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PCA9671 Datasheet, PDF (7/34 Pages) NXP Semiconductors – Remote 16-bit I/O expander for Fm+ I2C-bus with reset
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NXP Semiconductors
PCA9671
Remote 16-bit I/O expander for Fm+ I2C-bus with reset
When AD2, AD1 and AD0 are held to VDD or VSS, the same address as the PCF8575 is
applied.
7.1.1 Address maps
Table 3. PCA9671 address map
AD2 AD1 AD0 A6 A5 A4 A3 A2 A1 A0 Address (hex)
VSS SCL VSS 0
0
1
0
0
0
0
20h
VSS SCL VDD 0
0
1
0
0
0
1
22h
VSS SDA VSS 0
0
1
0
0
1
0
24h
VSS SDA VDD 0
0
1
0
0
1
1
26h
VDD SCL VSS 0
0
1
0
1
0
0
28h
VDD SCL VDD 0
0
1
0
1
0
1
2Ah
VDD SDA VSS 0
0
1
0
1
1
0
2Ch
VDD SDA VDD 0
0
1
0
1
1
1
2Eh
VSS SCL SCL 0
0
1
1
0
0
0
30h
VSS SCL SDA 0
0
1
1
0
0
1
32h
VSS SDA SCL 0
0
1
1
0
1
0
34h
VSS SDA SDA 0
0
1
1
0
1
1
36h
VDD SCL SCL 0
0
1
1
1
0
0
38h
VDD SCL SDA 0
0
1
1
1
0
1
3Ah
VDD SDA SCL 0
0
1
1
1
1
0
3Ch
VDD SDA SDA 0
0
1
1
1
1
1
3Eh
VSS VSS VSS 0
1
0
0
0
0
0
40h
VSS VSS VDD 0
1
0
0
0
0
1
42h
VSS VDD VSS 0
1
0
0
0
1
0
44h
VSS VDD VDD 0
1
0
0
0
1
1
46h
VDD VSS VSS 0
1
0
0
1
0
0
48h
VDD VSS VDD 0
1
0
0
1
0
1
4Ah
VDD VDD VSS 0
1
0
0
1
1
0
4Ch
VDD VDD VDD 0
1
0
0
1
1
1
4Eh
VSS VSS SCL 0
1
0
1
0
0
0
50h
VSS VSS SDA 0
1
0
1
0
0
1
52h
VSS VDD SCL 0
1
0
1
0
1
0
54h
VSS VDD SDA 0
1
0
1
0
1
1
56h
VDD VSS SCL 0
1
0
1
1
0
0
58h
VDD VSS SDA 0
1
0
1
1
0
1
5Ah
VDD VDD SCL 0
1
0
1
1
1
0
5Ch
VDD VDD SDA 0
1
0
1
1
1
1
5Eh
PCA9671_1
Product data sheet
Rev. 01 — 20 December 2006
© NXP B.V. 2006. All rights reserved.
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