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PCA9674TS Datasheet(PDF) 7 Page - NXP Semiconductors |
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PCA9674TS Datasheet(HTML) 7 Page - NXP Semiconductors |
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7 / 34 page  PCA9674_PCA9674A_2 © NXP B.V. 2006. All rights reserved. Product data sheet Rev. 02 — 12 October 2006 7 of 34 NXP Semiconductors PCA9674/74A Remote 8-bit I/O expander for Fm+ I2C-bus with interrupt The last bit of the first byte defines the operation to be performed. When set to logic 1 a read is selected, while a logic 0 selects a write operation. When AD2, AD1 and AD0 are held to VDD or VSS, the same address as the PCF8574 or PCF8574A is applied. 7.1.1 Address maps Fig 8. PCA9674/74A address R/W 002aab636 A6 A5 A4 A3 A2 A1 A0 programmable slave address Table 5. PCA9674 address map AD2 AD1 AD0 A6 A5 A4 A3 A2 A1 A0 Address VSS SCL VSS 001000020h VSS SCL VDD 001000122h VSS SDA VSS 001001024h VSS SDA VDD 001001126h VDD SCL VSS 001010028h VDD SCL VDD 00101012Ah VDD SDA VSS 00101102Ch VDD SDA VDD 00101112Eh VSS SCL SCL 001100030h VSS SCL SDA 0 01100132h VSS SDA SCL 001101034h VSS SDA SDA 001101136h VDD SCL SCL 001110038h VDD SCL SDA 0 0111013Ah VDD SDA SCL 00111103Ch VDD SDA SDA 00111113Eh VSS VSS VSS 010000040h VSS VSS VDD 010000142h VSS VDD VSS 010001044h VSS VDD VDD 010001146h VDD VSS VSS 010010048h VDD VSS VDD 01001014Ah VDD VDD VSS 01001104Ch VDD VDD VDD 01001114Eh |
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