MSP430FG439 Datasheet, PDF (47/88 Pages) Texas Instruments – Mixed-Signal Microcontrollers

www.ti.com
MSP430FG439, MSP430FG438, MSP430FG437
SLAS380D – APRIL 2004 – REVISED NOVEMBER 2014
6.7 Bootstrap Loader (BSL)
The MSP430 bootstrap loader (BSL) enables users to program the flash memory or RAM using a UART
serial interface. Access to the MSP430 memory via the BSL is protected by user-defined password. For
complete description of the features of the BSL and its implementation, see MSP430 Programming Via the
Bootstrap Loader (BSL) (SLAU319).
BSL FUNCTION
Data Transmit
Data Receiver
PN PACKAGE PINS
67 – P1.0
66 – P1.1
ZCA PACKAGE PINS
D8 – P1.0
D9 – P1.1
6.8 Flash Memory
The flash memory can be programmed via the JTAG port, the bootstrap loader, or in system by the CPU.
The CPU can perform single-byte and single-word writes to the flash memory. Features of the flash
memory include:
• Flash memory has n segments of main memory and two segments of information memory (A and B) of
128 bytes each. Each segment in main memory is 512 bytes in size.
• Segments 0 to n may be erased in one step, or each segment may be individually erased.
• Segments A and B can be erased individually, or as a group with segments 0 to n. Segments A and B
are also called information memory.
• New devices may have some bytes programmed in the information memory (needed for test during
manufacturing). The user should perform an erase of the information memory prior to the first use.
32KB
0FFFFh
0FE00h
0FDFFh
0FC00h
0FBFFh
0FA00h
0F9FFh
48KB
0FFFFh
0FE00h
0FDFFh
0FC00h
0FBFFh
0FA00h
0F9FFh
60KB
0FFFFh
0FE00h
0FDFFh
0FC00h
0FBFFh
0FA00h
0F9FFh
Segment 0
with Interrupt Vectors
Segment 1
Segment 2
Main
Memory
08400h
083FFh
08200h
081FFh
08000h
010FFh
01080h
0107Fh
01000h
04400h
043FFh
04200h
041FFh
04000h
010FFh
01080h
0107Fh
01000h
01400h
013FFh
01200h
011FFh
01100h
010FFh
01080h
0107Fh
01000h
Segment n-1
Segment n
(see Note A)
Segment A
Segment B
A. MSP430FG43x flash segment n = 256 bytes.
Figure 6-7. Flash Memory Segments
Information
Memory
Copyright © 2004–2014, Texas Instruments Incorporated
Submit Documentation Feedback
Product Folder Links: MSP430FG439 MSP430FG438 MSP430FG437
Detailed Description
47