cancel
Showing results for 
Search instead for 
Did you mean: 

PSoC 5, 3 & 1

Anonymous
Not applicable

 Hi,

   

I want to use two PSOC1 chips which will operate at same frequency and their clocks near to perfect phase aligned.

   

Can you please suggest feasible options to achieve this?

   

 

   

Thanks

0 Likes
5 Replies
DennisS_46
Employee

Set one chip to have a clock output at 12 MHz on a pin. Route this signal to P1.4 on the other device, select external clock source in PSoC Designer.

   

---- Dennis

0 Likes
Bob_Marlowe
Expert II

Can it be that you want to execute the same program simultanously on two different chips? If so, you'll need a synchronization feature between them, since they may not startup perfectly parallel, there are some uncalculatable delays.

   

If you tell us a bit more about what you want to accomplish we might help you better.

   

 

   

Bob

0 Likes
ETRO_SSN583
Esteemed Contributor

If you wanted a truly synched pair of processors, like used in medical

   

drug delivery applications, you would need a reset pin that controls

   

startup of the internal CPU state machine, and of course no analog

   

to digital processes driving logic, unless re-synched.

   

 

   

PSOC 1 startup is internally controlled from external voltage Vdd ramp.

   

So to just take a low jitter clock and set both PSOCs to external clock would

   

not suffice. Thats if you want them both executing the same code at the same

   

point in time.

   

 

   

    

   

          

   

http://www.cypress.com/?rID=58522      AN73617

   

 

   

As Bob stated, a more definitive description of what you are trying to do would

   

be helpful.

   

 

   

Regards, Dana.

0 Likes
Anonymous
Not applicable

 Thanks for the response. I want to operate Capsense modules of both PSOC chips in synchronization (clock, shield signal are to be in phase). Is that clear enough?

0 Likes
Bob_Marlowe
Expert II

Since CapSense is not a passive process but an active one where some C is charged and measured one PSoC chip will influence the other when using CapSense on the same buttons / sliders. Additionally it will not be guaranteed that both PSoCs come out of reset synchron. So your explanation will not be enough. The remaining question is: What is the idea behind those two PSoCs, what job ( mission are you trying to accomplish this way?

   

 

   

Bob

0 Likes