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SPC58NN JTAG Lock and Unlock

Akhilesh_30
Associate II

Hi Team,

We have a requirement to lock the JTAG for the SPC58NN controller.

Could anyone please share the detailed procedure to:

  • Lock/disable the JTAG debug access
  • Configure password-based protection
  • Unlock/re-enable the JTAG access using the password
  • Any related tool dependencies (UDE, SPC5-UDESTK, ST tools, etc.)
  • Required fuse/OTP configuration precautions and recovery considerations

It would also be helpful if you could share:

  • Whether the operation is reversible
  • Any impact on secure boot or bootloader behavior
  • Recommended production flow for enabling JTAG lock

Any references or example steps would be greatly appreciated.

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