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MSP430 Code Extract

MSP430G2x31 and MSP430G2x21 Flash Memory

  Time:2012-08-09 15:15

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 isFlash 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.