What is PCA9548A for ?

Other Hardware 3rd Party Boards
1

what is PCA9548A for ?
is it only to distribute one I2C-channel to modules,where
adress can not modified from a standard (i.w. 0x27) ?

Or can the on SDAx/SDLx used for reading voltages - i.e. for a touch sensor - directly ?

2
  • The data sheet explains its application.
  • See page 13 for a functional diagram.
3

No. The PCA chip is an i2c multiplexer only. It is not an analog multiplexer like 74hc4067.

4

thanks for info !
i'm learning about , how to handle diverse input and output jobs
on modelrailway-controlling..there are a lot of modules, boards

english is not my mother-language and it seems,not all translations meet full reality..sorry

5

so i guess pc9584A can be used for mixing several modules with i2c,
i.e. lcd-Display(fix at 0x27), PWM-multiplexer, mcp23017 and so on, ok ?

6

Here is an Arduido example code for PCA9548 and Arduino:

7

thank you for this..
i've seen that yesterday, but was confused in a manner
by the picture what looks some way different from what i have here..

8

It's just a different design of board with different connectors. The chip is the same and the code will work with your board.

9

This topic was automatically closed 180 days after the last reply. New replies are no longer allowed.