PCA9675
NXP Semiconductors
Remote 16-bit I/O expander for Fm+ I2C-bus with interrupt
START
condition
(S)
bit 7
MSB
(A7)
STOP
bit 0 acknowledge
condition
bit 6
(A6)
protocol
(R/W)
(A)
(P)
t
t
t
HIGH
SU;STA
LOW
1 / f
SCL
0.7 × V
0.3 × V
DD
SCL
SDA
DD
t
t
BUF
f
t
r
0.7 × V
0.3 × V
DD
DD
t
t
t
SU;STO
t
t
t
HD;DAT
VD;DAT
VD;ACK
HD;STA
SU;DAT
002aab175
Rise and fall times refer to VIL and VIH
.
Fig 24. I2C-bus timing diagram
PCA9675
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© NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 2 — 3 October 2011
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