参数资料
型号: W25Q16BVSSIG
厂商: Winbond Electronics
文件页数: 52/68页
文件大小: 0K
描述: IC SPI FLASH 16MBIT 8SOIC
标准包装: 90
系列: SpiFlash®
格式 - 存储器: 闪存
存储器类型: FLASH
存储容量: 16M(2M x 8)
速度: 104MHz
接口: SPI 串行
电源电压: 2.7 V ~ 3.6 V
工作温度: -40°C ~ 85°C
封装/外壳: 8-SOIC(0.209",5.30mm 宽)
供应商设备封装: 8-SOIC
包装: 管件
W25Q16BV
11.2.32 Continuous Read Mode Reset (FFh or FFFFh)
For Fast Read Dual/Quad I/O operations, “Continuous Read Mode” Bits (M7-0) are implemented to
further reduce instruction overhead. By setting the (M7-0) to “Ax” hex, the next Fast Read Dual/Quad I/O
operation does not require the BBh/EBh/E7h/E3h instruction code (See 11.2.13 - 11.2.16 for detail
descriptions).
If the system controller is Reset during operation it will likely send a standard SPI instruction, such
as Read ID (9Fh) or Fast Read (0Bh), to the W25Q16BV. However, as with most SPI Serial Flash
memories, the W25Q16BV does not have a hardware Reset pin, so if Continuous Read Mode bits are set
to “Ax” hex, the W25Q16BV will not recognize any standard SPI instructions. To address this possibility, it
is recommended to issue a Continuous Read Mode Reset instruction as the first instruction after a
system Reset. Doing so will release the Continuous Read Mode from the “Ax” hex state and allow
Standard SPI instructions to be recognized. The Continuous Read Mode Reset instruction is shown in
figure 31.
/CS
Mode Bit Reset
for Quad I/O
Mode Bit Reset
for Dual I/O
Mode 3
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Mode 3
CLK
IO 0
IO 1
IO 2
IO 3
Mode 0
FFh
Don’t Care
Don’t Care
Don’t Care
FFh
Mode 0
Figure 31. Continuous Read Mode Reset for Fast Read Dual/Quad I/O
To reset “Continuous Read Mode” during Quad I/O operation, only eight clocks are needed. The
instruction is “FFh”. To reset “Continuous Read Mode” during Dual I/O operation, sixteen clocks are
needed to shift in instruction “FFFFh”.
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