AM29LV200B datasheet(13/46 Pages) AMD

13 / 46 page

October 10, 2006 21521D6

Am29LV200B

D A TA SH EE T

If RESET# is asserted during a program or erase oper-

ation, the RY/BY# pin remains a “0” (busy) until the

internal reset operation is complete, which requires a

time of tREADY (during Embedded Algorithms). The

system can thus monitor RY/BY# to determine whether

the reset operation is complete. If RESET# is asserted

when a program or erase operation is not executing

(RY/BY# pin is “1”), the reset operation is completed

within a time of tREADY (not during Embedded Algo-

rithms). The system can read data tRH after the RESET#

pin returns to VIH.

Refer to the AC Characteristics tables for RESET#

parameters and to Figure 14 for the timing diagram.

Output Disable Mode

When the OE# input is at VIH, output from the device is

disabled. The output pins are placed in the high imped-

ance state.

Table 2.

Am29LV200BT Top Boot Block Sector Address Table

Table 3.

Am29LV200BB Bottom Boot Block Sector Address Table

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.

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 VID (11.5 V to 12.5 V) on address pin

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

Table 4. In addition, when verifying sector protection,

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 VID. See “Am29LV200B Command

Definitions” for details on using the autoselect mode.

Sector

A16

A15

A14

A13

A12

Sector Size

(Kbytes/

Kwords)

Address Range (in hexadecimal)

(x8)

Address Range

(x16)

Address Range

SA0

64/32

00000h–0FFFFh

00000h–07FFFh

SA1

64/32

10000h–1FFFFh

08000h–0FFFFh

SA2

64/32

20000h–2FFFFh

10000h–17FFFh

SA3

32/16

30000h–37FFFh

18000h–1BFFFh

SA4

8/4

38000h–39FFFh

1C000h–1CFFFh

SA5

8/4

3A000h–3BFFFh

1D000h–1DFFFh

SA6

16/8

3C000h–3FFFFh

1E000h–1FFFFh

Sector

A16

A15

A14

A13

A12

Sector Size

(Kbytes/

Kwords)

Address Range (in hexadecimal)

(x8)

Address Range

(x16)

Address Range

SA0

16/8

00000h–03FFFh

00000h–01FFFh

SA1

8/4

04000h–05FFFh

02000h–02FFFh

SA2

8/4

06000h–07FFFh

03000h–03FFFh

SA3

32/16

08000h–0FFFFh

04000h–07FFFh

SA4

64/32

10000h–1FFFFh

08000h–0FFFFh

SA5

64/32

20000h–2FFFFh

10000h–17FFFh

SA6

64/32

30000h–3FFFFh

18000h–1FFFFh

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