Datasheet

MSP430FE42x2
MIXED SIGNAL MICROCONTROLLER
SLAS616 − JULY 2008
11
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
memory organization
MSP430FE4232 MSP430FE4242 MSP430FE4252 MSP430FE4272
Memory
Interrupt vector
Code memory
Size
Flash
Flash
8KB
0FFFFh to 0FFE0h
0FFFFh to 0E000h
12KB
0FFFFh to 0FFE0h
0FFFFh to 0D000h
16KB
0FFFFh to 0FFE0h
0FFFFh to 0C000h
32KB
0FFFFh to 0FFE0h
0FFFFh to 08000h
Information memory Size 256 Byte
010FFh to 01000h
256 Byte
010FFh to 01000h
256 Byte
010FFh to 01000h
256 Byte
010FFh to 01000h
Boot memory Size 1kB
0FFFh to 0C00h
1kB
0FFFh to 0C00h
1kB
0FFFh to 0C00h
1kB
0FFFh to 0C00h
RAM Size 256 Byte
02FFh to 0200h
512 Byte
03FFh to 0200h
512 Byte
03FFh to 0200h
1KB
05FFh − 0200h
Peripherals 16 bit
8 bit
8-bit SFR
01FFh to 0100h
0FFh to 010h
0Fh to 00h
01FFh to 0100h
0FFh to 010h
0Fh to 00h
01FFh to 0100h
0FFh to 010h
0Fh to 00h
01FFh to 0100h
0FFh to 010h
0Fh to 00h
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 the application report Features of the MSP430
Bootstrap Loader, literature number SLAA089.
BSL Function PM Package Pins
Data Transmit 53 - P1.0
Data Receive 52 - P1.1
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:
D 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.
D Segments 0 to n may be erased in one step, or each segment may be individually erased.
D 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.
D 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.