S29GL01GS datasheet(31/104 Pages) SPANSION

31 / 104 page

March 16, 2012 S29GL_128S_01GS_00_06

GL-S MirrorBit® Family

Data

She e t

Legend:

SA = Sector Address (Non-Sector Address bits are don't care. Any address within the Sector is sufficient.)

WBL = Write Buffer Location (MUST be within the boundaries of the Write-Buffer-Line specified by the Starting Address.)

WC =Word Count

PD = Program Data

5.3.2

Program Suspend / Program Resume Commands

The Program Suspend command allows the system to interrupt an embedded programming operation so that

data can read from any non-suspended Line. When the Program Suspend command is written during a

programming process, the device halts the programming operation within tPSL (program suspend latency)

and updates the status bits. Addresses are don't-cares when writing the Program Suspend command.

There are two commands available for program suspend. The legacy combined Erase / Program suspend

command (B0h command code) and the separate Program Suspend command (51h command code). There

are also two commands for Program resume. The legacy combined Erase / Program resume command (30h

command code) and the separate Program Resume command (50h command code). It is recommended to

use the separate program suspend and resume commands for programming and use the legacy combined

command only for erase suspend and resume.

After the programming operation has been suspended, the system can read array data from any non-

suspended Line. The Program Suspend command may also be issued during a programming operation while

an erase is suspended. In this case, data may be read from any addresses not in Erase Suspend or Program

Suspend.

After the Program Resume command is written, the device reverts to programming and the status bits are

updated. The system can determine the status of the program operation by reading the Status Register or

using Data Polling. Refer to Status Register on page 37 for information on these status bits. Refer to Data

Polling Status on page 38 for more information.

Accesses and commands that are valid during Program Suspend are:

 Read to any other non-erase-suspended sector

 Read to any other non-program-suspended Line

 Status Read command

 Exit ASO or Command Set Exit

 Program Resume command

The system must write the Program Resume command to exit the Program Suspend mode and continue the

programming operation. Further writes of the Program Resume command are ignored. Another Program

Suspend command can be written after the device has resumed programming.

Table 5.1 Write Buffer Programming Command Sequence

Sequence

Address

Data

Comment

Issue Unlock Command 1

555/AAA

Issue Unlock Command 2

2AA/555

Issue Write to Buffer Command at Sector

Address

0025h

Issue Number of Locations at Sector

Address

WC = number of words to program - 1

Example: WC of 0 = 1 words to pgm

WC of 1 = 2 words to pgm

Load Starting Address / Data pair

Starting

Address

Selects Write-Buffer-Page and loads first Address/Data Pair.

Load next Address / Data pair

WBL

All addresses MUST be within the selected write-buffer-

page boundaries, and have to be loaded in sequential order.

Load LAST Address/Data pair

WBL

All addresses MUST be within the selected write-buffer-

page boundaries, and have to be loaded in sequential order.

Issue Write Buffer Program Confirm at

Sector Address

0029h

This command MUST follow the last write buffer location

loaded, or the operation will ABORT.

Device goes busy.

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