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+---- Thread: BDM readout of KVM (RFA) module MC9S12XD (/showthread.php?tid=63944)
BDM readout of KVM (RFA) module MC9S12XD - go4it - 29-04-2022
I try to readout the firmware of an 7S7T-19G481-DA keyless-vehicle-module. The unit uses an MC9S12XD microcontroller and i managed to find the BDM pads on the PCB. But connection is interrupted by a (external?) reset-pulse after about 400ms of BDM-reset.
Does anybody know if there is an extra reset-chip on the board, needs to be disabled? I access the chip without powering the whole unit, the MCU get's power from BDM interface.
RE: BDM readout of KVM (RFA) module MC9S12XD - dimitar - 01-11-2022
I think this one is locked...try lifting reset pin