Microchip Technology MCP3421DM-WS Data Sheet
PIC18F2455/2550/4455/4550
DS39632E-page 216
© 2009 Microchip Technology Inc.
FIGURE 19-9:
I
2
C™ SLAVE MODE TIMING WITH SEN = 0 AND ADMSK<5:1> = 01011
(RECEPTION, 7-BIT ADDRESS)
SDA
SCL
S
S
P
IF
(P
IR1<
3>
)
BF
(
S
SPS
TA
T
<
0
>
)
S
SPO
V
(
S
SPCO
N
1
<
6
>
)
S
12
3
4
5
6
7
8
91
2
3
4
5
6
7
8
9
12
3
4
5
7
8
9
P
A
7
A
6
A
5
X
A
3
X
X
D
7
D
6
D
5
D
4D
3D
2
D
1
D
0
D
7D
6D
5
D
4
D
3
D
1
D
0
AC
K
Re
ce
ivin
g
Da
ta
ACK
Re
ce
ivin
g
Da
ta
R/W
=
0
ACK
R
ecei
vi
ng A
ddr
ess
C
lear
ed i
n
so
ftw
a
re
SS
PBUF
is
r
e
a
d
B
u
s m
aster
ter
m
inate
s
tra
n
sfer
SS
PO
V is
s
e
t
beca
use S
S
P
B
U
F
is
still fu
ll. ACK
is
not se
nt.
D2
6
CKP
(C
K
P
does n
o
t re
set to ‘
0
’ wh
en
SE
N =
0
)
No
te
1
:
x
=
D
on’
t car
e (
i.e.,
add
re
ss bi
t can
be
ei
th
er
a ‘
1
’ or
a ‘
0
’).
2:
In
th
is e
xa
m
p
le
, a
n a
dd
re
ss
eq
u
al
to
A7
.A6
.A5
.X.A3
.X.X will b
e
Ackn
o
wle
dg
ed
a
n
d ca
us
e
an
in
te
rr
u
pt
.