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参数资料
| 型号： | W25Q80BLDAIG |
| 厂商： | WINBOND ELECTRONICS CORP |
| 元件分类： | PROM |
| 英文描述： | 8M X 1 SPI BUS SERIAL EEPROM, PDIP8 |
| 封装： | 0.300 INCH, GREEN, PLASTIC, DIP-8 |
| 文件页数： | 22/75页 |
| 文件大小： | 2267K |
| 代理商： | W25Q80BLDAIG |
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W25Q80BL
Publication Release Date: July 08, 2010
- 29 -
Preliminary - Revision C
9.2.14 Fast Read Dual I/O (BBh)
The Fast Read Dual I/O (BBh) instruction allows for improved random access while maintaining two IO
pins, IO0 and IO1. It is similar to the Fast Read Dual Output (3Bh) instruction but with the capability to
input the Address bits (A23-0) two bits per clock. This reduced instruction overhead may allow for code
execution (XIP) directly from the Dual SPI in some applications.
Fast Read Dual I/O with “Continuous Read Mode”
The Fast Read Dual I/O instruction can further reduce instruction overhead through setting the
“Continuous Read Mode” bits (M7-0) after the input Address bits (A23-0), as shown in figure 13a. The
upper nibble of the (M7-4) controls the length of the next Fast Read Dual I/O instruction through the
inclusion or exclusion of the first byte instruction code. The lower nibble bits of the (M3-0) are don’t care
(“x”). However, the IO pins should be high-impedance prior to the falling edge of the first data out clock.
If the “Continuous Read Mode” bits M5-4 = (1,0), then the next Fast Read Dual I/O instruction (after /CS
is raised and then lowered) does not require the BBh instruction code, as shown in figure 13b. This
reduces the instruction sequence by eight clocks and allows the Read address to be immediately entered
after /CS is asserted low. If the “Continuous Read Mode” bits M5-4 do not equal to (1,0), the next
instruction (after /CS is raised and then lowered) requires the first byte instruction code, thus returning to
normal operation. A “Continuous Read Mode” Reset instruction can also be used to reset (M7-0) before
issuing normal instructions (See 9.2.20 for detail descriptions).
Figure 13a. Fast Read Dual I/O Instruction Sequence (Initial instruction or previous M5-4
≠ 10)
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相关代理商/技术参数 |
参数描述 |
|---|---|
| W25Q80BLDAIP | 制造商:WINBOND 制造商全称:Winbond 功能描述:2.5V 8M-BIT SERIAL FLASH MEMORY WITH DUAL AND QUAD SPI |
| W25Q80BLSNIG | 制造商:Winbond Electronics Corp 功能描述:MEMORY IC |
| W25Q80BLSNIP | 制造商:WINBOND 制造商全称:Winbond 功能描述:2.5V 8M-BIT SERIAL FLASH MEMORY WITH DUAL AND QUAD SPI |
| W25Q80BLSSIG | 制造商:WINBOND 制造商全称:Winbond 功能描述:2.5V 8M-BIT SERIAL FLASH MEMORY WITH DUAL AND QUAD SPI |
| W25Q80BLSSIP | 制造商:WINBOND 制造商全称:Winbond 功能描述:2.5V 8M-BIT SERIAL FLASH MEMORY WITH DUAL AND QUAD SPI |
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