M58PR256LE datasheet(35/119 Pages) STMICROELECTRONICS

35 / 119 page

M58PR256LE, M58PR512LE, M58PR001LE

Command interface

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4.22

Suspend EFA Block command

The Suspend EFA Block command pauses a program or erase EFA block operation. The

command can be addressed to any bank. The Resume EFA Block command is required to

restart the suspended operation.

One bus write cycle is required to issue the Suspend EFA Block command. Once the

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

are set to '1'.

The following commands are accepted during Suspend EFA Block:

–

Resume EFA Block

–

Read Array

–

Read EFA Block (data from erase-suspended blocks or program-suspended

words is not valid)

–

Read Status Register

–

Read Electronic Signature

–

Read CFI Query.

Additionally, if the suspended operation was an erase EFA block operation then the following

commands are also accepted:

–

Clear Status Register

–

Set Configuration Register

–

Program EFA Block (except in the erase-suspended block)

–

Program and Buffer Program in the main array

–

Block Lock

–

Block Lock-down

–

Block Unlock

–

EFA Block Lock

–

EFA Block Lock-down

–

EFA Block Unlock

During Suspend EFA Block the EFA block being erased can be protected by issuing the EFA

Block Lock or EFA Block Lock-down commands. When the Resume EFA Block command is

issued, the operation is resumed and completes. The suspend EFA block operation can be

repeated.

For example, it is possible to suspend an erase EFA block operation, to start a program EFA

block operation, to suspend the program operation, and then read EFA locations.

If a Program EFA Block command is issued during a suspend EFA block operation, the

erase EFA block operation cannot be resumed until the program operation has completed.

The state of the bank where the command was issued do not change.

Refer to Section 11 for detailed information about simultaneous operations allowed during a

suspend EFA block operation.

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