PCA9556PW,112 NXP Semiconductors, PCA9556PW,112 Datasheet - Page 7

• Manufacturer Part Number: PCA9556PW,112
• Description: IC I/O EXPANDER I2C 8B 16TSSOP
• Manufacturer: NXP Semiconductors

Specifications of PCA9556PW,112

• Package / Case: 16-TSSOP
• Interface: I²C, SMBus
• Number Of I /o: 8
• Interrupt Output: Yes
• Frequency - Clock: 100KHz
• Voltage - Supply: 3 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Includes: POR
• Logic Family: PCA9556
• Number Of Lines (input / Output): 8.0 / 8.0
• Operating Supply Voltage: 3 V to 5.5 V
• Operating Temperature Range: - 40 C to + 85 C
• Logic Type: I2C, SMBus
• Mounting Style: SMD/SMT
• Number Of Input Lines: 8.0
• Number Of Output Lines: 8.0
• Output Current: 20 mA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 568-1059-5; 935262899112; PCA9556PW

Philips Semiconductors
SMBus Address
SMBus Transactions
Data is transmitted to the PCA9556 registers using Write Byte transfers (see Figures 7 and 8). Data is read from the PCA9556 registers using
Read and Receive Byte transfers (see FIgures 9 and 10).
2002 Mar 28
Octal SMBus and I
FROM PORT
DATA OUT
WRITE TO
SDA
SDA
SCL
PORT
SCL
start condition
start condition
S
S
Figure 6. PCA9556 address
0
1
1
0
0
Figure 8. WRITE to I/O configuration or polarity inversion registers via Write Byte Protocol
0
fixed
2
2
0
0
slave address
1
3
3
1
1
slave address
slave address
1
4
4
1
1
A2
2
programmable
5
A2
5
A2
C registered interface
Figure 7. WRITE to output port register via Write Byte Protocol
A1 A0
6
A1 A0
6
A1 A0
7
7
R/W
R/W
R/W
su01048
0
0
8
8
A
A
acknowledge
from slave
9
acknowledge
from slave
9
0
0
0
0
0
0
command byte
command byte
0
0
7
0
0
0
0
1
0
1/0
1
A
A
acknowledge
from slave
acknowledge
from slave
data to port
data to register
DATA
DATA 1
t
pv
PCA9556
A
A
acknowledge
from slave
acknowledge
from slave
DATA 1 VALID
P
P
SW00798
Product data
SW00797