PCA9675BS NXP [NXP Semiconductors], PCA9675BS Datasheet - Page 15
PCA9675BS
Manufacturer Part Number
PCA9675BS
Description
Remote 16-bit I/O expander for Fm+ I2C-bus with interrupt
Manufacturer
NXP [NXP Semiconductors]
Datasheet
1.PCA9675BS.pdf
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Fig 18. Read input port register, scenario 2
SCL
SDA
read from port 0
data into port 0
read from port 1
data into port 1
INT
S
START condition
Transfer of data can be stopped at any moment by a STOP condition. When this occurs, data present at the latest acknowledge phase is valid (output mode).
1
0
2
1
3
0
t
v(D)
4
0 A2 A1 A0 1
5
6
acknowledge
from slave
DATA 00
7
t
R/W
h(D)
8
9
A
DATA 10
t
d(rst)
DATA 00
P0x
DATA 01
acknowledge
from master
t
h(D)
A
DATA 02
DATA 10
P1x
acknowledge
t
DATA 11
su(D)
from master
A
DATA 03
DATA 03
P0x
acknowledge
t
su(D)
from master
A
DATA 12
DATA 12
P1x
no acknowledge
from master
002aab811
1
P
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