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TIC12400-Q1: wake up questions

Kailyn Chen
Genius 9560 points
Part Number: TIC12400-Q1
Other Parts Discussed in Thread: TIC12400,

Hello，

Without BOOTLOADER, the ECU software works normally and after hibernation, the various wake-up sources (can, LIN, TIC12400, RF) can wake the ECU. However, with the addition of BOOTLOADER, the various wake-up sources (can, LIN, Radio frequency) can wake the ECU, except for the TIC12400.So the question is that:

1. When use TIC12400, should I need to consider other attention during wake up?

2. When compiling the TIC12400 drive, several places  refers to the humidification current plus (e.g. WC_CFG0, WC_CFG1, CCP_CFG0, CCP_CFG1, etc.). What is the basis for setting up the low-moisture current ? 

Best regards

kailyn

  • 0
    TI__Mastermind 22635 points

    Kailyn,

    Thanks for reaching out! Sorry for our delays during the holiday season.

    Kailyn Chen said:
    1. When use TIC12400, should I need to consider other attention during wake up?

    I am assuming you are somehow using the INT pin of the TIC12400-Q1 to wake up the microcontroller in your design. Could you give some additional detail about what's going on here that is causing an issue with your microcontroller's wake-up?

    Kailyn Chen said:
    2. When compiling the TIC12400 drive, several places  refers to the humidification current plus (e.g. WC_CFG0, WC_CFG1, CCP_CFG0, CCP_CFG1, etc.). What is the basis for setting up the low-moisture current ? 

    Just for sake of clarification, please note that I believe you intend to refer to the "wetting current" for the device. The wetting current necessary for the implementation of the TIC12400-Q1 is a function of the switches being used. Section 8.3.8.5 of the data sheet should give a good overview of this. Section 8.4.3.2 talks about the benefit of auto-scaling. The registers you have alluded to represent configurations for the wetting current and for configuration in clean current polling (CCP) mode.

    Best,

    Danny