TIDUFB9 April   2025

 

  1.   1
  2.   Description
  3.   Resources
  4.   Features
  5.   Applications
  6.   6
  7. 1System Description
  8. 2System Overview
    1. 2.1 Block Diagram
    2. 2.2 Design Considerations
      1. 2.2.1 Reference Design Features
      2. 2.2.2 Switch Settings
    3. 2.3 Highlighted Products
      1. 2.3.1 IWRL6432W
      2. 2.3.2 Crystal
      3. 2.3.3 TPS6285020M – 1.8V DC/DC Regulator
      4. 2.3.4 QSPI Flash Memory
  9. 3System Design Theory
    1. 3.1 Antenna
      1. 3.1.1 Range and Phase Compensation
      2. 3.1.2 Chirp Configuration
    2. 3.2 PCB
  10. 4Hardware, Software, Testing Requirements, and Test Results
    1. 4.1 Hardware Requirements
      1. 4.1.1 Reference Design
      2. 4.1.2 Small Form-Factor Reference Design
    2. 4.2 Software Requirements
    3. 4.3 Test Setup
    4. 4.4 Test Results
      1. 4.4.1 Human Detection at 15 Meters in Boresight
      2. 4.4.2 Antenna Radiation Plots
      3. 4.4.3 Angle Estimation Accuracy
  11. 5Design and Documentation Support
    1. 5.1 Design Files
      1. 5.1.1 Schematics
      2. 5.1.2 BOM
    2. 5.2 Tools and Software
    3. 5.3 Documentation Support
    4. 5.4 Support Resources
    5. 5.5 Trademarks
  12. 6About the Authors

2.3.4 QSPI Flash Memory

The reference design uses the Macronix® MX25R1635FZUIH0 device; a low-cost and low-power 16Mbit flash memory. The flash supports a wide range of input voltage of 1.65V to 3.6V to support both of the 3.3V and 1.8V IO voltages of the device.

Because the device works in 1.8V single-rail power topology in this reference design, the Macronix® MX25U1632FZUI02, operating in 1.65V to 2.0V can also be used.

Note: See the Flash Variants Supported by the mmWave Sensor application report for the flash-variant compatibility.