BlueNRG M2SA - same pins, different functions

[stevang]

Hello,

Looking at the documentation of the M2SA module, I noticed that the function of the same pins (21, 22, and 23) differs between the datasheet and the application note. Does anyone know the exact function of these pins?

M2SA - application noteM2SA - datasheet pinout

[STTwo-32]

Hello @stevang 

In fact, everything is fine since on the DS13053 it does not mention the real name of the pins. It just says that it should stay unconnected for any design (or maybe grounded for the case of the pin 21) since NC means Not Connected. But on the UM2071, it says the real name of the functions and keep them unconnected or grounded as mentioned on the datasheet. 

Best Regards.

STTwo-32