Datasheet

PCA9672 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2013. All rights reserved.
Product data sheet Rev. 3 — 27 May 2013 6 of 36
NXP Semiconductors
PCA9672
Remote 8-bit I/O expander for Fm+ I
2
C-bus with interrupt and reset
7.1.1 Address map
7.2 Software Reset Call, and device ID addresses
Two other different addresses can be sent to the PCA9672.
• General Call address: allows to reset the PCA9672 through the I
2
C-bus upon
reception of the right I
2
C-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 (PCA9672 ID field)” for more
information.
Table 4. PCA9672 address map
Pin connectivity Address of PCA9672 Address byte value 7-bit
hexadecimal
address
without R/W
AD1 AD0 A6 A5 A4 A3 A2 A1 A0 R/W Write Read
SCL V
SS
0 0 1 0 0 0 0 - 20h 21h 10h
SCL V
DD
0010001 - 22h 23h 11h
SDA V
SS
0 0 1 0 0 1 0 - 24h 25h 12h
SDA V
DD
0 0 1 0 0 1 1 - 26h 27h 13h
SCL SCL 0 0 1 1 0 0 0 - 30h 31h 18h
SCL SDA 0 0 1 1 0 0 1 - 32h 33h 19h
SDA SCL 0 0 1 1 0 1 0 - 34h 35h 1Ah
SDA SDA 0 0 1 1 0 1 1 - 36h 37h 1Bh
V
SS
V
SS
0 1 0 0 0 0 0 - 40h 41h 20h
V
SS
V
DD
0 1 0 0 0 0 1 - 42h 43h 21h
V
DD
V
SS
0 1 0 0 0 1 0 - 44h 45h 22h
V
DD
V
DD
0 1 0 0 0 1 1 - 46h 47h 23h
V
SS
SCL 0 1 0 1 0 0 0 - 50h 51h 28h
V
SS
SDA 0 1 0 1 0 0 1 - 52h 53h 29h
V
DD
SCL 0 1 0 1 0 1 0 - 54h 55h 2Ah
V
DD
SDA 0 1 0 1 0 1 1 - 56h 57h 2Bh
Fig 7. General Call address
Fig 8. Device ID address
0
002aac115
0 0 0 0 0 0 0
R/W
R/W
002aac116
1 1 1 1 1 0 0