PCA9671PW,112 NXP Semiconductors, PCA9671PW,112 Datasheet - Page 15

• Manufacturer Part Number: PCA9671PW,112
• Description: IC I/O EXPANDER I2C 16B 24TSSOP
• Manufacturer: NXP Semiconductors

Specifications of PCA9671PW,112

• 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-TSSOP
• Includes: POR
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 568-4193-5; 935283554112; PCA9671PW

Fig 18. Read input port register, scenario 2
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
from slave
7
DATA 00
t
R/W
h(D)
8
9
A
DATA 10
DATA 00
P0x
DATA 01
acknowledge
from master
t
h(D)
A
DATA 02
DATA 10
P1x
acknowledge
t
su(D)
from master
DATA 11
A
DATA 03
DATA 03
P0x
acknowledge
t
su(D)
from master
A
DATA 12
DATA12
P1x
no acknowledge
from master
002aac252
1
P