ꢀ ꢁ ꢂꢃ ꢄ ꢅ ꢆꢇ ꢄꢆꢈ ꢀꢁ ꢂ ꢃꢄ ꢅ ꢆ ꢇ ꢃ ꢆꢈ ꢀꢁ ꢂ ꢃꢄ ꢅ ꢆ ꢇ ꢃꢆ ꢇ
ꢀ ꢉ ꢊ ꢋꢌ ꢁꢉ ꢍꢎ ꢏ ꢐ ꢀꢉ ꢑ ꢒꢓꢑ ꢓꢎ ꢔꢒ ꢓꢐ ꢐꢋ ꢒ
SLAS272F − JULY 2000 − REVISED JUNE 2004
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
D
Segments 0 to n may be erased in one step, or each segment may be individually erased.
Segments A and B can be erased individually, or as a group with segments 0−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.
8 KB
16 KB
32 KB
48 KB
60 KB
Segment 0
w/ Interrupt Vectors
0FFFFh
0FFFFh
0FFFFh
0FFFFh
0FFFFh
0FE00h
0FDFFh
0FE00h
0FDFFh
0FE00h
0FDFFh
0FE00h
0FDFFh
0FE00h
0FDFFh
Segment 1
Segment 2
0FC00h
0FBFFh
0FC00h
0FBFFh
0FC00h
0FBFFh
0FC00h
0FBFFh
0FC00h
0FBFFh
0FA00h
0F9FFh
0FA00h
0F9FFh
0FA00h
0F9FFh
0FA00h
0F9FFh
0FA00h
0F9FFh
Main
Memory
0E400h
0E3FFh
0C400h
0C3FFh
08400h
083FFh
04400h
043FFh
01400h
013FFh
Segment n-1
Segment n
0E200h
0E1FFh
0C200h
0C1FFh
08200h
081FFh
04200h
041FFh
01200h
011FFh
0E000h
010FFh
0C000h
010FFh
08000h
010FFh
04000h
010FFh
01100h
010FFh
Segment A
Segment B
Information
Memory
01080h
0107Fh
01080h
0107Fh
01080h
0107Fh
01080h
0107Fh
01080h
0107Fh
01000h
01000h
01000h
01000h
01000h
16
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