How do lpc4330 use jtag to burn the program to flash?

[cyc583723081]

Lpc4330 has no in-chip flash, how do you burn the program to the outside flash through jtag under keil?

[jeremyzhou · Accepted solution]

Hi ,

Thank you for your interest in NXP Semiconductor products and 

for the opportunity to serve you.

You can program the external flash via the the general process as the Fig 1 illustrates.

Fig 1

Have a great day,
TIC

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[cyc583723081]

hi,

I now have a new problem. My program can download the outer flash of lpc4330. If the hardware pins are not configured, the program cannot be started.Because these pins have other functions that I need to use, such as the address line function of the external memory.Then I have to configure these pins to start up the program by using a dialing switch.Then wait for the program to start, I will pull these pins by the dial code switch, my external memory's address line function is available, this will be very troublesome.I would like to use OPT to program the way to start the program, without using the dial switch.But the question is, how can I make a burn that will both program and burn applications to external flash.Still, I can only run the OPT program first, and then burn the application, so that when the application starts it doesn't need a dialing switch?

[jeremyzhou]

Hi ,

I'd better create a new thread for the new question, I was wonder if you can choose the larger size, as the statement is a bit hard to read.

Thanks for your cooperation.
Have a great day,
TIC

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Note: If this post answers your question, please click the Correct Answer button. Thank you!
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[cyc583723081]

thank you ! The problem has been solved.