AM29DL400BB-120SF AMD [Advanced Micro Devices], AM29DL400BB-120SF Datasheet - Page 13

• Manufacturer Part Number: AM29DL400BB-120SF
• 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
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 equip-
m e nt to a u t o m a t i ca l l y m a t c h a d e v i ce 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.
When using programming equipment, the autoselect
mode requires V
A9. Address pins A6, A1, and A0 must be as shown
in Table 4. In addition, when verifying sector protec-
Bank 2
Bank 1
IH
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
Table 3. Am29DL400BB Bottom Boot Sector Architecture
A16
1
1
0
0
1
1
0
0
0
0
0
0
0
0
Sector Address
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
A13
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)
Sector Size
IL
tio n, the sec tor add re ss mu st app ear 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 corresponding 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
mand Sequence section for more information.
). The address range is A17:A0 if in word mode (BYTE# =
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
Address Range
0C000h–0DFFFh
70000h–7FFFFh
60000h–6FFFFh
50000h–5FFFFh
40000h–4FFFFh
30000h–3FFFFh
20000h–2FFFFh
1C000h–1FFFFh
14000h–1BFFFh
12000h–13FFFh
10000h–11FFFh
0E000h–0FFFFh
04000h–0BFFFh
00000h–03FFFh
ID
(x8)
. Refer to the Autoselect Com-
Address Range
0A000h–0DFFFh
38000h–3FFFFh
30000h–37FFFh
28000h–2FFFFh
20000h–27FFFh
18000h–1FFFFh
10000h–17FFFh
0E000h–0FFFFh
09000h–09FFFh
08000h–08FFFh
07000h–07FFFh
06000h–06FFFh
02000h–05FFFh
00000h–01FFFh
(x16)
11