AM29F400BB-70SD Spansion Inc., AM29F400BB-70SD Datasheet - Page 12

• Manufacturer Part Number: AM29F400BB-70SD
• Description: Flash Memory IC
• Manufacturer: Spansion Inc.

Specifications of AM29F400BB-70SD

• Memory Size: 4Mbit
• Memory Configuration: 512K X 8 / 256K X 16
• Ic Interface Type: Parallel
• Access Time: 70ns
• Memory Case Style: SOIC
• No. Of Pins: 44
• Operating Temperature Range: 0°C To +70°C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Note:
Address range is A17:A-1 in byte mode and A17:A0 in word mode.See the “Word/Byte Configuration” section for more
information.
Autoselect Mode
The autoselect mode provides manufacturer and
device 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,
10
Sector
Sector
SA10
SA10
SA0
SA1
SA2
SA3
SA4
SA5
SA6
SA7
SA8
SA9
SA0
SA1
SA2
SA3
SA4
SA5
SA6
SA7
SA8
SA9
A17
A17
0
0
0
0
1
1
1
1
1
1
1
0
0
0
0
0
0
0
1
1
1
1
ID
A16
A16
0
0
1
1
0
0
1
1
1
1
1
0
0
0
0
0
1
1
0
0
1
(11.5 V to 12.5 V) on address pin
1
Table 3. Am29F400BB Bottom Boot Block Sector Address Table
Table 2. Am29F400BT Top Boot Block Sector Address Table
A15
A15
0
1
0
1
0
1
0
1
1
1
1
0
0
0
0
1
0
1
0
1
0
1
A14
A14
X
X
X
X
X
X
X
0
1
1
1
X
X
X
X
X
X
X
0
0
0
1
A13
A13
X
X
X
X
X
X
X
X
0
0
1
1
1
X
X
X
X
X
X
X
X
0
D A T A
A12
A12
X
X
X
X
X
X
X
X
0
1
X
X
X
X
X
X
X
X
X
X
0
1
Am29F400B
(Kbytes/ Kwords)
(Kbytes/Kwords)
S H E E T
Sector Size
Sector Size
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.
64/32
64/32
64/32
64/32
64/32
64/32
64/32
32/16
32/16
64/32
64/32
64/32
64/32
64/32
64/32
64/32
16/8
16/8
8/4
8/4
8/4
8/4
00000h–03FFFh
08000h–0FFFFh
10000h–1FFFFh
20000h–2FFFFh
30000h–3FFFFh
40000h–4FFFFh
50000h–5FFFFh
60000h–6FFFFh
70000h–7FFFFh
Address Range
04000h–05FFFh
06000h–07FFFh
7A000h–7BFFFh
7C000h–7FFFFh
00000h–0FFFFh
10000h–1FFFFh
20000h–2FFFFh
30000h–3FFFFh
40000h–4FFFFh
50000h–5FFFFh
60000h–6FFFFh
Address Range
70000h–77FFFh
78000h–79FFFh
Address Range (in hexadecimal)
Address Range (in hexadecimal)
ID
(x8)
. See “Command Definitions” for
(x8)
21505E5 November 1, 2006
3C000h–3CFFFh
3D000h–3DFFFh
Address Range
00000h–01FFFh
02000h–02FFFh
03000h–03FFFh
04000h–07FFFh
08000h–0FFFFh
10000h–17FFFh
18000h–1FFFFh
20000h–27FFFh
28000h–2FFFFh
30000h–37FFFh
38000h–3FFFFh
08000h–0FFFFh
18000h–1FFFFh
28000h–2FFFFh
38000h–3BFFFh
3E000h–3FFFFh
Address Range
00000h–07FFFh
10000h–17FFFh
20000h–27FFFh
30000h–37FFFh
(x16)
(x16)