MPC5xxx/S32Kxx: CAN / CAN FD bit timing calculation

Document created by Petr Stancik Employee on Feb 21, 2019Last modified by Petr Stancik Employee on Feb 21, 2019
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This tool simplifies CAN bit timing calculation for CAN modules (FlexCAN, MCAN) available on MPC5xxx and S32K1xx families.


Enter input parameters into light green cells.


Device and Transceiver are selected from pull-down menus.    


By selecting Transceiver, propagation delay parameter is also loaded, but can be simply overwritten by user value.

Rest of parameters can be modified directly upon user needs.


The tool lists possible setting together with register view.

A recommended setting is highlighted. Three criteria are used for recommended values selection

- desired sample point

- highest fcpi accuracy

- same prescalers for nominal and data phases, if CAN FD is calculated


For sure other setting can be selected, if needed, by clicking on respective line in list.


Note: Macros have to be enabled!



BR, Petr

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