SPRADL9 February   2025 CC1310

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
    1. 1.1 Sensor Controller in Building Automation
    2. 1.2 TI Devices
      1. 1.2.1 CC13x4 Wireless MCUs
      2. 1.2.2 CC26xx Wireless MCUs
  5. 2Sensor Controller
    1. 2.1 Features
    2. 2.2 Sensor Controller Power Modes
      1. 2.2.1 Active Mode
      2. 2.2.2 Low Power Mode
      3. 2.2.3 Standby Mode
      4. 2.2.4 Switching Between Power Modes
        1. 2.2.4.1 24MHz - Startup From Standby and Return to Standby Energy
        2. 2.2.4.2 2MHz - Startup From Standby and Return to Standby Energy
    3. 2.3 Power Measurement Setup
      1. 2.3.1 EnergyTrace™ Software
      2. 2.3.2 Software
      3. 2.3.3 Current Consumption Measurements
      4. 2.3.4 Hardware
  6. 3Building Automation Use-Cases and Techniques using Sensor Controller
    1. 3.1 PIR Motion Detection
      1. 3.1.1 PIR Traditional Signal-Chain
      2. 3.1.2 Capacitor-less Motion Detection Block Diagram
      3. 3.1.3 Digital Signal Processing
        1. 3.1.3.1 Hardware
        2. 3.1.3.2 Digital Signal Processing
    2. 3.2 Glass Break Detection
      1. 3.2.1 Low-Powered and Low-Cost Glass Break Block Diagram
    3. 3.3 Door and Window Sensor
    4. 3.4 Low-Power ADC
      1. 3.4.1 Code Implementation in Sensor Controller Studio
      2. 3.4.2 Measurements
    5. 3.5 Different Sensor Readings with BOOSTXL-ULPSENSE
      1. 3.5.1 Capacitive Touch
      2. 3.5.2 Analog Light Sensor
      3. 3.5.3 Potentiometer (0 to 200kΩ range)
      4. 3.5.4 Ultra-Low Power SPI Accelerometer
      5. 3.5.5 Reed Switch
  7. 4Summary
  8. 5References

2.2.3 Standby Mode

In Standby mode, the Sensor Controller is essentially inactive, but preserves the state (RAM retention) while minimizing power.

The term Standby is used for the mode where the complete MCU system is paused, but with a real time clock running in addition to having memory retention for the complete MCU RAM. This means that the MCU system can continue to operate where it was before standby was entered. Note that some MCU manufacturers are stating their Standby consumption with almost no RAM retention and this can mean that much more time and energy is spent to start operating again.

The CC13xx family is using TI designed 65nm process technology that offers ultra low leakage transistors. These transistors are used in modules where ultra low power is important – for example in the sensor controller MCU system and for most of the RAM blocks. This dedicated process technology can also offer low power even at elevated temperatures.

A key power-saving technique using this feature is sensor sequencing which enables a sensor at a designated time period before the sensor is needed for sampling allowing the Sensor Controller to stay in the lowest power state while the sensor boots and activate only when the sensor is ready.

Sensor Sequencing with One and Multiple Sensors Figure 2-5 Sensor Sequencing with One and Multiple Sensors

For more information, please check Sensor Sequencing Using the CC13x2 and CC26x2 Sensor Controller.