MIMXRT1020-EVK FlexCAN pin mapping and CAN hardware availability

[Tasnim]

Hi,

I am using the MIMXRT1020-EVK board and trying to use FlexCAN.

From the i.MXRT1020 reference manual, I see that FLEXCAN1 can be mapped to multiple pins, for example:

• FLEXCAN1_TX → GPIO_AD_B0_04 (ALT1)
• FLEXCAN1_RX → GPIO_AD_B0_05 (ALT1)

However, on the MIMXRT1020-EVK board:

• I cannot find any onboard CAN transceiver (e.g., TJA1057)
• I do not see any CAN connector (CANH/CANL)
• The Arduino headers are unpopulated, so it is unclear which pins are actually routed

Could you please clarify:

1. Which exact pins are used for FLEXCAN1 on the MIMXRT1020-EVK?
2. Are GPIO_AD_B0_04 and GPIO_AD_B0_05 routed to any accessible header?
3. Is there any onboard CAN transceiver or should an external transceiver be used?
4. If possible, which header pins correspond to these signals?

Thank you.

[Gavin_Jia]

Hi @Tasnim ,

Thanks for your interest in NXP MIMXRT series!

The schematic for the RT1020-EVK is available on this web page. The EVK board includes the TJA1057GT/3.

Details regarding the question can be found on Page 7 of this schematic.

Best regards,
Gavin