SLAU573C November   2015  – October 2019

 

  1.   MSP-BSL Bootloader (BSL) Programmer for MSP430™ and SimpleLink™ MSP432™ Microcontrollers
    1.     Trademarks
    2. 1 Introduction
      1. 1.1 Additional Online Information
    3. 2 Functionality and Supported Protocols
      1. 2.1 BSL Entry Sequence
      2. 2.2 UART Communication
      3. 2.3 I2C Communication
      4. 2.4 SPI Communication
    4. 3 Firmware Update
    5. 4 Hardware
      1. 4.1 Schematic
      2. 4.2 BSL Connector and Available Pins
      3. 4.3 Target Power Supply
      4. 4.4 Pullups for I2C Operation
    6. 5 Firmware Revision History
  2.   Revision History

4.3 Target Power Supply

The MSP-BSL has a built-in 3.3-V power supply for the target board. It can supply up to 150 mA of current. The power is supplied on pin 6 of the BSL connector but can be cut (by opening PWR_E, see Figure 8) if not needed.

cuttable_power_supply_slau573.pngFigure 8. Cuttable Power Supply Trace (PWR_E)

NOTE

Cutting the power supply at PWR_E also prevents the onboard pullup resistors (R10, R11) from being pulled high.