DP256 BDM

Started by Toby Merridan October 1, 2002
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



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/