msp430f2121irge Microchip Technology Inc., msp430f2121irge Datasheet - Page 8

• Manufacturer Part Number: msp430f2121irge
• Description: Msp430
• Manufacturer: Microchip Technology Inc.

MSP430x21x1
MIXED SIGNAL MICROCONTROLLER
SLAS439C − SEPTEMBER 2004 − REVISED JULY 2006
memory organization
bootstrap loader (BSL)
flash memory
8
Memory
Main: interrupt vector
Main: code memory
Information memory
Boot memory
RAM
Peripherals
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. A bootstrap loader
security key is provided at address 0FFDEh to disable the BSL completely or to disable the erasure of the flash
if an invalid password is supplied. 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.
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
D
D
D
Flash memory has n segments of main memory and four segments of information memory (A to D) of 64
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 to D can be erased individually, or as a group with segments 0−n.
Segments A to D are also called information memory.
Segment A contains calibration data. After reset segment A is protected against programming or erasing.
It can be unlocked but care should be taken not to erase this segment if the calibration data is required.
any other value
BSL Function
8-bit SFR
Data Transmit
Data Receive
BSLKEY
0AA55h
00000h
16-bit
Flash
Flash
Flash
ROM
Size
Size
Size
Size
8-bit
010FFh − 01000h
0FFFFh−0FFE0h
0FFFFh−0FC00h
0FFFh − 0C00h
027Fh − 0200h
01FFh − 0100h
MSP430F2101
0FFh − 010h
1KB Flash
0Fh − 00h
256 Byte
128 Byte
1KB
POST OFFICE BOX 655303
Erasure of flash disabled if an invalid password is supplied
BSL disabled
BSL enabled
DW, PW & DGV Package Pins
14 - P1.1
10 - P2.2
010FFh − 01000h
0FFFFh−0FFE0h
0FFFFh−0F800h
0FFFh − 0C00h
027Fh − 0200h
01FFh − 0100h
MSP430F2111
0FFh − 010h
•
2KB Flash
0Fh − 00h
256 Byte
128 Byte
DALLAS, TEXAS 75265
1KB
Description
010FFh − 01000h
0FFFFh−0FFE0h
0FFFFh−0F000h
0FFFh − 0C00h
02FFh − 0200h
01FFh − 0100h
MSP430F2121
0FFh − 010h
4KB Flash
0Fh − 00h
256 Byte
256 Byte
1KB
RGE Package Pins
14 - P1.1
8 - P2.2
010FFh − 01000h
0FFFFh−0FFE0h
0FFFFh−0E000h
0FFFh − 0C00h
02FFh − 0200h
01FFh − 0100h
MSP430F2131
0FFh − 010h
8KB Flash
0Fh − 00h
256 Byte
256 Byte
1KB