參數(shù)資料
型號: S29AL032D70BAE002
廠商: Spansion Inc.
英文描述: 32 Megabit CMOS 3.0 Volt-only Flash Memory
中文描述: 32兆位的CMOS 3.0伏只閃存
文件頁數(shù): 18/69頁
文件大?。?/td> 1970K
代理商: S29AL032D70BAE002
June 13, 2005 S29AL032D_00_A3
S29AL032D
23
Ad vance
Info rmat i o n
Write Protect (WP#) — Models 03, 04 Only
The Write Protect function provides a hardware method of protecting certain boot sectors without
using VID. This function is one of two provided by the WP#/ACC pin.
If the system asserts VIL on the WP#/ACC pin, the device disables program and erase functions
in the two outermost 8 Kbyte boot sectors independently of whether those sectors were protected
or unprotected using the method described in Sector Protection/Unprotection on page 20. The
two outermost 8 Kbyte boot sectors are the two sectors containing the lowest addresses in a bot-
tom-boot-configured device, or the two sectors containing the highest addresses in a top-boot-
configured device.
If the system asserts VIH on the WP#/ACC pin, the device reverts to whether the two outermost
8K Byte boot sectors were last set to be protected or unprotected. That is, sector protection or
unprotection for these two sectors depends on whether they were last protected or unprotected
using the method described in Sector Protection/Unprotection on page 20.
Note that the WP#/ACC pin must not be left floating or unconnected; inconsistent behavior of the
device may result.
Table 11. Sector Block Addresses for Protection/Unprotection — Model 04
Sector / Sector Block
A20–A12
Sector/Sector Block Size
SA70-SA67
111111XXX,
111110XXX,
111101XXX,
111100XXX
256 (4x64) Kbytes
SA66-SA63
1110XXXXX
256 (4x64) Kbytes
SA62-SA59
1101XXXXX
256 (4x64) Kbytes
SA58-SA55
1100XXXXX
256 (4x64) Kbytes
SA54-SA51
1011XXXXX
256 (4x64) Kbytes
SA50-SA47
1010XXXXX
256 (4x64) Kbytes
SA46-SA43
1001XXXXX
256 (4x64) Kbytes
SA42-SA39
1000XXXXX
256 (4x64) Kbytes
SA38-SA35
0111XXXXX
256 (4x64) Kbytes
SA34-SA31
0110XXXXX
256 (4x64) Kbytes
SA30-SA27
0101XXXXX
256 (4x64) Kbytes
SA26-SA23
0100XXXXX
256 (4x64) Kbytes
SA22–SA19
0011XXXXX
256 (4x64) Kbytes
SA18-SA15
0010XXXXX
256 (4x64) Kbytes
SA14-SA11
0001XXXXX
256 (4x64) Kbytes
SA10-SA8
000011XXX,
000010XXX,
000001XXX
192 (3x64) Kbytes
SA7
000000111
8 Kbytes
SA6
000000110
8 Kbytes
SA5
000000101
8 Kbytes
SA4
000000100
8 Kbytes
SA3
000000011
8 Kbytes
SA2
000000010
8 Kbytes
SA1
000000001
8 Kbytes
SA0
000000000
8 Kbytes
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