km29w32000ts Samsung Semiconductor, Inc., km29w32000ts Datasheet - Page 21

• Manufacturer Part Number: km29w32000ts
• Description: 8-bit Nand Flash Memory
• Manufacturer: Samsung Semiconductor, Inc.

The Erase Suspend allows interruption during any erase operation in order to read or program data to or from another block of
memory. Once an erase process begins, writing the Erase Suspend command (B0H) to the command register suspends the internal
erase process, and the R/B signal return to "1". Erase Suspend Status bit will be also set to "1" when the Status Register is read. At
this time, blocks other than the suspended block can be read or programmed. The Status Register and R/B operation will function as
usual. After the Erase Resume command is written to it, the erase process is restarted from the beginning of the erasing period. The
Erase Suspend Status bit and R/B will return to "0". Refer to Figure 9 for operation sequence.
BLOCK ERASE
The Erase operation can erase on a block(8K Byte) basis. Block address loading is accomplished in two cycles initiated by an Erase
Setup command(60H). Only address A
The Erase Confirm command(D0H) following the block address loading initiates the internal erasing process. This two-step
sequence of setup followed by execution ensures that memory contents are not accidentally erased due to external noise conditions.
At the rising edge of WE after the erase confirm command input, the internal write controller handles erase, erase-verify and pulse
repetition where required. If an erase operation error is detected, the internal verify is halted and erase operation is terminated. When
the erase operation is completed, the Write Status Bit(I/O
Figure 8 details the sequence.
KM29W32000TS
Figure 8. Block Erase Operation
R/B
I/O
ERASE SUSPEND/ERASE RESUME
R/B
I/O
Figure 9. Erase Suspend & Erase Resume Operation
0
0
~
~
7
7
60H
60H
Block Address input
Block Add. : A
Address Input(2Cycle)
13
Erase Function
Start
9
to A
~ A
21
21
D0H
is valid while A
D0H
0
) may be checked.
Erase Function
Suspend
9
to A
21
B0H
t
BERS
12
is ignored. The addresses of the block to be erased to FFH.
70H
FLASH MEMORY
Erase Function
Resume
D0H
I/O
Fail
0
Pass