SST29EE010 datasheet(4/27 Pages) SST

4 / 27 page

304-04 12/97

1 Megabit Page Mode EEPROM

SST29EE010, SST29LE010, SST29VE010

FUNCTIONAL BLOCK DIAGRAM OF SST 29EE010/29LE010/29VE010

304 MSW B1.0

Single power supply reprogrammable nonvolatile

memories may be unintentionally altered. SST strongly

recommends that Software Data Protection (SDP) al-

ways be enabled. The 29EE010/29LE010/29VE010

should be programmed using the SDP command se-

quence. SST recommends the SDP Disable Command

Sequence not be issued to the device prior to writing.

Please refer to the following Application Notes located at

the back of this databook for more information on using

SDP:

•

Protecting Against Unintentional Writes When Using

Single Power Supply Flash Memories

•

The Proper Use of JEDEC Standard Software Data

Protection

Product Identification

The product identification mode identifies the device as

the 29EE010/29LE010/29VE010 and manufacturer as

SST. This mode may be accessed by hardware or

software operations. The hardware operation is typically

used by a programmer to identify the correct algorithm

for the 29EE010/29LE010/29VE010. Users may wish to

use the software product identification operation to iden-

tify the part (i.e. using the device code) when using

multiple manufacturers in the same socket. For details,

see Table 3 for hardware operation or Table 4 for

software operation, Figure 10 for the software ID entry

and read timing diagram and Figure 17 for the ID entry

command sequence flowchart. The manufacturer and

device codes are the same for both operations.

Product Identification Mode Exit

In order to return to the standard read mode, the Soft-

ware Product Identification mode must be exited. Exiting

is accomplished by issuing the Software ID Exit (reset)

operation, which returns the device to the read operation.

The Reset operation may also be used to reset the

device to the read mode after an inadvertent transient

condition that apparently causes the device to behave

abnormally, e.g. not read correctly. See Table 4 for

software command codes, Figure 11 for timing wave-

form and Figure 17 for a flowchart.

Control Logic

16 - A0

CE#

OE#

WE#

7 - DQ0

1,048,576 Bit

EEPROM

Cell Array

Y-Decoder and Page Latches

I/O Buffers and Data Latches

Address buffer & Latches

X-Decoder

304 PGM T1.1

TABLE 1: PRODUCT IDENTIFICATION TABLE

Byte

Data

Manufacturer’s Code

0000 H

BF H

29EE010 Device Code

0001 H

07 H

29LE010 Device Code

0001 H

08 H

29VE010 Device Code

0001 H

08 H

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