2.2 External Power
See the
.
2.3 Bootloader (BSL)
The JTAG pins provide access to the memory of the MSP430 and CC430 devices. On some devices, these pins
are shared with the device port pins, and this sharing of pins can complicate a design (or sharing may not be
possible). As an alternative to using the JTAG pins, most MSP430Fxxx devices contain a program (a
"bootloader", formerly knows as the "bootstrap loader") that permits the flash memory to be erased and
programmed using a reduced set of signals.
MSP430™ Flash Device Bootloader (BSL) User's Guide
describes
for the application reports and a list of MSP430 BSL tool developers.
TI suggests that MSP430Fxxx customers design their circuits with the BSL in mind (that is, TI suggests providing
access to these signals by, for example, a header).
See FAQ
for a second alternative to sharing the JTAG and port pins.
Design Considerations for In-Circuit Programming
24
MSP430™ Hardware Tools
SLAU278AG – MAY 2009 – REVISED DECEMBER 2020
Copyright © 2020 Texas Instruments Incorporated
