SWRA640G December   2018  – September 2022 CC1310 , CC1312R , CC1314R10 , CC1350 , CC1352P , CC1352R , CC1354P10 , CC1354R10 , CC2620 , CC2630 , CC2640 , CC2640R2F , CC2640R2F-Q1 , CC2642R , CC2642R-Q1 , CC2650 , CC2652P , CC2652R , CC2652R7 , CC2652RB , CC2652RSIP , CC2662R-Q1 , CC2674P10 , CC2674R10

 

  1.   Trademarks
  2.   CC13xx/CC26xx Hardware Configuration and PCB Design Considerations
  3. 1 Reference Design
    1. 1.1 Sub-1 GHz LaunchPads
      1. 1.1.1 LAUNCHXL-CC1310
      2. 1.1.2 LAUNCHXL-CC1312R
    2. 1.2 2.4 GHz LaunchPads
      1. 1.2.1 LAUNCHXL-CC2640R2
      2. 1.2.2 LAUNCHXL-CC26x2R
    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
    4. 1.4 Reference Design Overview
  4. 2 Front-End Configurations
    1. 2.1 CC13xx/CC26xx
    2. 2.2 Configuring Front-End Mode
    3. 2.3 CC13xx Single-Ended Mode
      1. 2.3.1 Single-Ended RX/TX
      2. 2.3.2 Single-Ended TX Only
      3. 2.3.3 Single-Ended RX Only
      4. 2.3.4 Single-Ended 2.4 GHz
    4. 2.4 CC26xx
  5. 3 Schematic
    1. 3.1 Schematic Overview
      1. 3.1.1 24/48 MHz Crystal
      2. 3.1.2 32.768 kHz 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 CC26x2/CC13x2 AUX Pins
      2. 3.3.2 CC26x0/CC13x0 AUX Pins
    4. 3.4 JTAG Pins
  6. 4 PCB Layout
    1. 4.1  Board Stack-Up
    2. 4.2  Balun
    3. 4.3  LC Filter
    4. 4.4  Decoupling Capacitors
    5. 4.5  Placement of Crystal Load Capacitors
    6. 4.6  Current Return Path
    7. 4.7  DC/DC Regulator
    8. 4.8  Antenna Matching Components
    9. 4.9  Transmission Lines
    10. 4.10 Electromagnetic Simulation
  7. 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: 433-510 MHz and 2.4 GHz
  8. 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
  9. 7 TCXO Support
    1. 7.1 Hardware
    2. 7.2 Software
    3. 7.3 Example: Usage of TCXO on CC1312R Launchpad
  10. 8 Integrated Passive Component (IPC)
  11. 9 Optimum Load Impedance
  12. 10PA Table
  13. 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
  14. 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 Can Not 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
  15. 13References
  16. 14Revision History

1.4 Reference Design Overview

When designing a custom board, the reference design should be followed as much as possible. Not all combinations of CC13xx/CC26xx devices and ISM bands are covered by a 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.

As an example, if the application requires operation in the 433 MHz band, but does not need 2.4 GHz operation or +20 dBm 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 BandSupported DeviceReference DesignComment
433 MHz
470 MHz
510 MHz		CC1310CC13xxEM-7XD-4251
CC1312RLAUNCHXL-CC1352P-4Use the 433 MHz front end from the CC1352P reference design
779 MHz
868 MHz
915 MHz		CC1310LAUNCHXL-CC1310For other reference designs, see the following link
CC1312RLAUNCHXL-CC1312R1
2.4 GHzCC26x0CC2650EM-7IDCharacterization board for CC26x0. Using the 7x7 QFN in combination with differential RF, internal bias.
CC2650EM-5XDCharacterization board for CC26x0. Using the 5x5 QFN in combination with differential RF, external bias.
CC2650EM-4XSCharacterization board for CC26x0. Using the 4x4 QFN in combination with single ended RF, internal bias.
CC2650EM-4XS_Ext_RegCharacterization board for CC26x0. Using the 4x4 QFN in External Regulator mode configuration.
CC2640R2LAUNCHXL-CC2640R2Evaluation and development platform.
CC2640EM-CXSCharacterization board for the CC2640R2F WCSP.
CC2642R
CC2652R		LAUNCHXL-CC26x2R1Evaluation and development platform.
CC26x2REM-7IDCharacterization board.
Multi bandCC1350LAUNCHXL-CC1350-4
  • 433 MHz
  • 2.4 GHz
CC1352PLAUNCHXL-CC1352P-4
CC1350LAUNCHXL-CC1350
  • 868 / 915 MHz
  • 2.4 GHz
CC1352RLAUNCHXL-CC1352R1
CC1352REM-XD7793-XD24
CC1352PLAUNCHXL-CC1352P1
  • 868 / 915 MHz @ 20 dBm
  • 2.4 GHz @ 5 dBm
CC1352PEM-XD7793-XD24-PA9093
LAUNCHXL-CC1352P-2
  • 868 / 915 MHz @ 14 dBm
  • 2.4 GHz @ 20 dBm
CC1352PEM-XD7793-XD24-PA24