29PL256N datasheet(38/74 Pages) SPANSION

38 / 74 page

S29PL-N MirrorBit

™ Flash Family

S29PL-N_00_A5 June 6, 2007

Data

Sheet

(Pre limin ar y)

Figure 7.4 Write Operation Status Flowchart

Notes

1. DQ6 is toggling if Read2 DQ6 does not equal Read3 DQ6.

2. DQ2 is toggling if Read2 DQ2 does not equal Read3 DQ2.

3. May be due to an attempt to program a 0 to 1. Use the RESET command to exit operation.

4. Write buffer error if DQ1 of last read =1.

5. Invalid state, use RESET command to exit operation.

6. Valid data is the data that is intended to be programmed or all 1's for an erase operation.

7. Data polling algorithm valid for all operations except advanced sector protection.

START

DQ7=valid

data?

YES

DQ5=1?

YES

Write Buffer

Programming?

YES

Device BUSY,

Re-Poll

DQ1=1?

YES

Read3 DQ1=1

AND DQ7

≠

Valid Data?

YES

(Note 4)

Write Buffer

Operation Failed

DQ6

toggling?

YES

TIMEOUT

(Note 1)

(Note 3)

Programming

Operation?

DQ6

toggling?

YES

DQ2

toggling?

YES

Erase

Operation

Complete

Device in

Erase/Suspend

Mode

Program

Operation

Failed

DEVICE

ERROR

Erase

Operation

Complete

Read3= valid

data?

YES

Device BUSY,

Re-Poll

Device BUSY,

Re-Poll

Device BUSY,

Re-Poll

(Note 1)

(Note 2)

(Note 6)

(Note 5)

29PL256N Datasheet(PDF) 38 Page - SPANSION

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