SDAA329 May   2026 CC2744R7-Q1 , CC2745R10-Q1 , CC2745R7-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

6 Window Widening

In a Bluetooth Low Energy (BLE) connection, the Central and Peripheral devices exchange data at precise intervals defined as connection events. The timing of each connection event is governed by the connection interval parameter during the connection setup procedure, as defined in the Bluetooth Core Specification. Between consecutive connection events, both devices enter a low-power standby state to minimize current consumption.