SLAU647O July   2015  – April 2020

 

  1.   MSP Debuggers
    1.     Trademarks
    2. 1 Introduction
      1. 1.1 Related Documentation From Texas Instruments
      2. 1.2 Terms and Abbreviations
      3. 1.3 If You Need Assistance
    3. 2 MSP Debug Probe Overview
      1. 2.1 Known Limitations
    4. 3 Hardware Identification
      1. 3.1 How to Determine If Your Hardware is Based on eZ-FET or eZ-FET Lite
      2. 3.2 How to Determine If Your Hardware is Based on eZ430
      3. 3.3 Signal Connections for In-System Programming and Debugging
      4. 3.4 Using the Power Supply Feature of the eZ-FET and eZ-FET Lite
      5. 3.5 Using the Power Supply Feature of the MSP-FET430UIF and MSP-FET
    5. 4 Hardware Installation
      1. 4.1 MSP-FET430PIF
      2. 4.2 MSP-FET430UIF, MSP-FET, eZ-FET, and eZ-FET Lite
      3. 4.3 eZ430-Based Experimenter Boards and LaunchPad Kits
      4. 4.4 Hardware Installation Using the MSP Flasher
      5. 4.5 Hardware Installation Using CCS Cloud
    6. 5 Debug Probes Hardware and Software
      1. 5.1  MSPDebugStack
      2. 5.2  Ultra-Low-Power (ULP) Debug Support
      3. 5.3  EnergyTrace™ Technology
      4. 5.4  Unlimited Software Breakpoints in Flash, FRAM, and RAM
      5. 5.5  JTAG Access Protection (Fuse Blow)
      6. 5.6  MSP-FET Stand-Alone Debug Probe
        1. 5.6.1 General Features
        2. 5.6.2 Backchannel UART
          1. 5.6.2.1 UART Backchannel Activation Commands
        3. 5.6.3 Target BSL Connection and BSL-Scripter Support
        4. 5.6.4 LED Signals
        5. 5.6.5 Hardware
          1. 5.6.5.1 JTAG Target Connector
          2. 5.6.5.2 MSP-FET Pin States After Power Up
          3. 5.6.5.3 MSP-FET HID Cold Boot
          4. 5.6.5.4 Schematics
            1. 5.6.5.4.1 MSP-FET Rev 2.5 Schematics
            2. 5.6.5.4.2 MSP-FET Rev 1.2 Schematics
        6. 5.6.6 Specifications
          1. 5.6.6.1 Hardware
          2. 5.6.6.2 MSP430 MCUs
          3. 5.6.6.3 SimpleLink MSP432 MCUs
      7. 5.7  MSP-FET430UIF Stand-Alone Debugger
        1. 5.7.1 General Features
        2. 5.7.2 LED Signals
        3. 5.7.3 Hardware
          1. 5.7.3.1 JTAG Target Connector
          2. 5.7.3.2 Pin States After Power Up
          3. 5.7.3.3 Schematics
      8. 5.8  eZ-FET and eZ-FET Lite Onboard Emulation
        1. 5.8.1 General Features
        2. 5.8.2 Backchannel UART
          1. 5.8.2.1 eZ-FET and eZ-FET Lite UART Backchannel Activation Commands
        3. 5.8.3 LED Signals
        4. 5.8.4 Hardware
          1. 5.8.4.1 JTAG Target Connector
          2. 5.8.4.2 Connecting MSP-FET to LaunchPad Development Kit
          3. 5.8.4.3 Pin States After Power Up
          4. 5.8.4.4 Schematics
            1. 5.8.4.4.1 eZ-FET Rev 1.2 Schematics
            2. 5.8.4.4.2 eZ-FET Lite Schematics
            3. 5.8.4.4.3 eZ-FET Rev 1.4 Schematic
            4. 5.8.4.4.4 eZ-FET Rev 2.0 ET Schematics
      9. 5.9  eZ430 Onboard Emulation
        1. 5.9.1 General Features
        2. 5.9.2 Backchannel UART
        3. 5.9.3 Hardware
          1. 5.9.3.1 JTAG Target Connector
          2. 5.9.3.2 Pin States After Power Up
          3. 5.9.3.3 Schematics
      10. 5.10 MSP-FET430PIF
        1. 5.10.1 General Features
        2. 5.10.2 Schematics
  2.   Revision History

5.5 JTAG Access Protection (Fuse Blow)

Different MSP430 MCUs implement different methods to prevent JTAG debug access to the MSP430 target device.

NOTE

Only the MSP-FET and the MSP-FET430UIF support JTAG access protection to disable JTAG access.

For more details how the JTAG access protection mechanism is implemented see the "JTAG Access Protection" section in MSP430 programming with the JTAG interface.

JTAG fuse

  • Available on 1xx, 2xx, and 4xx families (except FRxx and I20xx devices)
  • Applying a high voltage to test the TEST pin of the MSP430 target device blows an actual physical polyfuse and disables the JTAG interface.

JTAG lock without password (eFuse/"soft" fuse)

  • Available on 5xx, 6xx, and FRxx families
  • A certain lock pattern is written into the MSP430 target memory to disable the JTAG interface.

JTAG lock with password

  • Available only FRxx families
  • A user-defined password can disable JTAG access to the MSP430 target device.
  • Using CCS, EW430, or the MSP Flasher, applying the configured password to the MSP430 target restores JTAG access

Memory protection by custom startup code (SUC)

  • Available on only the i20xx family (for example, the MSP430i2040 device)
  • Custom startup code can enable or disable JTAG access to the MSP430i20xx target device.

DAP (Debug Access Port) lock

  • Available on MSP432P401x family – Locks JTAG/SWD connection to MSP432P401x device
  • Execute a Factory Reset to unlock the Debug Access port.