N25Q128A23BSFH0F 查看數據表（PDF） - Numonyx -> Micron

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N25Q128A23BSFH0F

128-Mbit 3 V, multiple I/O, 4-Kbyte subsector erase on boot sectors, XiP enabled, serial flash memory with 108 MHz SPI bus interface

Numonyx -> Micron 

Signal descriptions

N25Q128 - 3 V

2.6

Write protect/enhanced program supply voltage (W/VPP),

DQ2

W/VPP/DQ2 can be used as:

„ A protection control input.

„ A power supply pin.

„ I/O in Extended SPI protocol quad instructions and in QIO-SPI protocol instructions.

When the device is operated in Extended SPI protocol with single or dual instructions, the

two functions W or VPP are selected by the voltage range applied to the pin. If the W/VPP

input is kept in a low voltage range (0 V to VCC) the pin is seen as a control input. This input

signal is used to freeze the size of the area of memory that is protected against program or

erase instructions (as specified by the values in the BP[0:3] bits of the Status Register. (See

Table 2.: Status register format).

If VPP is in the range of VPPH, it acts as an additional power supply during the Program or

Erase cycles (See Table 28.: Operating conditions). In this case VPP must be stable until

the Program or Erase algorithm is completed.

During the Extended SPI protocol, the QOFR and QIOFR instructions, and the QIO-SPI

protocol instructions, the pin W/VPP/DQ2 is used as an input/output (DQ2 functionality).

Using the Extended SPI protocol the QIFP, QIEFP and the QIO-SPI Program/Erase

instructions, it is still possible to use the VPP additional power supply to speed up internal

operations. However, to enable this possibility it is necessary to set bit 3 of the Volatile

Enhanced Configuration Register to 0.

In this case the W/VPP/DQ2 pin is used as an I/O pin until the end of the instruction

sequence. After the last input data is shifted in, the application should apply VPP voltage to

W/VPP/DQ2 within 200 ms to speed up the internal operations. If the VPP voltage is not

applied within 200 ms the Program/Erase operations start with standard speed.

The default value of the VECR bit 3 is 1, and the VPP functionality for Quad I/O modify

instruction is disabled.

2.7

VCC supply voltage

VCC is the supply voltage.

2.8

VSS ground

VSS is the reference for the VCC supply voltage.

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