AM49DL323BGT85S AMD [Advanced Micro Devices], AM49DL323BGT85S Datasheet - Page 19

• Manufacturer Part Number: AM49DL323BGT85S
• Description: 32 Megabit (4 M x 8-Bit/2 M x 16-Bit) CMOS 3.0 Volt-only, Simultaneous Operation Flash Memory and 32 Mbit (2M x 16-Bit)
• Manufacturer: AMD [Advanced Micro Devices]

Autoselect Mode
The autoselect mode provides manufacturer and de-
vice identification, and sector protection verification,
through identifier codes output on DQ7–DQ0. This
mode is primarily intended for programming equip-
m e n t t o a u t o m a t i c a l l y m a t c h a d e v i c e t o b e
programmed with its corresponding programming al-
gorithm. However, the autoselect codes can also be
accessed in-system through the command register.
To access the autoselect codes in-system, the host
system can issue the autoselect command via the
command register, as shown in Tables 15 and 16. This
method does not require V
Command Sequence section for more information.
Sector/Sector Block Protection and
Unprotection
(Note: For the following discussion, the term “sector”
applies to both sectors and sector blocks. A sector
block consists of two or more adjacent sectors that are
protected or unprotected at the same time (see Table
8).
18
ID
. Refer to the Autoselect
P R E L I M I N A R Y
Am49DL32xBG
Table 8. Top Boot Sector/Sector Block Addresses
SA12–SA15
SA16–SA19
SA20–SA23
SA24–SA27
SA28–SA31
SA32–SA35
SA36–SA39
SA40–SA43
SA44–SA47
SA48–SA51
SA52–SA55
SA56–SA59
SA60–SA62
SA8–SA11
SA1–SA3
SA4–SA7
Sector
SA63
SA64
SA65
SA66
SA67
SA68
SA69
SA70
SA0
for Protection/Unprotection
000001XXX,
0001XXXXX
0010XXXXX
0011XXXXX
0100XXXXX
0101XXXXX
0110XXXXX
1000XXXXX
1001XXXXX
1010XXXXX
1011XXXXX
1100XXXXX
1101XXXXX
0111XXXXX
1110XXXXX
111100XXX,
111101XXX,
000000XXX
000010XXX
000011XXX
111110XXX
111111000
111111001
111111010
111111011
111111100
111111101
111111110
111111111
A20–A12
Sector Block Size
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
192 (4x64) Kbytes
64 Kbytes
July 19, 2002
8 Kbytes
8 Kbytes
8 Kbytes
8 Kbytes
8 Kbytes
8 Kbytes
8 Kbytes
8 Kbytes
Sector/