Forum: µC & Digital Electronics NXP Flash access time

Author: Sweety Water (Guest)
Posted on:

Rate this post
0 useful
not useful
I plan a project with the LPC1788. It has internal flash (512k) and SRAM 
Does anybody knows the access time for flash and for SRAM access? Is 
code executed in flash (XIP) as fast as code that is executed in SRAM?

The code size might exceed the internal RAM size. If XIP is slower than 
run in RAM and the code does not fit in internal SRAM I would have to 
consider external RAM additionaly.

What is your experience?

Author: Lutz (Guest)
Posted on:

Rate this post
0 useful
not useful
No experience, but have a look at 

There can't be a general rule because of the pipeline, the individual 
code executed and so on.
In the UM there is some information about clockrate, waitstates and so 

The LPCOpen forum is the right place to go on.


Entering an e-mail address is optional. If you want to receive reply notifications by e-mail, please log in.

Rules — please read before posting

  • Post long source code as attachment, not in the text
  • Posting advertisements is forbidden.

Formatting options

  • [c]C code[/c]
  • [avrasm]AVR assembler code[/avrasm]
  • [code]code in other languages, ASCII drawings[/code]
  • [math]formula (LaTeX syntax)[/math]

Bild automatisch verkleinern, falls nötig
Note: the original post is older than 6 months. Please don't ask any new questions in this thread, but start a new one.