D640D90VF datasheet(15/54 Pages) AMD

15 / 54 page

December 13, 2005

Am29DL640D

Note: The address range is A21:A-1 in byte mode (BYTE#=V

IL) or A21:A0 in word mode (BYTE#=VIH).

Table 3.

Bank Address

Table 4.

Secured Silicon Sector Addresses

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-

ment to au tomatically ma tch a device to be

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

ID (8.5 V to 12.5 V) on address pin A9.

Address pins A6, A1, and A0 must be as shown in

Table 5. In addition, when verifying sector protection,

the sector address must appear on the appropriate

highest order address bits (see Table 2). Table 5

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. However, the

autoselect codes can also be accessed in-system

through the command register, for instances when the

Am29DL640 is erased or programmed in a system

without access to high voltage on the A9 pin. The com-

mand sequence is illustrated in Table 12. Note that if a

Bank Address (BA) on address bits A21, A20, and A19

is asserted during the third write cycle of the autose-

lect command, the host system can read autoselect

data that bank and then immediately read array data

from the other bank, without exiting the autoselect

mode.

Bank 4

SA119

1110000xxx

64/32

700000h–70FFFFh

380000h–387FFFh

SA120

1110001xxx

64/32

710000h–71FFFFh

388000h–38FFFFh

SA121

1110010xxx

64/32

720000h–72FFFFh

390000h–397FFFh

SA122

1110011xxx

64/32

730000h–73FFFFh

398000h–39FFFFh

SA123

1110100xxx

64/32

740000h–74FFFFh

3A0000h–3A7FFFh

SA124

1110101xxx

64/32

750000h–75FFFFh

3A8000h–3AFFFFh

SA125

1110110xxx

64/32

760000h–76FFFFh

3B0000h–3B7FFFh

SA126

1110111xxx

64/32

770000h–77FFFFh

3B8000h–3BFFFFh

SA127

1111000xxx

64/32

780000h–78FFFFh

3C0000h–3C7FFFh

SA128

1111001xxx

64/32

790000h–79FFFFh

3C8000h–3CFFFFh

SA129

1111010xxx

64/32

7A0000h–7AFFFFh

3D0000h–3D7FFFh

SA130

1111011xxx

64/32

7B0000h–7BFFFFh

3D8000h–3DFFFFh

SA131

1111100xxx

64/32

7C0000h–7CFFFFh

3E0000h–3E7FFFh

SA132

1111101xxx

64/32

7D0000h–7DFFFFh

3E8000h–3EFFFFh

SA133

1111110xxx

64/32

7E0000h–7EFFFFh

3F0000h–3F7FFFh

SA134

1111111000

8/4

7F0000h–7F1FFFh

3F8000h–3F8FFFh

SA135

1111111001

8/4

7F2000h–7F3FFFh

3F9000h–3F9FFFh

SA136

1111111010

8/4

7F4000h–7F5FFFh

3FA000h–3FAFFFh

SA137

1111111011

8/4

7F6000h–7F7FFFh

3FB000h–3FBFFFh

SA138

1111111100

8/4

7F8000h–7F9FFFh

3FC000h–3FCFFFh

SA139

1111111101

8/4

7FA000h–7FBFFFh

3FD000h–3FDFFFh

SA140

1111111110

8/4

7FC000h–7FDFFFh

3FE000h–3FEFFFh

SA141

1111111111

8/4

7FE000h–7FFFFFh

3FF000h–3FFFFFh

Bank

A21–A19

000

001, 010, 011

100, 101, 110

111

Device

Sector Size

(x8)

Address Range

(x16)

Address Range

Am29DL640D

256 bytes

000000h–0000FFh

00000h–0007Fh

Table 2.

Am29DL640D Sector Architecture (Continued)

Bank

Sector

Sector Address

A21–A12

Sector Size

(Kbytes/Kwords)

(x8)

Address Range

(x16)

Address Range

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