In SX Microcontrollers, SX/B Compiler and SX-Key Tool, DigitalDj wrote:

Thanks Paul for the drawings and thanks to everyone contributing!
 

I am kind of new to these chips and to address them this way, i am also new to Sx programming!

 

Paul,

I have some questions on the drawings!

 

Drawing 1

1. The first drawing just has the address lines coming from the SX and i would still have to tell the (8) LM4970's address pins to go low or high to address them?

 

2. Since the LM4970's have address pins does that mean that all (8) Lm4970's can run off of the same I2C buss and then when i want to address each chip i just set the address pin of that chip?

 

 

Drawing 2

1. Are all (8) of the LM4970's using the same buss in this drawing?

 

2. Would i only be able to address one chip at a time by multiplexing?

 

3. If i can use the same I2C buss for all (8) LM4970's could i just use the SX without the mulitplexing chip for addressing the address pins of the LM4970's? 

I guess if i wanted to use more LM4970's say 16 multiplexing would be the way to go!

 

Drawing 3

1. I don't understand what's going on here with the CD4052, i need some explaination as to how this works.

 

 

Since i want to control this circuit from the USB port of the computer will that change any of these circuit ideas. The reason i want to control this circuit from the computer is it gives me more versatility. Also can i get a circuit to convert USB to I2C like the circuit from Parallax for USB to serial?

 

Sorry for all the questions!

Thanks!

Kevin

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