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Messages - Xavi

#1
Old Topics / P89C664 ISP with undocumented command
January 19, 2004, 08:19:56 AM
Hi,
I want to build my own software for ISP with this kind of micro. My project needs to be in a closed box that will never be opened. Then, I want to use embedded ISP firmware from Philips to program Flash with my code. Then, micro will need to be reset to enter in "User" mode, leaving the bootloader.

After carefully reading all the documentation available for this type of micro, I haven't found a RESET command that lets me avoid having to do it by hardware. But I know that it exists!!

As FlashMagic has this option, and physically sends a command that is not documented in Philips datasheets or Application Notes, I want to know if I can use the same string sent by FlashMagic to perform a Reset or if this command format can be changed in new releases without notice in the next years or months.

If this command is public, and I'm bad searching docs, feel free to let me know where to find it

Xavi