SWRA478D February   2015  – January 2019 CC1310 , CC1312PSIP , CC1312R , CC1314R10 , CC1352P , CC1352P7 , CC1352R , CC2640 , CC2640R2F , CC2640R2F-Q1 , CC2642R , CC2642R-Q1 , CC2650 , CC2650MODA , CC2652P , CC2652R , CC2652R7 , CC2652RB , CC2652RSIP

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 Acronyms
  3. 2Standby
  4. 3Understanding Bluetooth Low Energy Power Metrics
  5. 4SimpleLink Bluetooth Low Energy Wireless MCUs
  6. 5Power Measurement Setup – Preparing the DUT
    1. 5.1 Requirements
    2. 5.2 Embedded Software
    3. 5.3 Hardware
      1. 5.3.1 CC26x2R LaunchPad
    4. 5.4 BTool (Optional)
  7. 6Measuring Power Consumption With a DC Power Analyzer
    1. 6.1 Test Setup
      1. 6.1.1 Analysis Software Setup
    2. 6.2 Measurement Using Scope
    3. 6.3 Analysis
      1. 6.3.1 Advertising Event
      2. 6.3.2 Connection Event
      3. 6.3.3 Power Consumption Calculator
  8. 7EnergyTrace
    1. 7.1 Modifying the rfPacketTX Example
  9. 8References
  10. 9Revision History

4 SimpleLink Bluetooth Low Energy Wireless MCUs

There are several Bluetooth Low Energy Solutions provided by Texas Instruments. These cover a wide range of solutions, from simple broadcaster only to advanced multiple-role Real Time Operating System (RTOS) featured solutions. An overview of TI's Bluetooth Low energy offering can be found here: http://www.ti.com/wireless-connectivity/simplelink-solutions/bluetooth-low-energy/products.html.

In the first part of this application report, measurements are done on the CC2652R [13], but everything discussed here regarding how to measure the current consumption is also valid for the other CC26xx and CC13xx devices.

The CC2652R is a Multi-Standard Wireless MCU providing a complete solution on a single chip. The application processor is an Arm®Cortex®-M4F and it is used for running the Bluetooth Low Energy Profiles along with any user defined functionality.

The RF core ensures that all timing regarding the Bluetooth Low Energy protocol is being configured and handled properly. An Arm Cortex-M0 is dedicated for the radio operations and runs the Bluetooth Low Energy Radio Firmware from its own dedicated ROM.

The CC2652R can be powered by two supply ranges, as presented in Table 4-1. To enable the 1.8 V system, both hardware and software modifications are required, which is documented in the CC13x2, CC26x2 SimpleLink™ Wireless MCU Technical Reference Manual [3]. For the CC13x0/CC26x0 device, see the CC13x0, CC26x0 SimpleLink™ Wireless MCU Technical Reference Manual [2].

Table 4-1 CC2652R Supply Voltage
Supply Voltage Internal DCDC Minimum Maximum
1.8 V System (External Regulator Mode) No 1.7 V 1.95 V
3.3 V System Optional 1.80 V 3.80 V

For more information about Supply Voltage, see the device-specific user's manual (Section 8).