No Vpp Programming Voltage

[Philou]

Hi guys

i'm trying to debug a S12X software, and i have this issue, no programming voltage. i have suspected a board issue. but on another one it's the same issue.

i have that on the command display:

Vppon command file correctly executed.

FP: No programming voltage

FP: No programming voltage

FP: ALL_PPAGES flash module is bad or protected.
executing .\cmd\P&E_Multilink_CyclonePro_vppoff.cmd

i have tried to unsecure the chip, but when i do that the debbugger crashes.

Any thoughts?

Thanks for your help.

Philou

[Philou · Accepted solution]

Found the issue. Even if I have checked that on the rising edge of the reset the state of MODA and MODB (low), it was not sufficient. Theses pins must be pulled down no for setting the correct MCU mode.