Hassane El-Khoury

Issue programming HC08 GZ60 with P&E USB MON08 USB

Discussion created by Hassane El-Khoury on Sep 12, 2008
Latest reply on Sep 13, 2008 by Hassane El-Khoury
Hello,
I have been using the demo 908GZ60 board to develop some code, and finally just made my own PCB with the HC08GZ60.
I populated the board, and flashed a sample program, which only sets up the micro, but does not do anything. I use it to make sure I can flash on my PCB.
Well, everything seemed OK, codewarrior was able to commmunicate with the target board, pass security, etc...erase, flash, verify, and at the end of the programming cycle, it tries to re-initialize the target board and that's when it fails.
It loses commmunication with the target board, and the ping, reset do not work either.
I tried this again with a brand new micro, and an unpopulated bosard (basically, only the HC08 and the bypass caps on VCC5) and the same happened. It seems I can only program it once, and then it is "dead".
 
Am I missing something???
 
I attached the circuit I use for the micro.
 
BTW: The test code works repeatadly on the demo board...
 
Thanks for anyone who can give me some pointers.
 
H-

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