r b
e a
‘1
’ or
a ‘
0
’)
.
2:
In
th
is
ex
am
pl
e
, a
n
a
d
dr
ess e
qu
a
l to
A9
.A8
.A
7
.A6
.A5
.X.A3
.A2
.X.X will b
e
Ackn
o
wl
ed
g
ed
a
nd
ca
us
e a
n i
n
te
rr
u
pt.
3:
N
ot
e th
at
the
Mo
st S
ign
ifi
can
t bi
ts of
the
ad
dre
ss a
re
not
af
fe
cted
by
the
bi
t
mas
ki
ng.