NP8P128A13B1760E Micron Technology Inc, NP8P128A13B1760E Datasheet - Page 47
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NP8P128A13B1760E
Manufacturer Part Number
NP8P128A13B1760E
Description
Manufacturer
Micron Technology Inc
Datasheet
1.NP8P128A13B1760E.pdf
(94 pages)
Specifications of NP8P128A13B1760E
Lead Free Status / Rohs Status
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Part Number:
NP8P128A13B1760E
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Numonyx® Omneo™ P8P Datasheet
12.4.4
Table 21: Status register format
12.4.4.1
12.4.4.2
12.4.4.3
August 2010
316144-07
Status register write protect
SRWD
b7
Read status register (RDSR)
The read status register (RDSR) instruction allows the status register to be read. The
status register may be read at any time, even while a program, erase, write status
register is in progress. When one of these cycles is in progress, it is recommended to
check the write in progress (WIP) bit before sending a new instruction to the device. It
is also possible to read the status register continuously, as shown in
page 49
RDSR is the only instruction accepted by the device while a program, erase, write
status register operation is in progress.
The status and control bits of the status register are as follows:
WIP bit
The write in progress (WIP) bit indicates whether the memory is busy with a write
status register, program, erase cycle. When set to ‘1’, such a cycle is in progress, when
reset to ‘0’ no such cycle is in progress.
While WIP is ‘1’, RDSR is the only instruction the device will accept; all other
instructions are ignored.
WEL bit
The write enable latch (WEL) bit indicates the status of the internal write enable latch.
When set to ‘1’ the internal write enable latch is set, when set to ‘0’ the internal write
enable latch is reset and no write status register, program, erase instruction is
accepted.
BP3, BP2, BP1, BP0 bits
The block protect (BP3, BP2, BP1, BP0) bits are non-volatile. They define the size of the
area to be software protected against program (or write) and erase instructions. These
bits are written with the write status register (WRSR) instruction. When one or more of
the block protect (BP3, BP2, BP1, BP0) bits is set to ‘1’, the relevant memory area (as
defined in Table 1) becomes protected against page program (PP), dual input fast
program (DIFP), quad input fast program (QIFP), and sector erase (SE) instructions.
The block protect (BP3, BP2, BP1, BP0) bits can be written provided that the hardware
protected mode has not been set.The bulk erase (BE) instruction is executed if, and
only if, all block protect (BP3, BP2, BP1, BP0) bits are 0.
BP3
RFU
TB
BP2
RFU
BP1
BP0
Write enable latch bit
WEL
Write in progress bit
Figure 12 on
WIP
b0
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