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N25Q032A13EF840E 数据表(PDF) 44 Page - Micron Technology

部件名 N25Q032A13EF840E
功能描述  32-Mbit 3 V, multiple I/O, 4-Kbyte subsector erase, XiP enabled, serial flash memory with 108 MHz SPI bus interface
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制造商  MICRON [Micron Technology]
网页  http://www.micron.com
标志 MICRON - Micron Technology

N25Q032A13EF840E 数据表(HTML) 44 Page - Micron Technology

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Volatile and Non Volatile Registers
N25Q032 - 3 V
44/153
Micron Technology, Inc., reserves the right to change products or specifications without notice.
©2010 Micron Technology, Inc. All rights reserved.
The Program Status bit is related to the following program operations in the DIO-SPI and
QIO-SPI protocols: Dual and Quad Command Page program and OTP program.
Once the bit is set High, it can only be reset Low (FSR<4>=0) by a Clear Flag Status
Register command (CLFSR). If set High it should be reset before a new Program command
is issued, otherwise the new command will appear to fail.
6.5.5
VPP Status bit
The bit 3 of the Flag Status Register represents the VPP Status bit. It indicates an invalid
voltage on the VPP pin during Program and Erase operations. The VPP pin is sampled at
the beginning of a Program or Erase operation.
If VPP becomes invalid during an operation, that is the voltage on VPP pin is below the
VPPH Voltage (9V), the VPP Status bit goes High (FSR<3>=1) and indeterminate results
can occur.
Once set High, the VPP Status bit can only be reset Low (FSR<3>=0) by a Clear Flag Status
Register command (CLFSR). If set High it should be reset before a new Program or Erase
command is issued; otherwise, the new command will appear to fail.
6.5.6
Program Suspend Status bit
The bit 2 of the Flag Status register represents the Program Suspend Status bit. It indicates
that a Program operation has been suspended or is going to be suspended.
The bit is set (FSR<2>=1) within the Program Suspend Latency time; that is, as soon as the
Program/Erase Suspend command (PES) has been issued. Therefore the device may still
complete the operation before entering the Suspend Mode.
The Program Suspend Status should be considered valid when the P/E Controller bit is high
(FSR<7>=1).
When a Program/Erase Resume command (PER) is issued the Program Suspend Status bit
returns Low (FSR<2>=0)
6.5.7
Protection Status bit
The bit 1 of the Flag Status Register represents the Protection Status bit. It indicates that an
Erase or Program operation has tried to modify the contents of a protected array sector, or
that a modify operation has tried to access to a locked OTP space. The Protection Status bit
is related to all possible protection violations as follows:
n
The sector is protected by Software Protection Mode 1 (SPM1) Lock registers,
n
The sector is protected by Software Protection Mode 2 (SPM2) Block Protect Bits
(standard SPI Status Register),
n
An attempt to program OTP when locked,
n
A Write Status Register command (WRSR) on STD SPI Status Register when locked by
the SRWD bit in conjunction with the Write Protect (W/VPP) signal (Hardware Protection
Mode).
Once set High, the Protection Status bit can only be reset Low (FSR<1>=0) by a Clear Flag
Status Register command (CLFSR). If set High it should be reset before a new command is
issued, otherwise the new command will appear to fail.


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