SWRA640H December   2018  – May 2024 CC1310 , CC1312R , CC1314R10 , CC1350 , CC1352P , CC1352R , CC1354P10 , CC1354R10 , CC2620 , CC2630 , CC2640 , CC2640R2F , CC2640R2F-Q1 , CC2642R , CC2642R-Q1 , CC2650 , CC2652P , CC2652R , CC2652R7 , CC2652RB , CC2652RSIP , CC2674P10 , CC2674R10

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1 Reference Design
    1. 1.1 Sub-1GHz LaunchPads
      1. 1.1.1 LAUNCHXL-CC1310
      2. 1.1.2 LAUNCHXL-CC1312R
    2. 1.2 2.4GHz LaunchPads
      1. 1.2.1 LAUNCHXL-CC2640R2
      2. 1.2.2 LAUNCHXL-CC26x2R
      3. 1.2.3 LP-CC26x1
    3. 1.3 Dual-Band LaunchPads
      1. 1.3.1 LAUNCHXL-CC1350EU/US
      2. 1.3.2 LAUNCHXL-CC1350-4
      3. 1.3.3 LAUNCHXL-CC1352R
      4. 1.3.4 LAUNCHXL-CC1352P1
      5. 1.3.5 LAUNCHXL-CC1352P-2
      6. 1.3.6 LAUNCHXL-CC1352P-4
      7. 1.3.7 LP-CC1352P7-1
      8. 1.3.8 LP-CC1352P7-4
      9. 1.3.9 LP-EM-CC1354P10-6
    4. 1.4 Reference Design Overview
  5. 2 Front-End Configurations
    1. 2.1 Overview of Front-end Configurations
    2. 2.2 Configuring the Front-End Mode
    3. 2.3 CC13xx Single-Ended Mode
      1. 2.3.1 Single-Ended Modes
      2. 2.3.2 Single-Ended TX-Only
      3. 2.3.3 Single-Ended RX-Only
      4. 2.3.4 Single-Ended Modes - 2.4GHz
    4. 2.4 CC26xx Single-End Mode
  6. 3 Schematic
    1. 3.1 Schematic Overview
      1. 3.1.1 24/48MHz Crystal
      2. 3.1.2 32.768kHz Crystal
      3. 3.1.3 Balun
      4. 3.1.4 Filter
      5. 3.1.5 RX_TX Pin
      6. 3.1.6 Decoupling Capacitors
      7. 3.1.7 Antenna Components
      8. 3.1.8 RF Shield
      9. 3.1.9 I/O Pins Drive Strength
    2. 3.2 Bootloader Pins
    3. 3.3 AUX Pins
      1. 3.3.1 Reference
      2. 3.3.2 CC26x2/CC13x2 AUX Pins
      3. 3.3.3 CC26x0/CC13x0 AUX Pins
    4. 3.4 JTAG Pins
  7. 4 PCB Layout
    1. 4.1  Board Stack-Up
    2. 4.2  Balun - Sub-1GHz
    3. 4.3  Balun - 2.4GHz
      1. 4.3.1 Recommended Layout and Considerations for 20dBm
    4. 4.4  LC Filter
    5. 4.5  Decoupling Capacitors
    6. 4.6  Placement of Crystal Load Capacitors
    7. 4.7  Current Return Path
    8. 4.8  DC/DC Regulator
    9. 4.9  Antenna Matching Components
    10. 4.10 Transmission Lines
    11. 4.11 Electromagnetic Simulation
  8. 5 Antenna
    1. 5.1 Single-Band Antenna
    2. 5.2 Dual-Band Antenna
      1. 5.2.1 Dual-Band Antenna Match Example: 863-928 MHz and 2.4 GHz
      2. 5.2.2 Dual-Band Antenna Match: 433-510MHz and 2.4GHz
  9. 6 Crystal Tuning
    1. 6.1 CC13xx/CC26xx Crystal Oscillators
    2. 6.2 Crystal Selection
    3. 6.3 Tuning the LF Crystal Oscillator
    4. 6.4 Tuning the HF Oscillator
  10. 7 TCXO Support
    1. 7.1 Hardware
    2. 7.2 Software
    3. 7.3 Example: Usage of TCXO on CC1312R Launchpad
  11. 8 Integrated Passive Component (IPC)
  12. 9 Optimum Load Impedance
  13. 10PA Table
  14. 11Power Supply Configuration
    1. 11.1 Introduction
    2. 11.2 DC/DC Converter Mode
    3. 11.3 Global LDO Mode
    4. 11.4 External Regulator Mode
  15. 12Board Bring-Up
    1. 12.1 Power On
    2. 12.2 RF Test: SmartRF Studio
    3. 12.3 RF Test: Conducted Measurements
      1. 12.3.1 Sensitivity
      2. 12.3.2 Output Power
    4. 12.4 Software Bring-Up
    5. 12.5 Hardware Troubleshooting
      1. 12.5.1 No Link: RF Settings
      2. 12.5.2 No Link: Frequency Offset
      3. 12.5.3 Poor Link: Antenna
      4. 12.5.4 Bluetooth Low Energy: Device Does Advertising But Cannot Connect
      5. 12.5.5 Poor Sensitivity: DCDC Layout
      6. 12.5.6 Poor Sensitivity: Background noise
      7. 12.5.7 High Sleep Power Consumption
  16. 13References
  17. 14Revision History

1.4 Reference Design Overview

When designing a custom board the reference design should be closely followed. Not all combinations of CC13xx/CC26xx devices and ISM bands are covered by any one reference design, but it is possible to use an RF front-end from one reference design and combine it with a compatible CC13xx/CC26xx device. Table 1-1 shows which CC13xx/CC26xx reference design to use for a given ISM band.

If the application requires operation in the 433MHz band, but does not need 2.4GHz operation or +20dBm transmit power, the CC1312R device can be used instead of CC1352P. Then, the LAUNCHXL-CC1352P-4 reference design should be followed, but only the RF front-end on the SUB-1_GHZ_RF_P/N pins is required.

Table 1-1 CC13xx/CC26xx Reference Design Overview
Frequency Band Supported Device Reference Design Comment
433MHz
470MHz
510MHz		 CC1310 CC13xxEM-7XD-4251
CC1312R LAUNCHXL-CC1352P-4 Use the 433MHz front-end from the CC1352P reference design
779MHz
868MHz
915MHz		 CC1310 LAUNCHXL-CC1310 For other reference designs, see the following link
CC1311R3 LP-CC1311R3
CC1311P3 LP-CC1311P3
CC1312R LAUNCHXL-CC1312R1
2.4GHz CC26x0 CC2650EM-7ID Characterization board for CC26x0. Using the 7x7 QFN in combination with differential RF, internal bias.
CC2650EM-5XD Characterization board for CC26x0. Using the 5x5 QFN in combination with differential RF, external bias.
CC2650EM-4XS Characterization board for CC26x0. Using the 4x4 QFN in combination with single ended RF, internal bias.
CC2650EM-4XS_Ext_Reg Characterization board for CC26x0. Using the 4x4 QFN in External Regulator mode configuration.
CC2640R2 LAUNCHXL-CC2640R2 Evaluation and development platform.
CC2640EM-CXS Characterization board for the CC2640R2F WCSP.
CC2642R
CC2652R		 LAUNCHXL-CC26x2R1 Evaluation and development platform.
CC26x2REM-7ID Characterization board.
Multi-band CC1350 LAUNCHXL-CC1350-4
  • 433MHz
  • 2.4GHz
CC1352P LAUNCHXL-CC1352P-4
CC1350 LAUNCHXL-CC1350
  • 868/915MHz
  • 2.4GHz
CC1352R LAUNCHXL-CC1352R1
CC1352REM-XD7793-XD24
CC1352P LAUNCHXL-CC1352P1
  • 868/915MHz at 20dBm
  • 2.4GHz at 5dBm
CC1352PEM-XD7793-XD24-PA9093
LAUNCHXL-CC1352P-2
  • 868/915MHz at 14dBm
  • 2.4GHz at 20dBm
CC1352PEM-XD7793-XD24-PA24
CC1354P10 LP-EM-CC1354P10-6
  • 868/915MHz at 14dBm
  • 2.4GHz at 10/20dBm