MSP430G2231-EP_16 Datasheet, PDF (9/46 Pages) Texas Instruments – MIXED SIGNAL MICROCONTROLLER

MSP430G2231-EP
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Memory Organization
Memory
Main: interrupt vector
Main: code memory
Information memory
RAM
Peripherals
Table 9. Memory Organization
Size
Flash
Flash
Size
Flash
Size
16-bit
8-bit
8-bit SFR
SLAS862 – JUNE 2012
MSP430G2231
2kB
0xFFFF to 0xFFC0
0xFFFF to 0xF800
256 Byte
010FFh to 01000h
128B
027Fh to 0200h
01FFh to 0100h
0FFh to 010h
0Fh to 00h
Flash Memory
The flash memory can be programmed via the Spy-Bi-Wire/JTAG port 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 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 to n. Segments A to D are also
called information memory.
• Segment A contains calibration data. After reset segment A is protected against programming and erasing. It
can be unlocked but care should be taken not to erase this segment if the device-specific calibration data is
required.
Copyright © 2012, Texas Instruments Incorporated
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