SA25F020 Datasheet, PDF (5/37 Pages) List of Unclassifed Manufacturers – 2Mb Serial Flash with 25MHz SPI Bus Interface

SA25F020 Advanced Information
SAIFUN
5
Memory Organization
The memory is organized in the following
manner:
•= 262,144 bytes (8 bits each)
•= 4 sectors (512 Kb, 65,536 bytes
each), as shown in Table 1
Each page can be individually
programmed, with the bits programmed
from 1 to 0. The SA25F020's memory can
be erased via the Page, Sector or Bulk
Erase commands, with the bits erased
from 0 to 1.
•= 1024 pages (256 bytes each)
Table 1. Memory Organization
Sector
Address Range
3
30000h
3FFFFh
2
20000h
2FFFFh
1
10000h
1FFFFh
0
00000h
0FFFFh
SRAM
PS
Logic
Array - L
X
D
E
Array - R
C
RD
DATA PATH
IO
Figure 1. SA25F020 Block Diagram