M58LT128GST datasheet(25/98 Pages) STMICROELECTRONICS

25 / 98 page

M58LT128GST, M58LT128GSB

4 Command Interface

25/98

4.10

Program/Erase Suspend command

The Program/Erase Suspend command is used to pause a Program or Block Erase operation.

The command can be addressed to any bank.

The Program/Erase Resume command is required to restart the suspended operation.

One bus write cycle is required to issue the Program/Erase Suspend command. Once the

Program/Erase Controller has paused bits SR7, SR6 and/ or SR2 of the Status Register will be

set to ‘1’.

The following commands are accepted during Program/Erase Suspend:

●

Program/Erase Resume

●

Read Array (data from erase-suspended block or program-suspended Word is not valid)

●

Read Status Register

●

Read Electronic Signature

●

Read CFI Query.

In addition, if the suspended operation was a Block Erase then the following commands are

also accepted:

●

Clear Status Register

●

Program (except in erase-suspended block)

●

Buffer Program (except in erase suspended blocks)

It is possible to accumulate multiple suspend operations. For example: suspend an erase

operation, start a program operation, suspend the program operation, then read the array.

If a Program command is issued during a Block Erase Suspend, the erase operation cannot be

resumed until the program operation has completed.

The Program/Erase Suspend command does not change the read mode of the banks. If the

suspended bank was in Read Status Register, Read Electronic signature or Read CFI Query

mode the bank remains in that mode and outputs the corresponding data.

Refer to Dual Operations section for detailed information about simultaneous operations

allowed during Program/Erase Suspend.

During a Program/Erase Suspend, the device can be placed in standby mode by taking Chip

Enable to VIH. Program/erase is aborted if Reset, RP, goes to VIL.

See Appendix C, Figure 21: Program Suspend & Resume Flowchart and Pseudo Code, and

Figure 23: Erase Suspend & Resume Flowchart and Pseudo Code, for flowcharts for using the

Program/Erase Suspend command.

4.11

Program/Erase Resume command

The Program/Erase Resume command is used to restart the program or erase operation

suspended by the Program/Erase Suspend command. One Bus Write cycle is required to issue

the command. The command can be issued to any address.

The Program/Erase Resume command does not change the read mode of the banks. If the

suspended bank was in Read Status Register, Read Electronic signature or Read CFI Query

mode the bank remains in that mode and outputs the corresponding data.

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