PCA9675
NXP Semiconductors
Remote 16-bit I/O expander for Fm+ I2C-bus with interrupt
Table 3.
PCA9675 address map …continued
AD2
SCL
SCL
SCL
SCL
SDA
SDA
SDA
SDA
SCL
SCL
SCL
SCL
SDA
SDA
SDA
SDA
AD1
VSS
VSS
VDD
VDD
VSS
VSS
VDD
VDD
VSS
VSS
VDD
VDD
VSS
VSS
VDD
VDD
AD0
VSS
A6
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
A5
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
A4
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
A3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
A2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
A1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
A0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Address (hex)
C0h
VDD
VSS
C2h
C4h
VDD
VSS
C6h
C8h
VDD
VSS
CAh
CCh
CEh
E0h
VDD
SCL
SDA
SCL
SDA
SCL
SDA
SCL
SDA
E2h
E4h
E6h
E8h
EAh
ECh
EEh
7.2 Software Reset call, and Device ID addresses
Two other different addresses can be sent to the PCA9675.
• General Call address: allows to reset the PCA9675 through the I2C-bus upon
reception of the right I2C-bus sequence. See Section 7.2.1 “Software Reset” for more
information.
• Device ID address: allows to read ID information from the device (manufacturer, part
identification, revision). See Section 7.2.2 “Device ID (PCA9675 ID field)” for more
information.
R/W
0
0
0
0
0
0
0
0
002aac155
Fig 8. General Call address
R/W
1
1
1
1
1
0
0
002aab638
Fig 9. Device ID address
PCA9675
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 2 — 3 October 2011
8 of 34
NXP [ NXP ]
