A d v a n c e I n f o r m a t i o n
The device is shipped with all sectors unprotected. Spansion offers the option of programming
and protecting sectors at its factory prior to shipping the device through the Spansion Express-
Flash™ Service. Contact a Spansion representative for further details.
It is possible to determine whether a sector is protected or unprotected. See “Autoselect Mode”
for details.
Sector protection/unprotection can be implemented via two methods.
The primary method requires V on the RESET# pin only, and can be implemented either in-sys-
ID
tem or via programming equipment. Figure 2, on page 25 shows the algorithms and Figure 26,
on page 59 shows the timing diagram. This method uses standard microprocessor bus cycle tim-
ing. For sector unprotect, all unprotected sectors must first be protected prior to the first sector
unprotect write cycle.
The alternate method intended only for programming equipment requires V on address pin A9
ID
and OE#. This method is compatible with programmer routines written for earlier 3.0 volt-only
Spansion flash devices. Details on this method are provided in a supplement, publication number
21468. Contact a Spansion representative to request a copy.
Table 9. Sector Block Addresses for Protection/Unprotection — Model 00
Sector/Sector Block
A21–A16
Sector/Sector Block Size
SA0
000000
64 Kbytes
000001,000010,
000011
SA1-SA3
SA4-SA7
192 (3x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
256 (4x64) Kbytes
000100, 000101,
000110, 000111
001000, 001001,
001010, 001011
SA8-SA11
SA12-SA15
SA16-SA19
SA20-SA23
SA24-SA27
SA28-SA31
SA32-SA35
SA36-SA39
SA40-SA43
SA44-SA47
SA48-SA51
SA52-SA55
SA56-SA59
001100, 001101,
001110, 001111
010000, 010001,
010010, 010011
010100, 010101,
010110, 010111
011000, 011001,
011010, 011011
011100, 011101,
011110, 011111
100000, 100001,
100010, 100011
100100, 100101,
100110, 100111
101000, 101001,
101010, 101011
101100, 101101,
101110, 101111
110000, 110001,
110010, 110011
110100, 110101,
110110, 110111
111000, 111001,
111010, 111011
111100, 111101,
111110
SA60-SA62
SA63
192 (4x64) Kbytes
64 Kbytes
111111
June 13, 2005 S29AL032D_00_A3
S29AL032D
21
SPANSION [ SPANSION ]
