LPC5500 flash wait states.

[arimendes]

Hi,

I would like to know why the LPC5500's flash is so slow, 12 cycles of waiting for 150MHZ, causing the performance of code running in flash to drop to half compared to SRAMX.

On other modern microcontrollers, it typically only takes 3 wait cycles for 150MHZ and flash performance is pretty much the same as RAM.

Does NXP intend to improve flash for future LPC5500 series? Especially for LPC553x.

[ZhangJennie]

I haven't got Flash wait cycle changing data of LPC553x .

LPC553x is not released. The concrete spec will only be announced on release day.

Anyway, I will feed back your concern to system team.

Thanks for sharing your experience.

Best Regards

Jun Zhang

[victorzh]

Could you please update us about the wait state for Flash memory in LPC553x devices? Documentation does not define this critical parameter.

 

[ZhangJennie]

Hi @victorzh 

This is a very old post of 3 years ago.

Please create a new thread for this topic, we will check.

Many thanks for your cooperation.

Jun Zhang