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

4.2 BSL Connector and Available Pins

Figure 7 shows the BSL Connector as seen from the target side.

  • UART communication is handled through pin 1 (TX) and pin 3 (RX).
  • I2C communication is handled through pin 1 (SDA) and pin 9 (SCL).
  • SPI communication is handled through pin 1 (SOMI), pin 3 (SIMO), pin 9 (CLK), and pin 10 (STE).
  • The entry sequence can be generated using pin 4 (RST) and pin 7 (TEST) for devices with shared JTAG pins, or using pin 2 (TCK) and pin 4 (RST) for devices with dedicated JTAG pins.
  • Power is supplied through pin 6 (VCC), and electrical ground is supplied through pin 5 (GND).

The connector uses 0.1-inch spacing and is a 10-pin male header on the target board.

bsl_connector_slau573.gifFigure 7. Pinout of the BSL Connector (Target Side)