• State Resolved
  • Locked Locked
  • Replies 2 replies
  • Subscribers 83 subscribers
  • Views 501 views
  • Users 0 members are here
Support feedback
Options
Options
Related

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.

CAN Voltage levels on TMS320F28377

Jason Larkin
Intellectual 370 points


What is the voltage high, low, and standby levels for the CAN transmitter on the TMS320F28377X?

Is it standard digital I/O levels of 0 & 3.3 or does it use high, low, & standby of 0.8*3.3, 0.2*3.3, & 0.5*3.3V ?

Can I hook up an isolated CAN transciever to the CAN ports and use the TMS320F28377 as a CAN controller.

Thanks,

Jason

  • 0
    Guru 192875 points

    Hi Jason,

    Jason Larkin said:

    What is the voltage high, low, and standby levels for the CAN transmitter on the TMS320F28377X?

    Is it standard digital I/O levels of 0 & 3.3 or does it use high, low, & standby of 0.8*3.3, 0.2*3.3, & 0.5*3.3V ?

    Its Standard. 0V and 3.3V

    Jason Larkin said:
    Can I hook up an isolated CAN transciever to the CAN ports and use the TMS320F28377 as a CAN controller.

    Yes, why not. You do need a transceiver, check this table:

    Regards,

    Gautam

  • 0
    TI__Guru* 95315 points

    1. It is the standard digital I/O levels. A more precise answer would be: "The output level on CANTX pin would fall within the MIN & MAX spec for VOH & VOL as shown in the datasheet". i.e. it is not simply 0 & 3.3v, but within the (narrow) range as spec'd in the datasheet.

    2. Yes, you can use an isolated CAN transceiver. Note however that 28377x uses 3.3v I/O, so make sure that the signal presented to the CANRX pin does not exceed 3.3v. I am saying this because there are 5v CAN transceivers as well.