can transiever TJA1044 does't work for S32K144

[learningtreesdi]

Hello,

I'm trying to use the s32k144 mcu for CAN communication on s32ds.
Using TJA1040 transiever can successfully communicate with usb-can II.However, it is always in a state of status busy and cannot be sent successfully after replacing TJA1040 with pin to pin compatible TJA1044.

TJA1040 DS: https://www.nxp.com/docs/en/data-sheet/TJA1040.pdf

TJA1044 DS: https://www.nxp.com/docs/en/data-sheet/TJA1044.pdf

The attachment is the test project.  

Thanks in advance.PetrS

[PetrS]

Hi,

hard to say, which TJA1044 variant do you use?

For example TJA1044GT/3 is not pin compatible, pin 5 is using for Vio, while for others is is n.c.

Can you share your schematic for CAN circuitry?

BR, Petr

[learningtreesdi]

Thanks Petr, i solve this problem. The reason is STB pin does not solder well.

LT

Sent from my Samsung Galaxy smartphone.