M29W008ET datasheet(17/43 Pages) STMICROELECTRONICS

17 / 43 page

M29W008ET, M29W008EB

4 Command interface

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Endurance Cycles). Once the Program/Erase Controller has stopped the memory will be set to

Read mode and the Erase will be suspended. If the Erase Suspend command is issued during

the period when the memory is waiting for an additional block (before the Program/Erase

Controller starts) then the Erase is suspended immediately and will start immediately when the

Erase Resume Command is issued. It is not possible to select any further blocks to erase after

the Erase Resume.

During Erase Suspend it is possible to Read and Program cells in blocks that are not being

erased; both Read and Program operations behave as normal on these blocks. If any attempt

is made to program in a protected block or in the suspended block then the Program command

is ignored and the data remains unchanged. The Status Register is not read and no error

condition is given. Reading from blocks that are being erased will output the Status Register.

It is also possible to issue the Auto Select, during an Erase Suspend. The Read/Reset

command must be issued to return the device to Read Array mode before the Resume

command will be accepted.

4.10

Erase Resume Command

The Erase Resume command must be used to restart the Program/Erase Controller from

Erase Suspend. An erase can be suspended and resumed more than once.

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