AM29LV033C datasheet(24/49 Pages) AMD

24 / 49 page

Am29LV033C

22268B5 September 12, 2006

DA TA

SH EET

After an erase-suspended program operation is com-

plete, the system can once again read array data

within non-suspended sectors. The system deter-

mines the status of the program operation using the

DQ7 or DQ6 status bits, just as in the standard pro-

gram operation. See “Write Operation Status” on

page 26 for more information.

The system may also write the autoselect command

sequence when the device is in the Erase Suspend

mode. The device allows reading autoselect codes

even at addresses within erasing sectors, since the

codes are not stored in the memory array. When the

device exits the autoselect mode, the device reverts to

the Erase Suspend mode, and is ready for another

valid operation. See “Autoselect Command Sequence”

on page 21 for more information.

The system must write the Erase Resume command

(address bits are “don’t care”) to exit the erase sus-

pend mode and continue the sector erase operation.

Further writes of the Resume command are ignored.

Another Erase Suspend command can be written after

the device has resumed erasing.

Notes:

1. See Table 9, on page 25 for erase command sequence.

2. See “DQ3: Sector Erase Timer” on page 28 for more

information.

Figure 4.

Erase Operation

START

Write Erase

Command Sequence

Data Poll

from System

Data = FFh?

Yes

Erasure Completed

Embedded

Erase

algorithm

in progress

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