January 23, 2007 Am29SL400C_00_A6

Am29SL400C

11

D A TA

SH EE T

Table 2.

Am29SL400CT Top Boot Block Sector Address Table

Table 3.

Am29SL400CB Bottom Boot Block Sector Address Table

Note for Tables 2 and 3: Address range is A17:A-1 in byte mode and A17:A0 in word mode. See “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 program-

ming algorithm. However, the autoselect codes can also be

accessed in-system through the command register.

When using programming equipment, the autoselect mode

A0 must be as shown in Table 4 on page 12. In addition,

when verifying sector protection, the sector address must

appear on the appropriate highest order address bits (see

Table 2 on page 11 and Table 3 on page 11). Table 4 shows

the remaining address bits that are don’t care. When all nec-

essary 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 regis-

ter, as shown in Table 5 on page 18. This method does not

tails on using the autoselect mode.

Sector

A17

A16

A15

A14

A13

A12

Sector Size

(Kbytes/

Kwords)

Address Range (in hexadecimal)

(x8)

Address Range

(x16)

Address Range

SA0

0

0

0

X

X

X

64/32

00000h–0FFFFh

00000h–07FFFh

SA1

0

0

1

X

X

X

64/32

10000h–1FFFFh

08000h–0FFFFh

SA2

0

1

0

X

X

X

64/32

20000h–2FFFFh

10000h–17FFFh

SA3

0

1

1

X

X

X

64/32

30000h–3FFFFh

18000h–1FFFFh

SA4

1

0

0

X

X

X

64/32

40000h–4FFFFh

20000h–27FFFh

SA5

1

0

1

X

X

X

64/32

50000h–5FFFFh

28000h–2FFFFh

SA6

1

1

0

X

X

X

64/32

60000h–6FFFFh

30000h–37FFFh

SA7

1110

X

X

32/16

70000h–77FFFh

38000h–3BFFFh

SA8

111100

8/4

78000h–79FFFh

3C000h–3CFFFh

SA9

111101

8/4

7A000h–7BFFFh

3D000h–3DFFFh

SA10

11111

X

16/8

7C000h–7FFFFh

3E000h–3FFFFh

Sector

A17

A16

A15

A14

A13

A12

Sector Size

(Kbytes/

Kwords)

Address Range (in hexadecimal)

(x8)

Address Range

(x16)

Address Range

SA0

00000

X

16/8

00000h–03FFFh

00000h–01FFFh

SA1

000010

8/4

04000h–05FFFh

02000h–02FFFh

SA2

000011

8/4

06000h–07FFFh

03000h–03FFFh

SA3

0001

X

X

32/16

08000h–0FFFFh

04000h–07FFFh

SA4

0

0

1

X

X

X

64/32

10000h–1FFFFh

08000h–0FFFFh

SA5

0

1

0

X

X

X

64/32

20000h–2FFFFh

10000h–17FFFh

SA6

0

1

1

X

X

X

64/32

30000h–3FFFFh

18000h–1FFFFh

SA7

1

0

0

X

X

X

64/32

40000h–4FFFFh

20000h–27FFFh

SA8

1

0

1

X

X

X

64/32

50000h–5FFFFh

28000h–2FFFFh

SA9

1

1

0

X

X

X

64/32

60000h–6FFFFh

30000h–37FFFh

SA10

1

1

1

X

X

X

64/32

70000h–7FFFFh

38000h–3FFFFh