PCA9535AHF,128 NXP Semiconductors, PCA9535AHF,128 Datasheet - Page 13

• Manufacturer Part Number: PCA9535AHF,128
• Description: Interface - I/O Expanders 16bit I2C IO Port
• Manufacturer: NXP Semiconductors

Specifications of PCA9535AHF,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
• Power Dissipation: 200 mW
• Product Type: I/O Expanders

Fig 11. Read input port register, scenario 2
data into port 0
data into port 1
SDA
read from port 0
read from port 1
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).
This figure eliminates the command byte transfer and a restart between the initial slave address call and the actual data transfer from P port (see
1
0
2
1
slave address
3
t
v(INT)
0
4
0 A2 A1 A0 1
5
6
acknowledge
from slave
DATA 00
7
R/W
8
9
A
DATA 10
t
rst(INT)
t
h(D)
DATA 00
I0.x
DATA 01
acknowledge
from master
A
t
h(D)
DATA 10
DATA 02
I1.x
t
acknowledge
su(D)
from master
DATA 11
A
A
DATA 03
DATA 03
I0.x
t
su(D)
acknowledge
from master
A
DATA 12
DATA 12
I1.x
Figure
non acknowledge
from master
STOP condition
9).
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1
P