AM29BL162C datasheet(22/52 Pages) AMD

22 / 52 page

Am29BL162C

22142F9 January 22, 2007

D A TA

SH EET

Figure 3.

Burst Mode Read with 40 MHz CLK, 65 ns tIACC,18 ns tBACC Parameters

Figure 4.

Burst Mode Read with 25 MHz CLK, 70 ns tIACC,24 ns tBACC Parameters

Reset Command

Writing the reset command to the device resets the de-

vice to reading array data. Address bits are don’t care

for this command.

The reset command may be written between the se-

quence cycles in an erase command sequence before

erasing begins. This resets the device to reading array

data. Once erasure begins, however, the device ig-

nores reset commands until the operation is complete.

The reset command may be written between the se-

quence cycles in a program command sequence be-

fore programming begins. This resets the device to

reading array data (also applies to programming in

Erase Suspend mode). Once programming begins,

however, the device ignores reset commands until the

operation is complete.

The reset command may be written between the se-

quence cycles in an autoselect command sequence.

Once in the autoselect mode, the reset command must

be written to return to reading array data (also applies

to autoselect during Erase Suspend).

If DQ5 goes high during a program or erase operation,

writing the reset command returns the device to read-

ing array data (also applies during Erase Suspend).

See “AC Characteristics” for parameters, and to

Figure 17 for the timing diagram.

Autoselect Command Sequence

The autoselect command sequence allows the host

system to access the manufacturer and devices codes,

and determine whether or not a sector is protected.

Table 8 shows the address and data requirements.

CLK

LBA#

BAA#

Data

OE#

Step 1

Step 2

Step 3

25 ns

65 ns

25 ns

18 ns

Da +1

Da +2

18 ns

CLK

LBA#

BAA#

Data

Step 1

Step 2

Step 3

40 ns

70 ns

40 ns

24 ns

Da +1

24 ns

Da +2

Da +3

24 ns

OE#

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