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AT26DF161A
Figure 4-1.
Memory Architecture Diagram
Block Erase Detail
Page Program Detail
Internal Sectoring for
64KB 32KB
4KB
1-256 Byte
Sector Protection
Function
Block Erase Block Erase
(D8h Command) (52h Command)
Block Erase
(20h Command)
Block Address
Range
Page Program
(02h Command)
Page Address
Range
4KB
4KB
4KB
1FFFFFh
1FEFFFh
1FDFFFh
–
–
–
1FF000h
1FE000h
1FD000h
256 Bytes
256 Bytes
256 Bytes
1FFFFFh
1FFEFFh
1FFDFFh
–
–
–
1FFF00h
1FFE00h
1FFD00h
32KB
4KB
4KB
4KB
4KB
1FCFFFh
1FBFFFh
1FAFFFh
1F9FFFh
–
–
–
–
1FC000h
1FB000h
1FA000h
1F9000h
256 Bytes
256 Bytes
256 Bytes
256 Bytes
0FFCFFh
1FFBFFh
1FFAFFh
1FF9FFh
–
–
–
–
0FFC00h
1FFB00h
1FFA00h
1FF900h
64KB
(Sector 31)
64KB
(Sector 30)
64KB
64KB
32KB
32KB
4KB
4KB
4KB
4KB
4KB
4KB
4KB
4KB
4KB
4KB
4KB
4KB
4KB
4KB
4KB
4KB
4KB
4KB
1F8FFFh
1F7FFFh
1F6FFFh
1F5FFFh
1F4FFFh
1F3FFFh
1F2FFFh
1F1FFFh
1F0FFFh
1EFFFFh
1EEFFFh
1EDFFFh
1ECFFFh
1EBFFFh
1EAFFFh
1E9FFFh
1E8FFFh
1E7FFFh
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
1F8000h
1F7000h
1F6000h
1F5000h
1F4000h
1F3000h
1F2000h
1F1000h
1F0000h
1EF000h
1EE000h
1ED000h
1EC000h
1EB000h
1EA000h
1E9000h
1E8000h
1E7000h
256 Bytes
256 Bytes
256 Bytes
256 Bytes
256 Bytes
256 Bytes
256 Bytes
256 Bytes
256 Bytes
256 Bytes
256 Bytes
256 Bytes
256 Bytes
256 Bytes
256 Bytes
256 Bytes
256 Bytes
1FF8FFh
1FF7FFh
1FF6FFh
1FF5FFh
1FF4FFh
1FF3FFh
1FF2FFh
1FF1FFh
1FF0FFh
1FEFFFh
1FEEFFh
1FEDFFh
1FECFFh
1FEBFFh
1FEAFFh
1FE9FFh
1FE8FFh
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
1FF800h
1FF700h
1FF600h
1FF500h
1FF400h
1FF300h
1FF200h
1FF100h
1FF000h
1FEF00h
1FEE00h
1FED00h
1FEC00h
1FEB00h
1FEA00h
1FE900h
1FE800h
4KB
4KB
1E6FFFh
1E5FFFh
–
–
1E6000h
1E5000h
32KB
4KB
4KB
4KB
4KB
4KB
1E4FFFh
1E3FFFh
1E2FFFh
1E1FFFh
1E0FFFh
–
–
–
–
–
1E4000h
1E3000h
1E2000h
1E1000h
1E0000h
256 Bytes
256 Bytes
256 Bytes
256 Bytes
256 Bytes
0017FFh
0016FFh
0015FFh
0014FFh
0013FFh
–
–
–
–
–
001700h
001600h
001500h
001400h
001300h
256 Bytes
256 Bytes
256 Bytes
0012FFh
0011FFh
0010FFh
–
–
–
001200h
001100h
001000h
4KB
4KB
4KB
00FFFFh
00EFFFh
00DFFFh
–
–
–
00F000h
00E000h
00D000h
256 Bytes
256 Bytes
256 Bytes
000FFFh
000EFFh
000DFFh
–
–
–
000F00h
000E00h
000D00h
32KB
4KB
4KB
4KB
4KB
00CFFFh
00BFFFh
00AFFFh
009FFFh
–
–
–
–
00C000h
00B000h
00A000h
009000h
256 Bytes
256 Bytes
256 Bytes
256 Bytes
000CFFh
000BFFh
000AFFh
0009FFh
–
–
–
–
000C00h
000B00h
000A00h
000900h
64KB
(Sector 0)
64KB
32KB
4KB
4KB
4KB
4KB
4KB
4KB
4KB
4KB
4KB
008FFFh
007FFFh
006FFFh
005FFFh
004FFFh
003FFFh
002FFFh
001FFFh
000FFFh
–
–
–
–
–
–
–
–
–
008000h
007000h
006000h
005000h
004000h
003000h
002000h
001000h
000000h
256 Bytes
256 Bytes
256 Bytes
256 Bytes
256 Bytes
256 Bytes
256 Bytes
256 Bytes
256 Bytes
0008FFh
0007FFh
0006FFh
0005FFh
0004FFh
0003FFh
0002FFh
0001FFh
0000FFh
–
–
–
–
–
–
–
–
–
000800h
000700h
000600h
000500h
000400h
000300h
000200h
000100h
000000h
5
3640D–DFLASH–8/09
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