s29ns01gs Meet Spansion Inc., s29ns01gs Datasheet - Page 41

• 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.

7.9
April 20, 2009 S29NS-S_00_02
7.9.1
Erase Methods
Sector Erase
The sector erase function erases one sector in the memory array. (See
on page
algorithm automatically programs and verifies the selected sector with an all zero data pattern prior to
electrical erase. After a successful sector erase, all locations within the erased sector contain FFFFh. The
system is not required to provide any controls or timings during these operations.
Sector Erase may require two commands; a command to unprotect the sector followed by the sector erase
command itself. The desired sector must already be unlocked or must be unlocked by executing the Sector
Unlock command, and the sector must not be locked by the Sector Lock Range command. In the erase
command write sequence each of the Sector Addresses must match and the lower portion of each address
with the address bit patterns must be correct.
When the Embedded Erase algorithm is complete, the bank returns to idle. Note that while the Embedded
Erase operation is in progress, the system can read data from the non-erasing banks. The system can
determine the status of the erase operation by reading the Status Register. See
for information on these status bits.
Once the sector erase operation has begun, only reading from outside the erase bank, read of Status
Register, and the Erase Suspend command are valid. All other commands are ignored. However, note that a
hardware reset immediately terminates the erase operation. If that occurs, the sector erase command
sequence must be reinitiated once the device has returned to idle state, to ensure data integrity.
See
Program/Erase Operations on page 31
67) The device does not require the system to preprogram prior to erase. The Embedded Erase
D a t a
S h e e t
S29NS-S MirrorBit
( P r e l i m i n a r y )
®
Eclipse
for parameters and timing diagrams.
™
Flash Family
11.1, Command Definitions
Status Register on page 25
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