• State Resolved
  • Locked Locked
  • Replies 1 reply
  • Subscribers 46 subscribers
  • Views 87 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

ADS8327: chain mode

Kailyn Chen
Genius 9560 points
Part Number: ADS8327

Hello,

About the chain mode of ADS8327, it used the separate CS to connect GPIOx of controller, I'd like to confirm if CS could connect together? 

Best regards

kailyn 

  • +1
    TI__Mastermind 36240 points

    Hello Kailyn,

    Yes, you can connect all /CS pins together to a single GPIO pin.  You will lose the EOC function.  In this case, after starting a conversion, you will need to delay the maximum conversion time of 1714nsec before pulling /CS low and reading the data out.

    Using the internal clock, the minimum CCLK frequency is 10.5Mhz, or a maximum period of 95nsec.  Each conversion cycle takes 18 CCLK clock cycles, for a maximum conversion time of 18*95nsec=1714nsec.

    Also, since the EOC/INT pin on ADS8327 (#1) is configured as an input (CDI function), you should connect this pin to ground through a 10kohm resistor.

    Regards,
    Keith Nicholas
    Precision ADC Applications