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Discussion Groups | LPC900 | Re: Re: (unknown)
Find help, specifications and source code for the LPC900. The LPC900 challenges Microchip and AVR based on the worlds most popular 8-bit architecture the 80C51. With a 2-clock core the LPC900 series is a high performance, very flexible and low cost 8-bit microcontroller family. Designers using or interested in these devices are encouraged to share their know-how and ask questions.
Re: Re: (unknown) - "Vijay M. Satra" - Mar 28 3:11:12 2008
Thanks for your promt reply.
my question was if i erase the bootloader in isp then can i program this ic through three pulse entry ?
IN ICP methode i can erase the bootloader & reprogram it.
On Fri, 28 Mar 2008 Omar Espinosa wrote :
>Dear Vijay,
> I do not understand your question exactly.
> I developed a LPC programmer which is quite good for the entire family of LPC's chips .
> Thanks to Bootloader you can place your application code into the chip. To call the bootloader program you have to apply three pulses on the reset after power on, for LPC922 LPC932, basically. In other words, the bootloader collects the user code in the serial port and place it into the memory program.
> To call the bootloader built in hardware for other chips, let's say LPC901 is necessary 5 pulses, but the protocol is different that is why it is necessary to use a bridge which converts ISP commands into ICP(in chip programming).
> I noticed that many programmers use adapters for programming the different- pin-out chips which represent for the user a huge money spenditure. One can drive the programming pins to a connector header and just program any chip no matter both the amount of pins and the package. Well, it is a matter of good electric design.
>
> I hope this will help you.
>
> Omar Espinosa
>
>"Vijay M. Satra" wrote:
> in isp using three pulse entry on reset mode whether bootloader is required?
>Thanks and Regards,
>VIJAY
>
>“Smile... It increases your face value.”
>TEAM (Together Everyone Achieves More)
>
>---------------------------------
>Never miss a thing. Make Yahoo your homepage.
Thanks and Regards,
VIJAY
“Smile... It increases your face value.”
TEAM (Together Everyone Achieves More)
(You need to be a member of LPC900_users -- send a blank email to LPC900_users-subscribe@yahoogroups.com )
my question was if i erase the bootloader in isp then can i program this ic through three pulse entry ?
IN ICP methode i can erase the bootloader & reprogram it.
On Fri, 28 Mar 2008 Omar Espinosa wrote :
>Dear Vijay,
> I do not understand your question exactly.
> I developed a LPC programmer which is quite good for the entire family of LPC's chips .
> Thanks to Bootloader you can place your application code into the chip. To call the bootloader program you have to apply three pulses on the reset after power on, for LPC922 LPC932, basically. In other words, the bootloader collects the user code in the serial port and place it into the memory program.
> To call the bootloader built in hardware for other chips, let's say LPC901 is necessary 5 pulses, but the protocol is different that is why it is necessary to use a bridge which converts ISP commands into ICP(in chip programming).
> I noticed that many programmers use adapters for programming the different- pin-out chips which represent for the user a huge money spenditure. One can drive the programming pins to a connector header and just program any chip no matter both the amount of pins and the package. Well, it is a matter of good electric design.
>
> I hope this will help you.
>
> Omar Espinosa
>
>"Vijay M. Satra"
> in isp using three pulse entry on reset mode whether bootloader is required?
>Thanks and Regards,
>VIJAY
>
>“Smile... It increases your face value.”
>TEAM (Together Everyone Achieves More)
>
>---------------------------------
>Never miss a thing. Make Yahoo your homepage.
Thanks and Regards,
VIJAY
“Smile... It increases your face value.”
TEAM (Together Everyone Achieves More)
(You need to be a member of LPC900_users -- send a blank email to LPC900_users-subscribe@yahoogroups.com )