ACE25C400 Datasheet, PDF (5/31 Pages) ACE Technology Co., LTD. – 4MB Serial Flash Memory

ACE25C400
4MB Serial Flash Memory
Memory Organization
The ACE25C400 array is organized into 2,048 programmable pages of 256-bytes each. Up to 256
bytes can be programmed (bits are programmed from 1 to 0) at a time. Pages can be erased in
groups of 16 (4KB sector erase), groups of 256 (64KB block erase) or the entire chip (chip erase). The
ACE25C400 has 128 erasable sectors and 8 erasable 64-k byte blocks respectively. The small 4KB
sectors allow for greater flexibility in applications that require data and parameter storage.
Block (64KB)
Sector (4KB)
Address Range
127
07F000h
07FFFFh
7
…
…
…
112
070000h
070FFFh
111
06F000h
06FFFFh
6
…
…
…
96
060000h
060FFFh
95
05F000h
05FFFFh
5
…
…
…
80
050000h
050FFFh
79
04F000h
04FFFFh
4
…
…
…
64
040000h
040FFFh
63
03F000h
03FFFFh
3
…
…
…
48
030000h
030FFFh
47
02F000h
02FFFFh
2
…
…
…
32
020000h
020FFFh
31
01F000h
01FFFFh
1
…
…
…
16
010000h
010FFFh
15
00F000h
00FFFFh
…
…
…
0
2
002000h
002FFFh
1
001000h
001FFFh
0
000000h
000FFFh
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