SDAA329 May   2026 CC2745R10-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
    1. 1.1 Applicable Devices
    2. 1.2 Required Software
  5. 2Quick Decision Guide: When To Use Crystal-less Mode?
    1. 2.1 Use LFOSC For
    2. 2.2 Tradeoffs
    3. 2.3 Use External Crystal (LFXT) When
  6. 3Internal Oscillator Operation
    1. 3.1 How It Works
    2. 3.2 The CC27xx Design: LFCAL Hardware
  7. 4Quick Start Guide
    1. 4.1 Open SysConfig
    2. 4.2 Select LFOSC Clock Source
    3. 4.3 Enable LFOSC Compensation
    4. 4.4 Add Compensation Profile
    5. 4.5 Set as Default Profile
    6. 4.6 Build and Test
  8. 5Configuration Details and Power Consumption
    1. 5.1 Understanding the Compensation Profile
    2. 5.2 Profile Examples
    3. 5.3 Power Policy
  9. 6Window Widening
    1. 6.1 The Challenge
    2. 6.2 The Design
  10. 7Hardware Design
    1. 7.1 What to Remove
    2. 7.2 LFXT Pins
    3. 7.3 HFXT Requirements
    4. 7.4 Board Bring-Up Checklist
  11. 8Summary
  12. 9References

4.4 Add Compensation Profile

Click Add under LFOSC Compensation Profiles to create a new profile. The compensation profile defines the operational parameters used by the LFCAL hardware to compute the calibration interval for the target application. Configure the profile fields as described in the following table:

Table 4-1 Compensation Profile Values
Parameter Typical Value Description
System Wakeup Interval (us) 1000000 (1s) Defined connection interval
System PPM Requirement 500ppm Required for Bluetooth Low Energy compliance
Temperature Gradient 1°C/s Expected worst-case temp change rate
Profile Configuration with 1ms Wakeup Interval Figure 4-3 Profile Configuration with 1ms Wakeup Interval