QB-V850MINIL, QB-V850MINI Emulator 4. Debugging with In-Circuit method
R20UT0221EJ0400 Rev.4.00
Page 69 of 86
2013.08.30
4.6
Recovery of Security ID
This section describes how to recover from the case where the software tool cannot be activated because the user forgot
the ID code or has skipped setting of the ID code, when using the V850MINI self-check board.
Perform the following steps to recover from the above cases.
(1) Remove the V850MINI self-check board from the target system.
(2) Set SW1 on the V850MINI self-check board to “Self Check”.
(3) Connect the flash memory programmer to the FW1 connector on the self-check board.
Caution
To avoid signal conflicts, do not connect QB-V850MINIL or QB-V850MINI to the self-check board when
the flash memory programmer is connected.
Do not supply the clock from the flash memory programmer during writing/erasure.
(Use OSC1 on the self-check board as a clock for writing.)
(4) Enter the settings for the flash memory programmer.
Figure 4-8 shows setting examples when using the QB-Programmer as the flash memory programmer.
(5) Perform a chip erase operation.
After the chip erasure, the security ID is set to “0xFFFFFFFFFFFFFFFFFFFF”.
Figure 4-8. Example of Settings for QB-Programmer
