PCA9555AHF,128 NXP Semiconductors, PCA9555AHF,128 Datasheet - Page 10

• Manufacturer Part Number: PCA9555AHF,128
• Description: Interface - I/O Expanders
• Manufacturer: NXP Semiconductors

Specifications of PCA9555AHF,128

• 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: HWQFN-24
• Operating Current: 160 mA
• Output Current: 25 mA
• Power Dissipation: 200 mW
• Product Type: I/O Expanders

Fig 7.
Fig 8.
Write to output port registers
Write to Control registers
write to port
from port 1
from port 0
SDA
data out
data out
SCL
SDA
SCL
S
START condition
1
0
S
START condition
2
1
1
0
slave address
3
0
2
1
4
slave address
0 A2 A1 A0
3
0
5
4
0 A2 A1 A0 0
6
5
7
6
R/W
8
0
7
R/W
9
A
acknowledge
from slave
8
0
9
A
acknowledge
from slave
0/1 0
0
command byte
0
0 0/1 0/1 0/1 0/1
command byte
0
0
0
0
1
A
acknowledge
from slave
0
MSB
A
acknowledge
from slave
0.7
data to register
DATA 0
data to port 0
DATA 0
LSB
t
v(Q)
A
acknowledge
from slave
0.0
MSB
A
acknowledge
from slave
1.7
data to register
DATA 1
data to port 1
DATA 1
DATA VALID
LSB
t
v(Q)
A
acknowledge
from slave
1.0
STOP
condition
P
002aah345
A
002aah344
condition
STOP
P