PCA9557PW,118 NXP Semiconductors, PCA9557PW,118 Datasheet - Page 11

• Manufacturer Part Number: PCA9557PW,118
• Description: IC I/O EXPANDER I2C 8B 16TSSOP
• Manufacturer: NXP Semiconductors

Specifications of PCA9557PW,118

• Package / Case: 16-TSSOP
• Interface: I²C, SMBus
• Number Of I /o: 8
• Interrupt Output: No
• Frequency - Clock: 400kHz
• Voltage - Supply: 2.3 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Includes: POR
• Logic Family: PCA9557
• Number Of Lines (input / Output): 8.0 / 8.0
• Operating Supply Voltage: 2.3 V to 5.5 V
• Power Dissipation: 200 mW
• Operating Temperature Range: - 40 C to + 85 C
• Input Voltage: 5 V
• Logic Type: I2C, SMBus
• Maximum Clock Frequency: 400 KHz
• Mounting Style: SMD/SMT
• Number Of Input Lines: 8.0
• Number Of Output Lines: 8.0
• Output Current: 50 mA
• Output Voltage: 5 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 568-1061-2; 935270669118; PCA9557PW-T

NXP Semiconductors
PCA9557
Product data sheet
Fig 14. Write to output port register
Fig 15. Write to I/O configuration or polarity inversion registers
SDA
write to port
data out from port
SDA
SCL
SCL
S
START condition
S
START condition
1
1
0
0
8.4 Bus transactions
2
2
0
0
slave address
slave address
3
3
1
1
Data is transmitted to the PCA9557 registers using Write Byte transfers (see
and
transfers (see
Fig 13. Acknowledgement on the I
4
4
1 A2 A1 A0
1 A2 A1 A0
Figure
5
5
6
6
7
7
SCL from master
15). Data is read from the PCA9557 registers using Read and Receive Byte
R/W
R/W
8
8
0
by transmitter
0
Figure 16
data output
by receiver
data output
9
9
A
acknowledge
from slave
A
acknowledge
from slave
0
0
0
0
Rev. 06 — 11 June 2008
and
condition
command byte
command byte
START
0
0
S
0
0
Figure
0
0
0
0
2
C-bus
17).
0
1 1/0
1
1
A
acknowledge
from slave
A
acknowledge
from slave
8-bit I
2
2
C-bus and SMBus I/O port with reset
data to register
data to port
DATA 1
DATA
acknowledgement
not acknowledge
clock pulse for
acknowledge
8
t
v(Q)
A
acknowledge
from slave
A
acknowledge
from slave
PCA9557
© NXP B.V. 2008. All rights reserved.
002aaa987
DATA 1 VALID
STOP
condition
P
9
STOP
condition
P
002aad281
002aad282
Figure 14
11 of 26