PCA9539D,112 NXP Semiconductors, PCA9539D,112 Datasheet - Page 10

• Manufacturer Part Number: PCA9539D,112
• Description: IC I/O EXPANDER I2C 16B 24SOIC
• Manufacturer: NXP Semiconductors

Specifications of PCA9539D,112

• Interface: I²C, SMBus
• Number Of I /o: 16
• Interrupt Output: Yes
• Frequency - Clock: 400kHz
• Voltage - Supply: 2.3 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 24-SOIC (7.5mm Width)
• Includes: POR
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 935277297112; PCA9539D; PCA9539D

Fig 7. Write to output port registers
Fig 8. Write to configuration registers
write to port
from port 0
from port 1
data out
data out
SDA
SCL
SDA
SCL
S
START condition
1
S
START condition
1
1
2
1
1
slave address
2
3
1
1
slave address
3
4
1
0
4
5
0
1 A1 A0 0
5
6
1 A1 A0 0
6
7
R/W
7
8
R/W
8
9
A
acknowledge
from slave
9
A
acknowledge
from slave
0
0
0
command byte
0
0
command byte
0
0
0
0
0
1
0
1
1
0
0
A
acknowledge
from slave
MSB
A
acknowledge
from slave
0.7
data to register
DATA 0
data to port 0
DATA 0
t
LSB
v(Q)
0.0
A
acknowledge
from slave
MSB
A
acknowledge
from slave
1.7
data to register
DATA 1
data to port 1
DATA 1
DATA VALID
t
LSB
v(Q)
1.0
002aad726
A
condition
STOP
A
002aad725
P
condition
STOP
P