PCAL9555APW,118 NXP Semiconductors, PCAL9555APW,118 Datasheet - Page 17
PCAL9555APW,118
Manufacturer Part Number
PCAL9555APW,118
Description
Interface - I/O Expanders 16b I2C BUS INTERUPT
Manufacturer
NXP Semiconductors
Datasheet
1.PCAL9555AHF128.pdf
(46 pages)
Specifications of PCAL9555APW,118
Rohs
yes
Maximum Operating Frequency
100 kHz
Operating Supply Voltage
1.65 V to 5.5 V
Operating Temperature Range
- 40 C to + 85 C
Mounting Style
SMD/SMT
Package / Case
TSSOP-24
Operating Current
160 mA
Output Current
25 mA
Power Dissipation
200 mW
Product Type
I/O Expanders
Factory Pack Quantity
2500
Fig 10. Read input port register (input latch disabled), scenario 1
data into port 0
data into port 1
SDA
read from port 0
read from port 1
INT
INT
SCL
S
START condition
Remark: 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). It
is assumed that the command byte has previously been set to ‘00’ (read input port register).
1
0
2
1
slave address
t
3
v(INT)
0
4
0 A2 A1 A0 1
5
6
acknowledge
from slave
7
R/W
8
9
A
7
t
rst(INT)
6
5
4
I0.x
3
acknowledge
2
from master
1
0
A
7
6
5
4
I1.x
3
acknowledge
2
from master
1
0
A
A
7
6
5
4
I0.x
3
acknowledge
2
from master
1
0
A
7
6
5
4
I1.x
3
non acknowledge
2
from master
STOP condition
1
0
002aah375
1
P