ADC pin shared with DAC pin, howto use ADC pin?

[lpcware]

Content originally posted in LPCWare by Koen on Wed May 01 05:33:24 MST 2013

We use the LPC1837 in LQFP144 package. It has a pin named "ADC0_0/ADC1_0/DAC".

We want to use the DAC on pin P4_4 and the ADC on pin "ADC0_0/ADC1_0/DAC".

The datasheet states that the ADC input channel 0 is shared between ADC0/1 and DAC.

Does this means that it is not possible to use the ADC function of pin "ADC0_0/ADC1_0/DAC" when I enable the DAC for pin P4_4?

Or is there a register which can select which function will be used on pin "ADC0_0/ADC1_0/DAC"?

[lpcware]

Content originally posted in LPCWare by briching on Wed Dec 02 16:28:26 MST 2015
This one bit me too.  I designed in support for the DAC on p4_4 expecting to use ADC0 (without the DAC) on the analog input.  The manual is not clear at all that these two functions are exclusive.  Suggest the manual be improved to point this out.

[lpcware]

Content originally posted in LPCWare by Koen on Mon May 06 04:38:20 MST 2013

Repost

[lpcware]

Content originally posted in LPCWare by Koen on Mon May 06 04:37:10 MST 2013

We have had contact with NXP.

The answer is that it is not possible to use the DAC simultanious with ADC channel 0.