PCA9544 Programming

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PCA9544 Datasheet

PCA9544 Datasheet

Block Diagram

PCA9544A-BLK-DIA.PNG

I2C Addressing

Base Address = 0x70

PCA9544A-ADDR-ING.PNG

Read transaction

PCA9544A-CTRL-BYTE-TRANS-RD.PNG

Write transaction

PCA9544A-CTRL-BYTE-TRANS-WR.PNG

Control Register

Control Register bits

PCA9544A-CTRL-BYTE.PNG

Bit interpretation

PCA9544A-CTRL-BYTE-BITS.PNG

Interrupts

PCA9544A-CTRL-READ-INTS.PNG

Drivers

Arduino Driver

Raspberry Pi Driver

BeagleBone Black Driver