AM29LV200 AMD [Advanced Micro Devices], AM29LV200 Datasheet - Page 9

• Manufacturer Part Number: AM29LV200
• Description: 2 Megabit (256 K x 8-Bit/128 K x 16-Bit) CMOS 3.0 Volt-only Boot Sector Flash Memory
• Manufacturer: AMD [Advanced Micro Devices]

Note for Tables 2 and 3: Address range is A16:A-1 in byte mode and A16:A0 in word mode. See “Word/Byte Configuration”
section for more information.
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
Table 4. In addition, when verifying sector protection,
9
Sector
Sector
SA0
SA1
SA2
SA3
SA4
SA5
SA6
SA0
SA1
SA2
SA3
SA4
SA5
SA6
A16
A16
0
0
1
1
1
1
1
0
0
0
0
0
1
1
ID
(11.5 V to 12.5 V) on address pin
A15
A15
0
1
0
1
1
1
1
Table 3. Am29LV200B Bottom Boot Block Sector Address Table
0
0
0
0
1
0
1
Table 2. Am29LV200T Top Boot Block Sector Address Table
A14
A14
X
X
X
X
X
X
0
1
1
1
0
0
0
1
A13
A13
X
X
X
X
0
0
1
0
1
1
X
X
X
X
A12
A12
P R E L I M I N A R Y
X
X
X
X
X
X
X
X
X
X
0
1
0
1
Am29LV200
Sector Size
Sector Size
(Kbytes/
Kwords)
(Kbytes/
Kwords)
64/32
64/32
64/32
32/16
32/16
64/32
64/32
64/32
16/8
16/8
8/4
8/4
8/4
8/4
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
details on using the autoselect mode.
3A000h–3BFFFh
3C000h–3FFFFh
00000h–0FFFFh
10000h–1FFFFh
20000h–2FFFFh
08000h–0FFFFh
10000h–1FFFFh
20000h–2FFFFh
30000h–3FFFFh
Address Range
30000h–37FFFh
38000h–39FFFh
Address Range
00000h–03FFFh
04000h–05FFFh
06000h–07FFFh
Address Range (in hexadecimal)
Address Range (in hexadecimal)
(x8)
(x8)
ID
. See “Command Definitions” for
1C000h–1CFFFh
1D000h–1DFFFh
1E000h–1FFFFh
08000h–0FFFFh
18000h–1BFFFh
08000h–0FFFFh
18000h–1FFFFh
Address Range
00000h–07FFFh
10000h–17FFFh
Address Range
00000h–01FFFh
02000h–02FFFh
03000h–03FFFh
04000h–07FFFh
10000h–17FFFh
(x16)
(x16)