SPRUJ15B November   2021  – October 2022

 

  1.   F2800137 controlCARD Information Guide
  2.   Trademarks
  3. 1Introduction
  4. 2Hardware Quick Setup Guide
    1. 2.1 Configuration 1: Standalone
    2. 2.2 Configuration 2: External 5 V Supply
  5. 3Errata
    1. 3.1 Warnings, Notes, and Errata
    2. 3.2 Warnings About Specific controlCARD Revisions
  6. 4Getting Familiar with the controlCARD
    1. 4.1 F2800137 controlCARD Features
    2. 4.2 Assumed Operating Conditions
    3. 4.3 Power Supply Requirements
      1. 4.3.1 External Power Supply or Accessory Requirements
    4. 4.4 Using the controlCARD
    5. 4.5 Experimentation Software
  7. 5Special Notes
    1. 5.1 XDS110 Emulator and SCI (UART) Connectivity
    2. 5.2 Clocking Methodology
    3. 5.3 Evaluation of the Analog-to-Digital Converters (ADCs)
  8. 6Hardware References
  9. 7Revision History

3.1 Warnings, Notes, and Errata

External power supply is needed when power requirements exceed USB limits

The F2800137 evaluation kit ships with a USB cable and is designed to be powered by way of USB. However, in extreme cases the board/controlCARD can require more power than the 5 V @ 500 mA (USB 3.0 - 900 mA) that a computer USB port can provide. This is especially true when additional circuitry has been added to the TMDSHSECDOCK. In such cases, it is recommended to use an external 5 V power supply (2.5 mm inner diameter x 5.5 mm outer diameter) and plug the power supply into J1 on the TMDSHSECDOCK. A compatible supply such as:
  • CUI SMM6-5-K-P6 + SMI-US-5

5-V power supply instability can lead to device resets

The 5-V rail on the TMDSCNCD280039C controlCARD can be powered from an on-board USB connector or from a baseboard like the TMDSHSECDOCK. A switch device on the controlCARD automatically selects the 5-V input power source for the controlCARD without the need for user configuration.

A loss of power or glitching on the baseboard 5-V power source can cause the automatic switch to disconnect from both power sources for several milliseconds. This momentary loss of power can cause a brownout condition on the MCU, triggering a device reset. To avoid this condition, make sure that the baseboard power supply remains at 0 V or 5 V during code execution.