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CC2640R2F: Sensor Controller Wake-Up Time

Jeremy Hale
Prodigy 100 points
Part Number: CC2640R2F
Other Parts Discussed in Thread: CC2640

I found in this thread  that the wakeup time for the sensor controller is about 100 us.

I just wanted to confirm this is correct as it's an older thread.

I want to use the Sensor Controller ADC so sample continuously at 6 kHz. But with a 100 us wake-up time, it seems that it isn't possible to sleep between ADC samples. Since the Sensor Controller uses 500-700 uA, the slow wakeup time precludes me from using the cc2640 in my design.

Thanks.

  • 0
    TI__Guru 56590 points
    Hello Jeremy,
    You are correct. In this case you do not have time to enter standby. You can keep the sensor controller alive and use the aux timer 0 to trigger ADC conversions (refer to the ADC Data Streamer Example). This will usually still be lower power compared to using the main application processor (TI-RTOS driver).