s29ns01gs Meet Spansion Inc., s29ns01gs Datasheet - Page 43

• Manufacturer Part Number: s29ns01gs
• Description: S29ns01gs 1024 Megabit 128 Megabyte 16-bit Data Width, Burst Access, Simultaneous Read/write, 1.8 Volt-only Flash Memory In 65 Nm Mirrorbit Technology
• Manufacturer: Meet Spansion Inc.

April 20, 2009 S29NS-S_00_02
7.9.2
Erase Suspend/Erase Resume Commands
The Erase Suspend command allows the system to interrupt a sector erase operation and then read data
from, or program data to, the device. This command is valid only during the sector erase operation.
When the Erase Suspend command is written during the sector erase operation, the device requires a
maximum of tESL (erase suspend latency) to suspend the erase operation and update the status bits to
indicate the device is ready and in the suspend mode. The system should read the Status Register to
determine if the device is still actively erasing or is erase-suspended. Refer to
information on these status bits.
After the erase operation has been suspended, the bank is in the erase-suspend mode. The system can read
data from or program data to the device. Reading at any address within erase-suspended sectors produces
undetermined data.
After an erase-suspended program operation is complete, the bank returns to the erase-suspend mode. The
system can determine the status of the program operation by reading the Status Register, just as in the
standard program operation.
Accesses and commands that are valid during Erase Suspend are:
To resume the sector erase operation, the system must write the Erase Resume command. The device will
revert to erasing and the status bits will be updated. Further writes of the Resume command are ignored.
Another Erase Suspend command can be written after the chip has resumed erasing. Erase operations may
be interrupted as often as necessary but in order for an erase operation to progress to completion there must
be some periods of time between resume and the next suspend command greater than or equal to t
Section 10.7.5, Erase and Programming Performance on page
Read to any other non-suspended sector
Program to any other non-suspended sector
Status Read command
Sector Lock/Unlock command
Erase Resume command
D a t a
S h e e t
S29NS-S MirrorBit
( P r e l i m i n a r y )
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Flash Family
66.
Status Register on page 25
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