PCA9671PW,112 NXP Semiconductors, PCA9671PW,112 Datasheet - Page 11

• 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

NXP Semiconductors
PCA9671
Product data sheet
Fig 13. PCA9671 ID
Fig 14. Device ID field reading
S
START condition
manufacturer name
Remark: The reading of the Device ID can be stopped anytime by sending a NACK
command.
Remark: If the master continues to ACK the bytes after the third byte, the PCA9671
rolls back to the first byte and keeps sending the Device ID sequence until a NACK
has been detected.
For the PCA9671, the Device ID is as shown in
M7
= 00000000
1
M6 M5 M4
device ID address
1
If more than 2 bytes are read, the slave device loops back to the first byte (manufacturer byte) and
keeps sending data until the master generates a ‘no acknowledge’.
1
part identification
1
All information provided in this document is subject to legal disclaimers.
M3
1
M2 M1 M0
0
0
Rev. 2 — 29 July 2010
R/W
0
0
A
A
acknowledge from one
or several slave(s)
acknowledge
from master
0
Remote 16-bit I/O expander for Fm+ I
category identification
A6
C6
the device to be identified
I
2
category identification
C-bus slave address of
manufacturer
C5 C4 C3
0
A5 A4 A3 A2 A1 A0 X
= 0000001
0
0
C2
C1 C0 F5
0
0
don't care
0
1
Figure
feature identification
0
0
acknowledge from
slave to be identified
A
A
acknowledge
from master
= 010100
feature identification
revision
0
1
F4
1
13.
P3 P2 P1
device ID address
1
0
0
1
0
1
0
1
slave to be identified
002aac249
0
0
0
P0 R2 R1 R0
PCA9671
1
acknowledge from
© NXP B.V. 2010. All rights reserved.
2
revision = 000
C-bus with reset
no acknowledge
0
0
0
0
from master
0
R/W
1
condition
002aac335
STOP
A
A
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