S29GL-N datasheet(45/79 Pages) SPANSION

45 / 79 page

November 16, 2007 S29GL-N_01_09

S29GL-N MirrorBit® Flash Family

Data

She e t

Figure 10.1 Write Buffer Programming Operation

Notes

1. When Sector Address is specified, any address in the selected sector is acceptable. However, when loading Write-Buffer address

locations with data, all addresses must fall within the selected Write-Buffer Page.

2. DQ7 may change simultaneously with DQ5. Therefore, DQ7 should be verified.

3. If this flowchart location was reached because DQ5= 1, then the device FAILED. If this flowchart location was reached because DQ1= 1,

then the Write to Buffer operation was ABORTED. In either case, the proper reset command must be written before the device can begin

another operation. If DQ1= 1, write the Write-Buffer-Programming-Abort-Reset command. if DQ5= 1, write the Reset command.

4. See Table 10.1 on page 51 and Table 10.3 on page 53 for command sequences required for write buffer programming.

Write “Write to Buffer”

command and

Sector Address

Write number of addresses

to program minus 1(WC)

and Sector Address

Write program buffer to

flash sector address

Write first address/data

Write to a different

sector address

FAIL or ABORT

PASS

Read DQ7 - DQ0 at

Last Loaded Address

Read DQ7 - DQ0 with

address = Last Loaded

Address

Write next address/data pair

WC = WC - 1

WC = 0 ?

Part of “Write to Buffer”

Command Sequence

Yes

Abort Write to

Buffer Operation?

DQ7 = Data?

DQ5 = 1?

DQ1 = 1?

Write to buffer ABORTED.

Must write “Write-to-buffer

Abort Reset” command

sequence to return

to read mode.

(Note 2)

(Note 3)

(Note 1)

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