In-System Programming Support > P89V51Rx2/P89LV51Rx2
Version 4 of the Bootloader
(1/1)
Andy Ayre:
Version 4 of the bootloader in the P89V51Rx2 devices suffers from a couple of issues. To determine the version of your bootloader:
* Choose ISP -> Read Device Signature...
* The bootloader version will be displayed
Block 0 Erase
Version 4 of the bootloader has an issue with erasing block zero. The solution is to upgrade the bootloader.
Upgrading the Bootloader
Version 4 of the bootloader should be upgraded to version 5 first; see link (1). Follow the instructions. If it doesn't work then try a terminal program such as Hyperterminal to manually update the bootloader.
Once version 5 is installed it can be upgraded to version 7 using the functionality built into Flash Magic; see link (2).
Version 5 solves the block zero erase issue. Version 7 adds the option to use a pin to start the bootloader.
(1) http://ics.nxp.com/support/documents/microcontrollers/all/?scope=P89V51RD2
(2) http://www.flashmagictool.com/resources.html
Navigation
[0] Message Index
Go to full version