Datasheet

MSP430G22x0

SLAS753E –JANUARY 2012–REVISED FEBRUARY 2013

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Memory Organization

Table 9. Memory Organization

MSP430G22x0

Memory Size 2KB Flash

Main: interrupt vector Flash 0xFFFF-0xFFC0

Main: code memory Flash 0xFFFF-0xF800

Size 256 Byte

Information memory

Flash 0x10FF - 0x1000

128 Byte

RAM Size

0x027F - 0x0200

16-bit 0x01FF - 0x0100

Peripherals 8-bit 0x00FF - 0x0010

8-bit SFR 0x000F - 0x0000

Flash Memory

The flash memory can be programmed by the Spy-Bi-Wire or 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.