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PCAL9539APW Datasheet(PDF) 16 Page - NXP Semiconductors

Part # PCAL9539APW
Description  Low-voltage 16-bit I2C-bus and SMBus low power I/O port with interrupt and reset
PDF  48 Pages
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Manufacturer  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

PCAL9539APW Datasheet(HTML) 16 Page - NXP Semiconductors

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Fig 7.
Write to output port registers
1101
A1 A0
0
A
S1
START condition
R/W
acknowledge
from slave
002aad725
A
SCL
SDA
A
write to port
data out
from port 0
P
tv(Q)
9
8
7
6
5
4
3
2
1
command byte
data to port 0
DATA 0
slave address
0000010
0
STOP
condition
0.0
0.7
acknowledge
from slave
acknowledge
from slave
data to port 1
DATA 1
1.0
1.7
A
data out
from port 1
tv(Q)
DATA VALID
Fig 8.
Write to Control registers
0
A
S
slave address
START condition
R/W
acknowledge
from slave
002aah063
0/1 0
0 0/1 0/1 0/1 0/1
0
command byte
A
acknowledge
from slave
12345678
SCL
9
SDA
DATA 0
A
acknowledge
from slave
data to register
1101
A1 A0
1
P
STOP
condition
MSB
LSB
A
acknowledge
from slave
DATA 1
data to register
MSB
LSB



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