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TCAN1145-Q1: Store user data on TCAN1145

Skylar Li
Expert 3540 points

Part Number: TCAN1145-Q1

Hi Experts,

I need to find an 8-bit register on the tcan1145 to hold user data. The tcan1145 does not support the watchdog function.

Can I use the WD_CONFIG_1 register (address 13h) to store data? Does writing data to this register affect the tcan1145 function? 

Also I found Scratch_Pad_SPI, a register used to test spi read and write functions, is this more appropriate to write data to Scratch_Pad_SPI? Thanks.

BR,

Skylar

  • 0
    TI__Guru 70447 points

    Hi Skylar,

    Today is a public holiday. 

    Please give some time until after the holiday for some feedback thanks. 

    Best Regards,

    Michael.

  • 0
    TI__Mastermind 24572 points

    Hi Skylar,

    I would not recommend using the WF_CONFIG_1 register to store data. 

    However, the Scratch pad register will work exactly for their use case. Just note that with any SPI based transceiver like the TCAN114x series, the register values are lost when the VSUP rail becomes unpowered. 

    Additionally, you can switch to the TCAN1146 which is the same as the TCAN1145, but with added features like the watchdog. 

    Best,

    Ethan