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TCAN1145-Q1: nINT-pin

Noriyuki Takahashi
Genius 11000 points
Part Number: TCAN1145-Q1

Hi team,

Customer wants to make the MCU wake up via RXD output of TCAN1145-Q1 like Figure 10-12 on the datasheet.

However, it seems that nINT-pin needs to be used to make the MCU wake up as below.

1. When the MCU can be woken up via RXD output, they think they don't need to use nINT-pin. Is this correct?

2. If they need to use nINT-pin to wake up the MCU, could you tell how to use nINT-pin? 

Regards,

Noriyuki Takahashi

  • +1
    TI__Genius 15345 points

    Noriyuki-san,

    1. Yes the TCAN device will still output a low on the RXD pin:

    2. They do not need to use the nINT pin but if they would to use the interrupt pin they can configure it in the following register:

    You first have to enable the nINT pin feature in the SDO_Config register. Then you can select the configuration of the nINT pin in the PIN_Config register.

    Best,

    Chris