LPC11U68 ADCs 2Ms/s

[bobbann]

LPC11U68 ADCs claim to run at 2Ms/s, but I am seeing conversion times of >60 clock cycles at 48MHz (<1Ms/s). I'm running a SeqA with a single channel in Burst mode, with an IRQ handler in RAM reading results into a simple buffer. Can anyone point me at a code sample which can achieve the 2Ms/s. I've checked the clock divider is 0 and Vdda is 3.3V.

Cheers, Bob.

EDIT :

  I solved this issue using DMA. 2MHz was then achievable.

[kerryzhou]

Hi Bob,

    Thank you for your problem solutions sharing!

Have a great day,
Jingjing

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