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AURIX™ MCU: Why is one-time programmable protection reconfigurable more than once - KBA235528

AURIX™ MCU: Why is one-time programmable protection reconfigurable more than once - KBA235528

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AURIX™ MCU: Why is one-time programmable protection reconfigurable more than once - KBA235528

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One-time programmable (OTP) protection is reconfigurable when the confirmation code is set to 0x43211234, and User Configuration Block (UCB) is in unlocked state. Set the confirmation code to 0x57B5327F to make it permanent.

For more details, please see the “Program Memory Unit (PMU)” (related to AURIX™ TC2xx devices), "Non Volatile Memory (NVM) Subsystem" (related to AURIX™ TC3xx devices) sections of the User’s manual.

Note: This KBA applies to the following series of AURIX™ MCUs:

  • AURIX™ TC2xx series
  • AURIX™ TC3xx series
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