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EN29LV640

Write Operation Status

Operation

Standard

Mode

Sector

Erase

Suspend

Mode

Embedded Program

Algorithm

Embedded Erase Algorithm

Reading within Erase

Suspended Sector

Reading within Non-Erase

Suspended Sector

Erase-Suspend Program

DQ7

DQ7#

0

1

Data

DQ7#

DQ6

Toggle

No

Toggle

Data

Toggle

DQ5

0

Data

0

DQ3

N/A

1

N/A

Data

N/A

DQ2

No

toggle

Toggle

Data

N/A

RY/BY#

0

1

0

Table 10. Status Register Bits

DQ

Name

Logic Level

鈥?鈥?/div>

7

Definition

Erase Complete or erased sector in Sector Erase

Suspend

Erase On-Going

Program Complete or data of non-erased sector

during Sector Erase Suspend

Program On-Going

Erase or Program On-going

Read during Sector Erase Suspend

Erase Complete

Program or Erase Error

Program or Erase On-going

Erase operation start

Erase timeout period on-going

Chip Erase, Sector Erase or Read within Erase-

Suspended sector. (When DQ5=1, Erase Error due

to currently addressed Sector or Program on

Erase-Suspended sector

Read on addresses of non Erase-Suspend sectors

DATA#

POLLING

鈥?鈥?/div>

DQ7

DQ7#

鈥?1-0-1-0-1-0-1-鈥?/div>

6

TOGGLE BIT

DQ6

鈥?1-1-1-1-1-1-1-鈥?/div>

鈥?鈥?/div>

5

ERROR BIT

SECTOR

ERASE TIME

BIT

3

鈥?鈥?/div>

2

TOGGLE BIT

鈥?1-0-1-0-1-0-1-鈥?/div>

DQ2

Notes:

DQ7: DATA# Polling: indicates the P/E status check during Program or Erase, and on completion before checking bits DQ5

for Program or Erase Success.

DQ6: Toggle Bit: remains at constant level when P/E operations are complete or erase suspend is acknowledged.

Successive reads output complementary data on DQ6 while programming or Erase operation are on-going.

DQ5: Error Bit: set to 鈥?鈥?if failure in programming or erase

DQ3: Sector Erase Command Timeout Bit: Operation has started. Only possible command is Erase suspend (ES).

DQ2: Toggle Bit: indicates the Erase status and allows identification of the erased Sector.

This Data Sheet may be revised by subsequent versions

or modifications due to changes in technical specifications.

24

漏2005 Eon Silicon Solution, Inc., www.essi.com.tw

Rev. C, Issue Date: 2007/01/23

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