Datasheet

xxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxx x x x xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxx xx xx xxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxx xxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxx x x
xxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxx xxx
PCA9673 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved. Product data sheet Rev. 2 — 29 September 2011 14 of 33 NXP Semiconductors
PCA9673
Remote 16-bit I/O expander for Fm+ I
2
C-bus with interrupt and reset
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).
Fig 16. Read input port register, scenario 2
1 AS
START condition R/W
acknowledge
from slave
002aac313
A
acknowledge
from master
SCL
SDA
A
read from port 0
data into port 0
INT
A 1
no acknowledge
from master
P
DATA 10 DATA12
t
v(D)
t
d(rst)
987654321
P0x
DATA 00
acknowledge
from master
P1x P0x
acknowledge
from master
P1x
data into port 1
DATA 00
read from port 1
DATA 11
t
h(D)
DATA 01
t
h(D)
DATA 02
t
su(D)
DATA 03
t
su(D)
A5 A4 A3 A2 A1 A0A6 DATA 10 DATA 03 DATA 12