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FCCU errata number e9570 of MPC5777C

Question asked by ravindra petankar on Mar 20, 2017
Latest reply on Mar 23, 2017 by ravindra petankar


I am working on MPC5777C.

The errata e9570 of FCCU which mentions "FOSU may assert reset when a hardware recoverable fault of width less than one safe clock period occurs"

The workaround mentioned for this errata are

  1. Program Request reset pulse in the associated FCCU Non-Critical Fault State Configuration (FCCU_NCFS_CFGn) register for that hardware recoverable fault in addition to the EOUT signaling.
  2. Alternatively, if the reset reaction is not desired, configure the fault as software recoverable.


As a third workaround can the ALARAM interrupt be used with configurable time out in FCCU_NCF_TO.?

As the errata says “hardware recoverable fault of width less than one safe clock period”, this time can be programmed in FCCU_NCF_TO register to avoid the fault situation.


Is this approach can be used as workaround for this errata.?