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Discussion Groups | 68HC12 | bootloader for 9s12dp256

Join our technical discussions about Freescale Microcontrollers: M68HC12. (Freescale Semiconductor is a Subsidiary of Motorola).

bootloader for 9s12dp256 - Joe McCarron - Sep 10 8:01:00 2004

Does the bootloader come already loaded in flash when
you purchase the chip or do you have to load it ?

Thanks
Joe McCarron




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Re: bootloader for 9s12dp256 - Author Unknown - Sep 10 15:42:00 2004

I use the DP256 religiously. it comes erased. there is no software in it. the boot loader to the best of my knowledge has to be loaded via the bdm cable. once thats done i do believe you can load flash and eeprom code via standard rs-232 serial interface.

hope this helps.

justin
student

----- Original Message -----
From: Joe McCarron
To:
Sent: Friday, September 10, 2004 7:01 AM
Subject: [68HC12] bootloader for 9s12dp256 Does the bootloader come already loaded in flash when
you purchase the chip or do you have to load it ?

Thanks
Joe McCarron Yahoo! Groups Sponsor

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Re: bootloader for 9s12dp256 - Joe McCarron - Sep 11 15:48:00 2004

Thanks Justin
-Joe
--- In , <justincdavis@h...> wrote:
> I use the DP256 religiously. it comes erased. there is no software
in it. the boot loader to the best of my knowledge has to be loaded
via the bdm cable. once thats done i do believe you can load flash
and eeprom code via standard rs-232 serial interface.
>
> hope this helps.
>
> justin
> student
>
> ----- Original Message -----
> From: Joe McCarron
> To:
> Sent: Friday, September 10, 2004 7:01 AM
> Subject: [68HC12] bootloader for 9s12dp256 > Does the bootloader come already loaded in flash when
> you purchase the chip or do you have to load it ?
>
> Thanks
> Joe McCarron > Yahoo! Groups Sponsor
>
> Get unlimited calls to
>
> U.S./Canada >
>
> -------------------------------------------------------------------
-----------
> Yahoo! Groups Links
>
> a.. To >
> [Non-text portions of this message have been removed]



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Re: bootloader for 9s12dp256 - Doron Fael - Sep 11 15:50:00 2004

Joe,

It depends which chip you are using.
Some of the newer HCS12 mask-sets and derivatives come with a loaded
bootloader already programmed in the Flash. The bootloader can be used to
load your own Flash content via an SCI ports or a CAN port. Application
note 2546 in the following link describes this bootloader:
http://www.freescale.com/files/microcontrollers/doc/app_note/AN2546.pdf

Doron
Nohau Corporation
HC12 In-Circuit Emulators
www.nohau.com/emul12pc.html

At 13:01 10/09/2004 +0000, you wrote:
>Does the bootloader come already loaded in flash when
>you purchase the chip or do you have to load it ?
>
>Thanks
>Joe McCarron [Non-text portions of this message have been removed]




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Re: bootloader for 9s12dp256 - freegeeksdotnet - Sep 11 16:30:00 2004

Guys,

I am certain that the bootloader is not yet on any production part
and the date for introduction has not yet been set. I will pass on
the comment to the guy who initiated the project that the app note
indicates otherwise.

Best regards
freegeek
http://www.freegeeks.net --- In , Doron Fael <doronf@n...> wrote:
> Joe,
>
> It depends which chip you are using.
> Some of the newer HCS12 mask-sets and derivatives come with a
loaded
> bootloader already programmed in the Flash. The bootloader can be
used to
> load your own Flash content via an SCI ports or a CAN port.
Application
> note 2546 in the following link describes this bootloader:
>
http://www.freescale.com/files/microcontrollers/doc/app_note/AN2546.pd
f
>
> Doron
> Nohau Corporation
> HC12 In-Circuit Emulators
> www.nohau.com/emul12pc.html
>
> At 13:01 10/09/2004 +0000, you wrote:
> >Does the bootloader come already loaded in flash when
> >you purchase the chip or do you have to load it ?
> >
> >Thanks
> >Joe McCarron > [Non-text portions of this message have been removed]



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