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Toby, The application firmware can be updated in the field through the BDM port using a tool such as Motorola's Serial BDM Programmer (P/N: SCBDMPGMR12, $500). Info on the programmer can be found at: http://e-www.motorola.com/webapp/sps/site/prod_summary.jsp?code=SCBDMPGMR12&parentCode=MC9S12DP256&releaseLevel=null&nodeIdM0ylfWcbfM0zGQbJwn An alternative can be to use a bootloader that receives the new firmware through one of the chip's communications channels. See Application Note AN2153 for an example of a bootloader that uses the DP256's SCI to receive S-Records and reprogram the on-chip Flash. Regards, Gordon -- =============================================================== Gordon Doughman Ph: 937-438-6811 Motorola Semiconductor Fax: 937-434-7457 Field Applications Engineer Pager: 800-759-8352 Pin: 1304089 Suite 175 3131 Newmark Drive Miamisburg, OH 45342 Check out my HC12 book at: http://www.rtcgroup.com/books/ Toby Merridan wrote: > Hi Folks, > > I have an application using a DP256 where the program may need to be changed > in the field. Does the Chip automatically detect when the BDM Port is > connected to? > > Is this the correct way to initiate Program updated to a finished product > using this chip? > > Regards > > Toby Merridan > > > -------------------- > > ">http://docs.yahoo.com/info/terms/ |