November 2, 2006 21610D5

Am29F032B

11

D A TA

SH EE T

Note: All sectors are 64 Kbytes in size.

Autoselect Mode

The autoselect mode provides manufacturer and de-

vice identification, and sector group protection verifica-

tion, through identifier codes output on DQ7–DQ0.

This mode is primarily intended for programming

equipment to automatically match a device to be pro-

grammed with its corresponding programming algo-

rithm. However, the autoselect codes can also be

accessed in-system through the command register.

When using programming equipment, the autoselect

A9. Address pins A6, A1, and A0 must be as shown in

Table 3. In addition, when verifying sector group pro-

tection, the sector group address must appear on the

appropriate highest order address bits (see Table 4 on

page 12). Table 3 also 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 on page 17.

Refer to the Autoselect Command Sequence section

for more information.

Table 3.

Am29F032B Autoselect Codes

Note: Identifier codes for manufacturer and device IDs exhibit odd parity with DQ7 defined as the parity bit.

SA44

1

0

1

1

0

0

64K

2C0000h–2CFFFFh

SA45

1

0

1

1

0

1

64K

2D0000h–2DFFFFh

SA46

1

0

1

1

1

0

64K

2E0000h–2EFFFFh

SA47

1

0

1

1

1

1

64K

2F0000h–2FFFFFh

SA48

1

1

0

0

0

0

64K

300000h–30FFFFh

SA49

1

1

0

0

0

1

64K

310000h–31FFFFh

SA50

1

1

0

0

1

0

64K

320000h–32FFFFh

SA51

1

1

0

0

1

1

64K

330000h–33FFFFh

SA52

1

1

0

1

0

0

64K

340000h–34FFFFh

SA53

1

1

0

1

0

1

64K

350000h–35FFFFh

SA54

1

1

0

1

1

0

64K

360000h–36FFFFh

SA55

1

1

0

1

1

1

64K

370000h–37FFFFh

SA56

1

1

1

0

0

0

64K

380000h–38FFFFh

SA57

1

1

1

0

0

1

64K

390000h–39FFFFh

SA58

1

1

1

0

1

0

64K

3A0000h–3AFFFFh

SA59

1

1

1

0

1

1

64K

3B0000h–3BFFFFh

SA60

1

1

1

1

0

0

64K

3C0000h–3CFFFFh

SA61

1

1

1

1

0

1

64K

3D0000h–3DFFFFh

SA62

1

1

1

1

1

0

64K

3E0000h–3EFFFFh

SA63

1

1

1

1

1

1

64K

3F0000h–3FFFFFh

Table 2.

Am29F032B Sector Address Table (Sheet 2 of 2)

Sector

A21

A20

A19

A18

A17

A16

Sector Size

Address Range

Description

A21-A18

A17-A10

A9

A8-A7

A6

A5-A2

A1

A0

Identifier Code on

DQ7-DQ0

Manufacturer ID: AMD

X

X

01h

Device ID: Am29F032B

X

X

41h

Sector Group Protection

Verification

Sector

Group

Address

01h (protected)

00h (unprotected)