MSP430F6733: MSP430F6733

eli

Guru 13485 points

Part Number: MSP430F6733
Other Parts Discussed in Thread: MSP-GANG

I’m looking for a simple yet effective way to protect the chip from being read/reverse engineered/modified.

over 6 years ago

0 Lukas Badura over 6 years ago

TI__Expert 4695 points

Hi Eli,

Would the JTAG security lock satisfy your request?

Best regards

Lukas

0 eli over 6 years ago in reply to Lukas Badura

Guru 13485 points

Hi
Tanks,but looking for solution without using the electronic fuse

0 Lukas Badura over 6 years ago in reply to eli

TI__Expert 4695 points

Hi Eli,

Without enabling the eFuse, you can always access the device with JTAG and readout memory.
What's your concern about the eFuse?

Lukas

0 eli over 6 years ago in reply to Lukas Badura

Guru 13485 points

Generally – yes. I just didn’t find the way to unlock that memory region using MSP-Gang programmer. If you have some examples, using programmer’s API – it would be appreciated.

0 zrno soli over 6 years ago in reply to eli

Guru 33653 points

JTAG locking / unlocking can be done by your custom BSL, that will clear (write fore zero bytes) fuse area. Or by application itself. Overwrite 055h bytes to 000h on address 0FF80h.

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MSP430F6733: MSP430F6733