7.4.6 Erase Check
7.4.7 Change Baud Rate
Data Frame
The MSP430F1xxx and MSP430F4xxx device segmentation is configured as follows:
0FE00h–0FFFFh : Segment 0 Main memory
0FC00h–0FDFFh : Segment 1
0FA00h–0FBFFh : Segment 2
0F800h–0F9FFh : Segment 3
...
01200h–013FFh : Segment n-1
01100h–011FFh : Segment n
01080h–010FFh : Segment A
01000h–0107Fh : Segment B Information memory
The MSP430F2xxx device segmentation is configured as follows:
0FE00h–0FFFFh : Segment 0 Main memory
0FC00h–0FDFFh : Segment 1
0FA00h–0FBFFh : Segment 2
0F800h–0F9FFh : Segment 3
...
01200h–013FFh : Segment n-1
01100h–011FFh : Segment n
010C0h–010FFh : Segment A Information memory
01080h–010BFh : Segment B
01040h–0107Fh : Segment C
01000h–0103Fh : Segment D
The erase check command verifies the erasure of flash memory within a certain address range. It is
password protected.
The 16-bit block start address is defined in AL (low byte) and AH (high byte). The 16-bit block length is
defined in LL (low byte) and LH (high byte). Both can be either even or odd numbered to allow odd
boundary checking.
If the erase check of the appropriate data block was successful (all bytes contain 0FFh), an acknowledge
character DATA_ACK is sent back by the BSL. Otherwise, the BSL confirms with a DATA_NAK and the
first non-erased location address + 1 is stored in the error address buffer at address 0200h (021Eh for
F14x devices).
Note: This command is not a member of the standard command set. It is implemented in BSL
version V1.60 and higher or in the loadable bootstrap loader BL_150S_14x.txt.
The change baud rate command offers the capability of transmissions at higher baud rates than the
default 9600 baud. With faster data transition, shorter programming cycles can be achieved, which is
especially important with large flash memory devices. This command is not password protected.
SLAA089D – December 1999 – Revised August 2006 Features of the MSP430 Bootstrap Loader 9
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