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PCA9674APW Datasheet(PDF) 3 Page - NXP Semiconductors |
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PCA9674APW Datasheet(HTML) 3 Page - NXP Semiconductors |
3 / 34 page PCA9674_PCA9674A_2 © NXP B.V. 2006. All rights reserved. Product data sheet Rev. 02 — 12 October 2006 3 of 34 NXP Semiconductors PCA9674/74A Remote 8-bit I/O expander for Fm+ I2C-bus with interrupt 5. Block diagram Fig 1. Block diagram of PCA9674/74A Fig 2. Simplified schematic diagram of P0 to P7 002aac108 INT I2C-BUS CONTROL INTERRUPT LOGIC PCA9674 PCA9674A LP FILTER AD0 AD1 AD2 INPUT FILTER SHIFT REGISTER SDA SCL 8 BITS write pulse read pulse POWER-ON RESET VDD VSS I/O PORT P0 to P7 002aac109 write pulse read pulse D CI S FF Q power-on reset data from Shift Register Itrt(pu) 100 µA IOH IOL VDD P0 to P7 VSS D CI S FF Q data to Shift Register to interrupt logic |
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