PCA9555DB IIC Address



Config PCA9555 IIC Address with A0~A2 Jumper Caps (0x20~0x27)

Plug = 0

Unplug = 1

A2

A1

A0

I2C Address

0

0

0

0x20 (Default)

0

0

1

0x21

0

1

0

0x22

0

1

1

0x23

1

0

0

0x24

1

0

1

0x25

1

1

1

0x26

1

1

1

0x27

"D": represents digital signal

"A": represents analog signal

One of the biggest benefits of the I/O expansion shield is more power and GND pins, allowing you to

connect more sensors.

* Green: digital signal

* Blue: analog signal

* Red: VCC

* Black: GND