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參數(shù)資料
| 型號： | W25Q64BVSSIG |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | PROM |
| 英文描述： | 8M X 8 SPI BUS SERIAL EEPROM, PDSO8 |
| 封裝： | 0.208 INCH, GREEN, PLASTIC, SOIC-8 |
| 文件頁數(shù)： | 42/61頁 |
| 文件大?。?/td> | 1726K |
| 代理商： | W25Q64BVSSIG |
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W25Q64BV
Publication Release Date: July 08, 2010
- 47 -
Revision E
11.2.29 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 instruction code (See 11.2.12 Fast Read Dual I/O and 11.2.13
Fast Read Quad I/O 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 W25Q64BV. However, as with most SPI Serial Flash
memories, the W25Q64BV does not have a hardware Reset pin, so if Continuous Read Mode bits are set
to “Ax” hex, the W25Q64BV 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 30.
/CS
Mode Bit Reset
for Dual I/O
Mode 3
Mode 0
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Mode 3
Mode 0
Mode Bit Reset
for Quad I/O
FFh
Don’t Care
CLK
IO
0
IO
1
IO
2
/CS
Mode Bit Reset
for Dual I/O
Mode 3
Mode 0
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Mode 3
Mode 0
Mode Bit Reset
for Quad I/O
FFh
Don’t Care
IO
3
Don’t Care
IO
3
CLK
IO
0
IO
1
IO
2
Figure 30. 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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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| W25Q64BVSSIGTR | 制造商:Winbond Electronics Corp 功能描述:SPIFLASH, 64M-BIT, 4KB UNIFORM |
| W25Q64BVSSIP | 制造商:WINBOND 制造商全稱:Winbond 功能描述:64M-BIT SERIAL FLASH MEMORY WITH DUAL AND QUAD SPI |
| W25Q64BVZEIG | 功能描述:IC SPI FLASH 64MBIT 8WSON RoHS:是 類別:集成電路 (IC) >> 存儲(chǔ)器 系列:SpiFlash® 標(biāo)準(zhǔn)包裝:1,000 系列:- 格式 - 存儲(chǔ)器:EEPROMs - 串行 存儲(chǔ)器類型:EEPROM 存儲(chǔ)容量:4K (512 x 8) 速度:400kHz 接口:I²C，2 線串口 電源電壓:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 封裝/外殼:8-SOIC（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:8-MFP 包裝:帶卷 (TR) |
| W25Q64BVZEIP | 制造商:WINBOND 制造商全稱:Winbond 功能描述:64M-BIT SERIAL FLASH MEMORY WITH DUAL AND QUAD SPI |
| W25Q64CV | 制造商:WINBOND 制造商全稱:Winbond 功能描述:3V 64M-BIT SERIAL FLASH MEMORY WITH DUAL AND QUAD SPI |
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