Dedicated Pins in MK22FN512VLL12

[prasannanaik]

Hi,

   I am using MK22FN512VLL12 in a control application where i have a lot of interfaces. I am facing shortage of GPIOs. While going through datasheet, i found that the following pins are dedicated for single purpose only ( They can't be used as even GPIOs)

Sr. no	PIN no	Description
1	10	USB0_DP
2	11	USB0_DM
3	12	VOUT33
4	13	VREGIN
5	14	ADC0_ DP1
6	15	ADC0_ DM1
7	16	ADC1_ DP1/ ADC0_ DP2
8	17	ADC1_ DM1/ ADC0_ DM2
9	18	ADC0_ DP0/ ADC1_ DP3
10	19	ADC0_ DM0/ ADC1_ DM3
11	20	ADC1_ DP0/ ADC0_ DP3
12	21	ADC1_ DM0/ ADC0_ DM3

Please help in resolving following queries:

1) Can ADC DP/DM lines be used for single ended analog measurement?

2) Can all/any of these pins be used as GPIOs?

Thanks and best regards,

Prasanna

[mjbcswitzerland]

Hi

The ADC inputs with "P" and "M" can be used either as single ended inputs or, when paired, as differential inputs to a single channel.

None of these pins can be used as GPIO since they are dedicated to their analogue functions.

Regards

Mark

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