ES29DL320 datasheet(2/59 Pages) EXCELSEMI

2 / 59 page

ES I

Rev. 0E May 25, 2006

ES29DL320

Excel Semiconductor inc.

ADVANCED INFORMATION

The ES29DL320 is a 32 megabit, 3.0 volt-only flash

memory device, organized as 4M x 8 bits (Byte

mode) or 2M x 16 bits (Word mode) which is config-

urable by BYTE#. Eight boot sectors and sixty three

main sectors with uniform size are provided : 8K

bytes x 8 and 64K bytes x 63. The device is manu-

factured with ESI’s proprietary, high performance

and highly reliable 0.18um CMOS flash technology.

The device can be programmed or erased in-sys-

tem with standard 3.0 Volt Vcc supply (2.7V-3.6V)

and can also be programmed in standard EPROM

programmers. The device offers minimum endur-

ance of 100,000 program/erase cycles and more

than 20 years of data retention.

The ES29DL320 offers access time as fast as

70ns or 90ns, allowing operation of high-speed

microprocessors without wait states. Three sepa-

rate control pins are provided to eliminate bus con-

tention : chip enable (CE#), write enable (WE#) and

output enable (OE#).

All program and erase operation are automatically

and internally performed and controlled by embed-

ded program/erase algorithms built in the device.

The device automatically generates and times the

necessary high-voltage pulses to be applied to the

cells, performs the verification, and counts the num-

ber of sequences. Some status bits (DQ7, DQ6 and

DQ5) read by data# polling or toggling between

consecutive read cycles provide to the users the

internal status of program/erase operation: whether

it is successfully done or still being progressed.

Extra Security Sector of 256 bytes

In the device, an extra security sector of 256 bytes

is provided to customers. This extra sector can be

used for various purposes such as storing ESN

(Electronic Serial Number) or customer’s security

codes. Once after the extra sector is written, it can

be permanently locked by the device manufacturer(

factory-locked) or a customer(customer-lockble).

At the same time, a lock indicator bit (DQ7) is per-

manently set to a 1 if the part is factory- locked, or

set to 0 if it is customer-lockable.

Therefore, this lock indicator bit (DQ7) can be prop-

erly used to avoid that any customer-lockable part is

used to replace a factory-locked part. The extra

security sector is an extra memory space for cus-

tomers when it is used as a customer-lockable ver-

sion. So, it can be read and written like any other

sectors. But it should be noted that the number of E/

W(Erase and Write) cycles is limited to 300 times

(maximum) only in the Security Sector.

Special services such as ESN and factory-locked

are available to customers ( ESI’s Special-Code

service ) The ES29DL320 is completely compatible

with the JEDEC standard command set of single

power supply Flash. Commands are written to the

internal command register using standard write tim-

ings of microprocessor and data can be read out

from the cell array in the device with the same way

as used in other EPROM or flash devices.

Simultaneous Read / Write Operation

The simultaneous read / write architecture provides

simultaneous operation by dividing the memory

space into multi-bank. Sector addresses are fixed,

system software can be used to form user-defined

bank groups.

During an erase / program operation, any of the non-

busy banks may be read from. Note that only two

banks can operate simultaneously. The device

allows a host system to program or erase in one

bank, then immediately and simultaneously read

from the other bank, with zero latency. This releases

the system from waiting for the completion of pro-

gram or erase operations.

The ES29DL320 can be organized as either a top or

bottom boot sector configuration.

GENERAL PRODUCT DESCRIPTION

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