SLAU664B February   2016  – August 2017

 

  1.   MSP430FR2311 LaunchPad™ Development Kit (MSP‑EXP430FR2311)
    1.     Trademarks
    2. 1 Getting Started
      1. 1.1 Introduction
      2. 1.2 Key Features
      3. 1.3 What's Included
        1. 1.3.1 Kit Contents
        2. 1.3.2 Software Examples
      4. 1.4 First Steps: Out-of-Box Experience
        1. 1.4.1 Connecting to the Computer
        2. 1.4.2 Running the Out-of-Box Demo
      5. 1.5 Next Steps: Looking Into the Provided Code
    3. 2 Hardware
      1. 2.1 Block Diagram
      2. 2.2 Hardware Features
        1. 2.2.1 MSP430FR2311 MCU
        2. 2.2.2 eZ-FET Onboard Emulator With EnergyTrace™ Software
        3. 2.2.3 Emulator Connection: Isolation Jumper Block
        4. 2.2.4 Application (or "Backchannel") UART
        5. 2.2.5 Special Features
          1. 2.2.5.1 Smart Analog Combo (SAC)
      3. 2.3 Power
        1. 2.3.1 eZ-FET USB Power
        2. 2.3.2 BoosterPack Plug-In-Module and External Power Supply
      4. 2.4 Measure MSP430 MCU Current Draw
      5. 2.5 Clocking
      6. 2.6 Using the eZ-FET Emulator With a Different Target
      7. 2.7 BoosterPack Plug-in Module Pinout
      8. 2.8 Design Files
        1. 2.8.1 Hardware
        2. 2.8.2 Software
      9. 2.9 Hardware Change log
    4. 3 Software Examples
      1. 3.1 Out-of-Box Software Example
        1. 3.1.1 Source File Structure
        2. 3.1.2 Power Measurement
      2. 3.2 Blink LED Example
        1. 3.2.1 Source File Structure
      3. 3.3 Software I2C Example
        1. 3.3.1 Source File Structure
    5. 4 Resources
      1. 4.1 Integrated Development Environments
        1. 4.1.1 TI Cloud Development Tools
          1. 4.1.1.1 TI Resource Explorer Cloud
          2. 4.1.1.2 Code Composer Studio Cloud
        2. 4.1.2 Code Composer Studio IDE
        3. 4.1.3 IAR Embedded Workbench for Texas Instruments MSP430
        4. 4.1.4 Energia
      2. 4.2 LaunchPad Websites
      3. 4.3 MSPWare Software and TI Resource Explorer
      4. 4.4 FRAM Utilities
      5. 4.5 MSP430FR2311MCU
        1. 4.5.1 Device Documentation
        2. 4.5.2 MSP430FR2311 MCU Code Examples
        3. 4.5.3 MSP430 MCU Application Notes and TI Designs
      6. 4.6 Community Resources
        1. 4.6.1 TI E2E Online Community
        2. 4.6.2 Community-at-Large
    6. 5 FAQ
    7. 6 Schematics
  2.   Revision History

2.2.3 Emulator Connection: Isolation Jumper Block

The isolation jumper block at jumper J101 allows the user to connect or disconnect signals that cross from the eZ-FET domain into the MSP430FR2311 MCU target domain. This includes eZ-FET Spy-Bi-Wire signals, application UART signals, and 3.3-V and 5-V power.

Reasons to open these connections:

  • To remove any and all influence from the eZ-FET emulator for high-accuracy target power measurements
  • To control 3-V and 5-V power flow between the eZ-FET and target domains
  • To expose the target microcontroller pins for other use than onboard debugging and application UART communication
  • To expose the programming and UART interface of the eZ-FET so that it can be used for devices other than the onboard microcontroller

Table 2. Isolation Block Connections(1)

Jumper Description
GND Ground
5V 5-V VBUS from USB
3V3 3.3-V rail, derived from VBUS in the eZ-FET domain
RXD << Backchannel UART: The target FR2311 receives data through this signal. The arrows indicate the direction of the signal.
TXD >> Backchannel UART: The target FR2311 sends data through this signal. The arrows indicate the direction of the signal.
SBW RST Spy-Bi-Wire emulation: SBWTDIO data signal. This pin also functions as the RST signal (active low).
SBW TST Spy-Bi-Wire emulation: SBWTCK clock signal. This pin also functions as the TST signal.
(1) Also see Figure 6.
fig06_eZ-FET_Isolation_Jumper.gifFigure 6. eZ-FET Isolation Jumper Block Diagram