Texas Instruments MSP430x11x1 warranty memory organization, boot ROM containing bootstrap loader

MSP430x11x1

MIXED SIGNAL MICROCONTROLLER

SLAS241C ± SEPTEMBER 1999 ± REVISED JUNE 2000

memory organization

	MSP430C1111
FFFFh		FFFFh
	Int. Vector
FFE0h		FFE0h
FFDFh	2 KB ROM	FFDFh
F800h		F000h

		02FFh
027Fh
	128B RAM	0200h
0200h
01FFh	16b Per.	01FFh
0100h		0100h
00FFh	8b Per.	00FFh
0010h		0010h
000Fh	SFR	000Fh
0000h		0000h

MSP430C1121		MSP430F1101
	FFFFh		FFFFh
Int. Vector		Int. Vector
	FFE0h		FFE0h
	FFDFh	1 KB Flash	FFDFh
4 KB	FC00h	Segment0,1
ROM	10FFh		F000h
		128B Flash	10FFh
	1080h	SegmentA
	0FFFh		1000h
		1 KB
	0C00h	Boot ROM	0FFFh
			0C00h
			02FFh
256B RAM	027Fh
		128B RAM
	0200h		0200h
16b Per.	01FFh	16b Per.	01FFh
	0100h		0100h
8b Per.	00FFh	8b Per.	00FFh
	0010h		0010h
SFR	000Fh	SFR	000Fh
	0000h		0000h

MSP430F1121
Int. Vector
4 KB	Main
Flash
Segment0±7	Memory
2 ⋅ 128B	Information
Flash
	Memory
SegmentA,B
1 KB
Boot ROM
256B RAM
16b Per.
8b Per.
SFR

boot ROM containing bootstrap loader

The intention of the bootstrap loader is to download data into the flash memory module. Various write, read, and erase operations are needed for a proper download environment. The bootstrap loader is only available on F devices.

functions of the bootstrap loader:

Definition of read:	apply and transmit data of peripheral registers or memory to pin P1.1 (BSLTX)
write:	read data from pin P2.2 (BSLRX) and write them into flash memory

unprotected functions

Mass erase, erase of the main memory (Segment0 to Segment7)

Access to the MSP430 via the bootstrap loader is protected. It must be enabled before any protected function can be performed. The 256 bits in 0FFE0h to 0FFFFh provide the access key.

protected functions

All protected functions can be executed only if the access is enabled.

DWrite/program byte into flash memory; Parameters passed are start address and number of bytes (the segment-write feature of the flash memory is not supported and not useful with the UART protocol).

DSegment erase of Segment0 to Segment7 in the main memory and segment erase of SegmentA and SegmentB in the information memory.

DRead all data in main memory and information memory.

DRead and write to all byte peripheral modules and RAM.

DModify PC and start program execution immediately.

NOTE:

Unauthorized readout of code and data is prevented by the user's definition of the data in the interrupt memory locations.

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