AM29DL400BB-120EC AMD [Advanced Micro Devices], AM29DL400BB-120EC Datasheet - Page 12

• Manufacturer Part Number: AM29DL400BB-120EC
• Description: 4 Megabit (512 K x 8-Bit/256 K x 16-Bit) CMOS 3.0 Volt-only, Simultaneous Operation Flash Memory
• Manufacturer: AMD [Advanced Micro Devices]

Note: The address range is A17:A-1 if in byte mode (BYTE# = V
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 equipment
to automatically match a device to be programmed with
its corresponding programming algorithm. However,
the autoselect codes can also be accessed in-system
through the command register.
When using programming equipment, the autoselect
mode requires V
A9. Address pins A6, A1, and A0 must be as shown in
12
Bank 2
Bank 1
Bank
Sector
SA13
SA12
SA11
SA10
SA9
SA8
SA7
SA6
SA5
SA4
SA3
SA2
SA1
SA0
ID
A17
Address
(11.5 V to 12.5 V) on address pin
1
1
1
1
0
0
0
0
0
0
0
0
0
0
Bank
A16
1
1
0
0
1
1
0
0
0
0
0
0
0
0
Sector Address
Table 3.
A15
1
0
1
0
1
0
1
1
1
1
0
0
0
0
A14
X
X
X
X
X
X
1
1
0
0
0
1
1
1
0
0
Am29DL400BB Bottom Boot Sector Architecture
A13
P R E L I M I N A R Y
X
X
X
X
X
X
1
0
1
0
0
1
1
0
1
0
A12
Am29DL400B
X
X
X
X
X
X
X
X
X
1
0
1
0
X
X
X
(Kbytes/Kwords)
IL
Sector Size
). The address range is A17:A0 if in word mode (BYTE# = V
Table 4. In addition, when verifying sector protection,
the sector address must appear on the appropriate
highest order address bits (see Tables 2 and 3). Table
4 shows the remaining address bits that are don’t care.
When all necessary bits have been set as required, the
programming equipment may then read the corre-
sponding identifier code on DQ7-DQ0.
To access the autoselect codes in-system, the host
system can issue the autoselect command via the
command register, as shown in Table 5. This method
does not require V
Sequence section for more information.
64/32
64/32
64/32
64/32
64/32
64/32
32/16
32/16
16/8
16/8
8/4
8/4
8/4
8/4
0C000h–0DFFFh
1C000h–1FFFFh
0E000h–0FFFFh
70000h–7FFFFh
60000h–6FFFFh
50000h–5FFFFh
40000h–4FFFFh
30000h–3FFFFh
20000h–2FFFFh
14000h–1BFFFh
04000h–0BFFFh
Address Range
12000h–13FFFh
10000h–11FFFh
00000h–03FFFh
ID
. Refer to the Autoselect Command
(x8)
0A000h–0DFFFh
38000h–3FFFFh
28000h–2FFFFh
18000h–1FFFFh
0E000h–0FFFFh
Address Range
30000h–37FFFh
20000h–27FFFh
10000h–17FFFh
09000h–09FFFh
08000h–08FFFh
07000h–07FFFh
06000h–06FFFh
02000h–05FFFh
00000h–01FFFh
(x16)
IH
).