SWRA625B August   2018  – February 2020 CC1352P , CC1352R , CC2652P , CC2652R , CC2652R7 , CC2652RSIP

 

  1.   Z-Stack End Device Power Consumption Measurement With the SimpleLink Wireless MCU Family
    1.     Trademarks
    2. 1 Introduction
    3. 2 Abbreviations and Acronyms
    4. 3 System Overview
      1. 3.1 Hardware:LAUNCHXL-CC1352P-2, LAUNCHXL-CC26X2R1
      2. 3.2 Software: Z-Stack
        1. 3.2.1 Z-Stack Development Environment
    5. 4 Measurement Setup
      1. 4.1 Instrumentation
      2. 4.2 Software Setup
        1. 4.2.1 Programming
        2. 4.2.2 ZC Node
        3. 4.2.3 ZED Node
        4. 4.2.4 GPD Node
        5. 4.2.5 Commissioning
    6. 5 Measurements
      1. 5.1 Measurements for Regular ZED
      2. 5.2 Measurements for Green Power Device
      3. 5.3 Measurements Using the EnergyTrace Tool
    7. 6 Application to a Practical Use Case
      1. 6.1 Estimation for Usage Scenario
        1. 6.1.1 Usage Scenario 1
      2. 6.2 Usage Scenario 2
    8. 7 Batteryless Green Power Device
    9. 8 Summary
    10. 9 References
  2.   Revision History

1 Introduction

The CC2652R device from Texas Instruments™ is the ideal System-on-Chip for high-performance Zigbee applications, addressing many product specifications from a low-power standpoint. The CC2652R combines a powerful 48 MHz Arm®Cortex®-M4F CPU with up to 80KB of RAM and 352KB of on-chip flash. With a dedicated Radio Controller handling low-level RF protocol commands stored in ROM, it can handle complex network stacks ensuring ultra-low power and great flexibility.

In the world of IoT, battery life is tremendously valued by customers, cutting down on bill of materials and battery replacement costs, while enabling easy maintenance and product convenience. Therefore, current consumption of devices inside a connected network must have their current consumption tightly controlled. The CC2652R is designed with the lowest power performance in sleep mode, active mode, and during sensor and data processing.

When range is an important consideration for an application, Texas Instruments offers the CC1352P device, which contains a +20-dBm integrated high-power amplifier with a best-in-class efficiency for long range applications. The CC1352P is a multiprotocol Sub-1 and 2.4-GHz with the same powerful system, offering the ability for a high-performance, long range Zigbee device.

This application report references examples from Z-Stack 3.3.1, which is based on the Zigbee 3.0 profile. Included in Z-Stack 3.3.1 are Green Power examples that allow for powerful, battery-less Zigbee products, by taking advantage of common energy harvesting techniques. In Zigbee 3.0, every device with routing capability is required to use Green Power Basic Proxy functionality, which mandates all routing devices to forward all Green Power Data Frames (GPDF), making it much easier to have Green Power Devices (GPD) inside the Zigbee network. For more details about GPD usage, see the Green Power Device Application Overview section in the Z-Stack User's Guide[6]. Z-Stack comes packaged as part of the SimpleLink CC13X2/CC26X2 SDK, which is designed for simplified development within one environment using industry standard APIs, TI Drivers, and TI RTOS to provide a robust foundation for application development. The version used in this report's test cases is v3.10.

The measurement setup in this application report consists of a Zigbee End Device (ZED) and a Zigbee Coordinator (ZC). The ZED can also be connected to a Zigbee Router (ZR) instead of a ZC. The ZED polls its parent periodically for data and in between polls, the ZED will go to sleep (using Standby Mode) to save power. For measuring Green Power, the setup consists of a GPD and a ZC application acting as the Green Power Sink (GPS).

Section 3 describes which hardware and software was used for the measurement setup, and is described in Section 4. The obtained results are shown and discussed in Section 5.

For similar measurements on the CC2538, see [8].

Note that there are many factors that influence the overall power consumption and that the results presented in this document should only be regarded as indicative for what is possible to achieve in systems with similar hardware.

For detailed information about the CC1352P and CC2652R, see the CC1352P product page [1] or the CC2652R product page [2]. More details regarding usage, examples, and API's on Z-Stack 3.3.0 can be found in the Z-Stack User's Guide[6].