SWRA578B October   2017  – April 2020 CC1312PSIP , CC1312R , CC1314R10 , CC1352P , CC1352P7 , CC1352R , CC2620 , CC2630 , CC2640 , CC2640R2F-Q1 , CC2642R , CC2642R-Q1 , CC2650MODA , CC2652P , CC2652R , CC2652R7 , CC2652RB , CC2652RSIP

 

  1.   Ultra-Low Power Sensing Applications With CC13x2/CC26x2
    1.     Trademarks
    2. 1 Overview
    3. 2 Measurement Conditions
      1. 2.1 Software
      2. 2.2 Hardware
    4. 3 Measurements
      1. 3.1 BOOSTXL-ULPSENSE
        1. 3.1.1 Analog Light Sensor
        2. 3.1.2 Capacitive Touch
        3. 3.1.3 LC Flow Meter
        4. 3.1.4 Potentiometer
        5. 3.1.5 Reed Switch
        6. 3.1.6 SPI Accelerometer
      2. 3.2 LPSTK-CC1352R
        1. 3.2.1 I2C Light Sensor
        2. 3.2.2 I2C Temperature and Humidity Sensor
        3. 3.2.3 SPI Accelerometer
        4. 3.2.4 Hall Effect Sensor
      3. 3.3 Comparison with System CPU
        1. 3.3.1 4 MHz SPI Transfer
        2. 3.3.2 1 MHz SPI Transfer
        3. 3.3.3 Wake-up and Sleep
    5. 4 Summary
    6. 5 References
  2.   A Creating the comparison examples
    1.     A.1 SPI Transfer – Sensor Controller
    2.     A.2 SPI Transfer – System CPU
    3.     A.3 Wake Up and Sleep – Sensor Controller
    4.     A.4 Wake up and Sleep – System CPU
  3.   Revision History

3.3.2 1 MHz SPI Transfer

In the SPI transfer test, the device wakes up and sends 18 bytes of data over SPI and immediately goes back to sleep mode.

Average Current Consumption Unit
1 wake-up per second 10 wake-ups per second 100 wake-ups per second
Sensor Controller low-powermode 1.1 1.2 3.2 µA
System CPU 3.5 23.7 218.6 µA
4_3_2 SPI Low-Power.pngFigure 18. SPI Transfer: One SPI Transmit in Low-Power Mode