PCA9671DK,118 NXP Semiconductors, PCA9671DK,118 Datasheet - Page 14

• Manufacturer Part Number: PCA9671DK,118
• Description: IC I/O EXPANDER I2C 16B 24QSOP
• Manufacturer: NXP Semiconductors

Specifications of PCA9671DK,118

• Interface: I²C
• Number Of I /o: 16
• Interrupt Output: No
• Frequency - Clock: 1MHz
• Voltage - Supply: 2.3 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 24-QSOP
• Includes: POR
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 568-4191-2; 935283553118; PCA9671DK-T

Fig 17. Read input port register, scenario 1
SCL
SDA
read from port 0
data into port 0
read from port 1
data into port 1
S
START condition
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).
1
0
2
1
3
0
4
0 A2 A1 A0 1
5
6
acknowledge
DATA 00
from slave
7
DATA 10
R/W
8
9
A
DATA 00
P0x
acknowledge
from master
DATA 11
A
DATA 11
P1x
acknowledge
from master
A
DATA 00
P0x
acknowledge
from master
DATA12
A
DATA 12
P1x
no acknowledge
from master
002aac251
1
P