CC2650: Is it possible to completely switch off the Cortex-M0?

Andreas Winterholler

Part Number: CC2650

Hello everyone,

I would like to use the CC2650 as Sensor-Controller to read out different sensors at a given time and forward the data to a connected system (i.e. a PC for storage/calculation). Therefore I will use another SoC-RF-Module and thus do not need the Cortex-M0 inside the CC2650. The datasheet states that it is not possible to proram the M0 but I would like to know if it is possible to completely shut it down.

Alternatively I would appreciate an equal MCU without the RF-Part if there is such an solution. I mainly focus on the CC2650 due to the "SensorTag" and the low power sensor Controller.

Many Thanks ahead

Andreas

over 8 years ago

0 YiKai Chen over 8 years ago

Guru 735685 points

As I know, there's no switch to turn off Cortex-M0 in CC2650. However, you don't have to do anything to it if you don't use RF functions and it won't consume obvious power.

0 Andreas Winterholler over 8 years ago in reply to YiKai Chen

Prodigy 30 points

Hello YiKai,

thank you for the reply!

So there isn't a better MCU?

What about the RF pins - just put them on GND or would you pull them down with a resistor to reduce current if somehow the M0 wants to transmit.

Many Thanks Ahead

Andreas

0 YiKai Chen over 8 years ago in reply to Andreas Winterholler

Guru 735685 points

I think you can leave RF pin floating. Since you don't use RF, you don't have to worry somehow the M0 wants to transmit. If you are looking for low power MCU, I would also suggest you to study MSP432

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CC2650: Is it possible to completely switch off the Cortex-M0?