JS28F320J3F75 datasheet(41/67 Pages) NUMONYX

41 / 67 page

Numonyx® Embedded Flash Memory (J3 65 nm) Single Bit per Cell (SBC)

Datasheet

programming operations, rendering array contents at the addressed location(s)

indeterminate.

To suspend an on-going erase or program operation, issue the Suspend command to

any device address. The program or erase operation suspends at pre-determined points

during the operation after a delay of tSUSP. Suspend is achieved whenSTS (in RY/BY#

mode) goes high, SR[7,6] = 1 (erase-suspend) or SR[7,2] = 1 (program-suspend).

Note:

Issuing the Suspend command does not change the read mode of the device. The

device will be in Read Status Register mode from when the erase or program command

was first issued, unless the read mode was changed prior to issuing the Suspend

command.

Not all commands are allowed when the device is suspended. Table 25 shows which

device commands are allowed during Program Suspend or Erase Suspend.

During Suspend, array-read operations are not allowed in blocks being erased or

programmed.

A block-erase under program-suspend is not allowed. However, word-program under

erase-suspend is allowed, and can be suspended. This results in a simultaneous erase-

suspend/ program-suspend condition, indicated by SR[7,6,2] = 1.

Table 24: Suspend and Resume Command Bus-Cycles

Command

Setup Write Cycle

Confirm Write Cycle

Address Bus

Data Bus

Address Bus

Data Bus

Suspend

Device Address

00B0h

—

Resume

Device Address

00D0h

—

Table 25: Valid Commands During Suspend

Device Command

Program Suspend

Erase Suspend

STS Configuration

Allowed

Read Array

Allowed

Read Status Register

Allowed

Clear Status Register

Allowed

Read Device Information

Allowed

CFI Query

Allowed

Word/Byte Program

Not Allowed

Allowed

Buffered Program

Not Allowed

Allowed

Block Erase

Not Allowed

Program Suspend

Not Allowed

Allowed

Erase Suspend

Not Allowed

Program/Erase Resume

Allowed

Lock Block

Not Allowed

Unlock Block

Not Allowed

Program OTP Register

Not Allowed

Blank Check

Not Allowed

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