AM29F200AB-120EC AMD [Advanced Micro Devices], AM29F200AB-120EC Datasheet - Page 10

• Manufacturer Part Number: AM29F200AB-120EC
• Description: 2 Megabit (256 K x 8-Bit/128 K x 16-Bit) CMOS 5.0 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
Autoselect Codes (High Voltage Method) table. In ad-
dition, when verifying sector protection, the sector ad-
10
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
0
0
0
0
1
0
1
Table 3. Am29F200B Bottom Boot Block Sector Address Table
Table 2. Am29F200T 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
X
X
X
X
0
0
1
0
1
1
P R E L I M I N A R Y
A12
A12
X
X
X
X
X
X
X
X
X
X
0
1
0
1
Am29F200A
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
dress must appear on the appropriate highest order
address bits. Refer to the corresponding Sector Ad-
dress Tables. The Command Definitions table shows
the remaining address bits that are don’t care. When all
necessary bits have been set as required, the program-
ming 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 the Command Defini-
tions table. This method does not require V
toselect Command Sequence” for 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)
1C000h–1CFFFh
1D000h–1DFFFh
18000h–1BFFFh
1E000h–1FFFFh
00000h–07FFFh
08000h–0FFFFh
10000h–17FFFh
00000h–01FFFh
02000h–02FFFh
03000h–03FFFh
04000h–07FFFh
08000h–0FFFFh
10000h–17FFFh
18000h–1FFFFh
Address Range
Address Range
(x16)
(x16)
ID
. See “Au-