Flash Magic Forum

In-System Programming Support => LPC9xx/LPC9xxx => Topic started by: Alex on February 25, 2004, 12:37:07 am

Title: Application Note
Post by: Alex on February 25, 2004, 12:37:07 am
HI @ All

I have a small ask ! :puzzled:

I'll use the Philips
Title: Re: Application Note
Post by: Andy Ayre on February 25, 2004, 07:00:56 am
Well for an overview, it is simply:

Serial port -> RS232 transciever -> RxD pin
Serial port <- RS232 transceiver <- TxD pin

If this isn't want you want (and I don't think it is) then please explain further what you are looking for.

Title: Re: Application Note
Post by: Alex on February 26, 2004, 12:49:48 am
mmhh.. no

I want to know what pin of the port control the Resest of the
Title: Re: Application Note
Post by: Andy Ayre on February 27, 2004, 08:54:09 am
If the device is configured to use the on chip reset circuit, then there isn't a reset pin as such. If you are referring to the pulses to enter ISP mode, then they are applied to the RST pin.

Title: Re: Application Note
Post by: Alex on March 01, 2004, 10:30:29 pm
Can your programm "Flashmagic" controll the res Pin of the
Title: Re: Application Note
Post by: Andy Ayre on March 02, 2004, 06:35:50 am
Yes. You need to build a special circuit between the RS232 transciever and the VCC and RST pins of the device. It must match the circuit found on the Keil MCB900 board. If you look at the application note on the Flash Magic web page titled "ISP Entry Using COM Port Handshaking Signals", it will give you the circuit diagram and a description of the circuit.

Title: Re: Application Note
Post by: alex on March 25, 2004, 05:18:34 am
Fine THX 4 Help ....
:)

:cheers:

Title: Re: Application Note
Post by: sylvester on September 05, 2005, 09:23:59 pm
i want to make use of the circuit diagram and its elaborations
Title: Re: Application Note
Post by: Andy Ayre on September 05, 2005, 09:28:45 pm
Then buy it or build it.