M25PE20, M25PE10
5
Memory organization
Memory organization
The M25PE20 memory is organized as:
● 1024 pages (256 bytes each).
● 262,144 bytes (8 bits each)
● 64 subsectors (32 Kbits, 4,096 bytes each)
● 4 sectors (512 Kbits, 65,536 bytes each)
The M25PE10 memory is organized as:
● 512 pages (256 bytes each).
● 131,074 bytes (8 bits each)
● 32 subsectors (32 Kbits, 4,096 bytes each)
● 2 sectors (512 Kbits, 65,536 bytes each)
In the M25PE20 and M25PE10, each page can be individually:
● programmed (bits are programmed from 1 to 0)
● erased (bits are erased from 0 to 1)
● written (bits are changed to either 0 or 1).
The device is page or sector erasable (bits are erased from 0 to 1).
Table 5. M25PE20 memory organization
Sector
Subsector
63
3
48
47
2
32
31
1
16
15
Address range
3F000h
3FFFFh
30000h
2F000h
30FFFh
2FFFFh
20000h
1F000h
20FFFh
1FFFFh
10000h
0F000h
10FFFh
0FFFFh
4
04000h
04FFFh
0
3
03000h
03FFFh
2
02000h
02FFFh
1
01000h
01FFFh
0
00000h
00FFFh
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