Numonyx® Embedded Flash Memory (J3 65 nm) Single Bit per Cell (SBC)
programming operations, rendering array contents at the addressed location(s)
indeterminate.
Table 24: Suspend and Resume Command Bus-Cycles
Setup Write Cycle
Confirm Write Cycle
Address Bus Data Bus
Command
Address Bus
Data Bus
Suspend
Resume
Device Address
Device Address
00B0h
00D0h
—
—
—
—
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.
Table 25: Valid Commands During Suspend
Device Command
Program Suspend
Erase Suspend
STS Configuration
Read Array
Allowed
Allowed
Allowed
Allowed
Read Status Register
Clear Status Register
Read Device Information
CFI Query
Allowed
Allowed
Allowed
Allowed
Allowed
Allowed
Allowed
Allowed
Word/Byte Program
Buffered Program
Block Erase
Not Allowed
Not Allowed
Not Allowed
Not Allowed
Not Allowed
Allowed
Allowed
Allowed
Not Allowed
Allowed
Program Suspend
Erase Suspend
Not Allowed
Allowed
Program/Erase Resume
Lock Block
Not Allowed
Not Allowed
Not Allowed
Not Allowed
Not Allowed
Not Allowed
Not Allowed
Not Allowed
Unlock Block
Program OTP Register
Blank Check
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.
Datasheet
40
Jan 2011
208032-03
MICRON [ MICRON TECHNOLOGY ]
