Why NRF51x GPIOTE input mode static current consumpts so high?

[Songplus]

As the datasheet showing The GPIOTE input mode consumpt upto 22uA ,it is inconceivable.I want use NRF51822 to design a ultra low power consumption production ,and use the GPIOTE INput even to wake up the system from sleep.So if use the GPIOTE input mode ,Does it mean that the system consumpts 22uA to monitor the input EVEN,or what the paramenter of the datasheet giving is wrong? Pleas give me a solution.

[Lars Sundell]

I was a inaccurate in my prevoius answer PrithviRaj, I mixed up the root cause for the numbers for nRF51 and nRF52. As Stefan correctly points out the current consumption for using GPIOTE in input mode in nRF51 is severe. The root case is that clock is requested, see table 33 in the Product specification, version 3.2. In nRF52 this need for clock is removed and we are left with the current caused by a larger part of the design being on.